CN107898717B - corn talcum powder for babies - Google Patents

corn talcum powder for babies Download PDF

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CN107898717B
CN107898717B CN201711043564.3A CN201711043564A CN107898717B CN 107898717 B CN107898717 B CN 107898717B CN 201711043564 A CN201711043564 A CN 201711043564A CN 107898717 B CN107898717 B CN 107898717B
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leaf
corn starch
powder
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filtrate
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CN107898717A (en
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魏雪
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Wendy bear (Shanghai) children's products Co., Ltd
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Bio Branch (shanghai) Biological Polytron Technologies Inc
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/96—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
    • A61K8/97—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/27—Zinc; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/34—Alcohols
    • A61K8/345—Alcohols containing more than one hydroxy group
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/732—Starch; Amylose; Amylopectin; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q15/00—Anti-perspirants or body deodorants
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    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00—Preparation of compounds containing saccharide radicals
    • C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00—Preparation of compounds containing saccharide radicals
    • C12P19/14—Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase

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Abstract

the invention discloses an infant corn talcum powder, which comprises the following raw materials: corn starch, magnesium stearate, zinc oxide, chamomile leaf and stem extract, water, glycerol, aloe vera leaf juice powder and hybrid lavender leaf and stem extract with wide and narrow leaves. The corn talcum powder for the infants disclosed by the invention is prepared from corn starch, avoids the damage of talcum powder to bodies, is mild and non-irritant due to the addition of the natural organic extract, is clean in color, good in dispersity, flowability and hydrophobicity, and capable of sterilizing, relieving itching and protecting the skins of the infants.

Description

corn talcum powder for babies
Technical Field
The invention belongs to the technical field of daily chemical products, and particularly relates to a corn talcum powder for infants.
Background
the toilet powder is a sanitary product for skin care of human body, is composed of powder matrix, sweat absorbent, perfume, etc., and has the functions of absorbing sweat, refreshing skin, making skin fragrant, etc. The talcum powder is a mineral substance related to asbestos, and the asbestos component can cause cancers, so that the talcum powder is not easy to decompose after entering a human body. It is therefore necessary to find suitable alternatives, eliminating the adverse effects.
The skin of the infant is only one tenth as thick as that of the adult, the epidermis is a monolayer of cells, and the adult is a multilayer of cells; the dermis has few collagen fibers, and thus lacks elasticity, and is easily penetrated and rubbed by foreign objects. The skin of the infant is tender and soft, and the sebum is thin. The adult skin care product is developed according to physiological characteristics of adult skin, and the added components are complex. Adult skin care products tend to cause a burden on the skin of babies, and may cause skin allergy of babies. Therefore, it is desirable to routinely select skin care products for infant care that are specifically designed for infants.
The baby skin care product is a care product which is specially developed for baby skin and is used for daily cleaning and protecting the skin of a baby. The skin of infants is delicate, and the infants are easy to develop miliaria or eczema due to overhigh temperature or sweating, especially in summer, most of the infants are easy to develop miliaria, and keeping the skin dry is an effective method for preventing and removing the miliaria, so that the safe and effective talcum powder for the infants is very necessary to be used in summer. Mothers generally desire a talcum powder that is generally effective and non-irritating, safe and effective. Most of the toilet powders on the market at present are not purely natural, most of the main components are talcum powders, most of the components also contain artificial chemicals, the safety of infants is continuously questioned, and some natural toilet powders are expensive, not easy to smear and flap, and poor in toilet effect.
Disclosure of Invention
In order to solve the technical problems, the corn powder for the baby corn toilet is prepared by adopting corn starch, so that the damage of talcum powder to a body is avoided, natural organic extracts are added, the corn toilet powder is mild and non-irritant, and the prepared corn toilet powder for the baby corn toilet powder is clean in color, good in dispersity, flowability and hydrophobicity, capable of sterilizing and relieving itching and capable of protecting the skin of the baby.
the invention provides an infant corn talcum powder which comprises the following raw materials in parts by weight: 70-90 parts of corn starch, 3-5 parts of magnesium stearate, 3-5 parts of zinc oxide, 3-5 parts of chamomile leaf and stem extract, 1-3 parts of water, 1-3 parts of glycerol, 1-3 parts of aloe barbadensis leaf juice powder and 1-3 parts of broadleaf and narrow-leaf hybrid lavender leaf and stem extract.
the corn starch is a mixture of 25-45wt% native corn starch and 55-75wt% modified corn starch.
the preparation method of the chamomile leaf and stem extract comprises the following steps:
(1) Pretreating leaves and stems of the mother chrysanthemum: collecting fresh leaves and stems of flos Matricariae Chamomillae, drying in a drying oven at 40-60 deg.C for 18-24 hr, and pulverizing into 60-100 mesh powder to obtain leaf and stem powder of flos Matricariae Chamomillae;
(2) extraction: adding water 8-12 times the weight of the leaf and stem powder of flos Matricariae Chamomillae into the leaf and stem powder of flos Matricariae Chamomillae, maintaining the temperature at 40-60 deg.C for 2-5 hr, filtering with 300 mesh filter cloth to obtain filtrate A, adding water 5-10 times the weight of the leaf and stem powder of flos Matricariae Chamomillae, maintaining the temperature at 40-60 deg.C for 1-3 hr, filtering with 300 mesh filter cloth to obtain filtrate B, mixing filtrate A and filtrate B to obtain filtrate C, and concentrating filtrate C at 40-60 deg.C under reduced pressure to relative density of 1.2-1.3(50 deg.C) to obtain the extract of leaf and stem of flos Matricariae.
The preparation method of the hybrid lavender flower-leaf-stem extract with wide and narrow leaves comprises the following steps:
(1) pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh hybrid Lavender leaves and stems with wide and narrow leaves, drying in a drying oven at 40-60 deg.C for 18-24 hr, and pulverizing into 60-100 mesh to obtain Lavender leaves and stems powder;
(2) extraction: adding water 8-12 times the mass of lavender flower and stem powder into lavender flower and stem powder, keeping the temperature at 40-60 ℃ for 2-5 hours, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water 5-10 times the mass of lavender flower and stem powder, keeping the temperature at 40-60 ℃ for 1-3 hours, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining the filtrate D and the filtrate E to obtain filtrate F, and concentrating the filtrate F at 40-60 ℃ under reduced pressure until the relative density is 1.2-1.3(50 ℃) to obtain the wide-narrow leaf hybrid lavender flower and stem extract.
The preparation method of the modified corn starch comprises the following steps:
(1) Ball milling;
(2) carrying out enzymolysis;
(3) and (4) performing hydrophobic modification.
The preparation method of the modified corn starch comprises the following steps:
(1) Ball milling;
(2) Carrying out enzymolysis;
(3) crosslinking;
(4) And (4) performing hydrophobic modification.
The preparation method of the modified corn starch comprises the following steps:
(1) Ball milling: mixing native corn starch and ethanol according to a solid-to-liquid ratio of 1 g: (2-3) mixing the raw materials in the volume of mL, stirring the mixture for 10-20 minutes at 60-100 revolutions per minute, putting the mixture into a ball milling tank for ball milling, wherein the ball milling time is 2-5 hours, the ball milling rotating speed is 400 revolutions per minute, centrifuging the ball milled product for 4-8 minutes at 4000 revolutions per minute and 6000 revolutions per minute after the ball milling is finished, and drying the solid for 4-6 hours at 65-85 ℃ to obtain the ultrafine starch;
(2) enzymolysis: mixing superfine starch and deionized water to prepare a solution with the mass fraction of 20-30%, adding alpha-amylase with the mass of 0.02-0.2% of that of the superfine starch, stirring at 65-75 ℃ for 8-12 minutes at 200 revolutions per minute, stirring at 95-105 ℃ for 2-5 minutes at 200 revolutions per minute at 100 revolutions per minute, performing suction filtration by adopting a nylon membrane with the diameter of 0.45 mu m, and drying the obtained solid at 65-85 ℃ for 4-6 hours under the vacuum degree of 0.04-0.06MPa to obtain enzyme modified corn starch;
(3) And (3) crosslinking: mixing enzyme modified corn starch with deionized water to prepare a solution with the mass fraction of 20-30%, adding a cross-linking agent with the mass fraction of 3-5% of that of the enzyme modified corn starch, adjusting the pH to 9.0-10.0 by using a sodium hydroxide aqueous solution with the mass fraction of 5-10%, stirring at 40-60 ℃ at 200 revolutions per minute for 3-5 hours, performing suction filtration by using a nylon membrane with the particle size of 0.45 mu m and the vacuum degree of 0.04-0.06MPa, washing the obtained solid with the deionized water until the eluate is neutral, and drying the solid at 65-85 ℃ for 4-6 hours to obtain the cross-linked corn starch;
(4) Hydrophobic modification: mixing the crosslinked corn starch and deionized water to prepare a solution with the mass fraction of 20-30%, stirring at the temperature of 35-50 ℃ at 200 revolutions per minute with 100 plus of sodium hydroxide aqueous solution with the mass fraction of 5-10% to adjust the pH value to 8.0-9.0, dripping a modifier with the mass fraction of 4-6% of the crosslinked corn starch at the speed of 1 drop/second, continuously stirring at the temperature of 35-50 ℃ at 200 revolutions per minute with 100 plus of sodium hydroxide aqueous solution for 5-8 hours after finishing dripping, adjusting the pH value to 6.5-7.0 with citric acid aqueous solution with the mass fraction of 5-10%, stirring at the temperature of 35-50 ℃ at 200 revolutions per minute with 100 plus of sodium hydroxide aqueous solution for 4-8 minutes, performing suction filtration by using a nylon membrane with the diameter of 0.45 mu m and the vacuum degree of 0.04-0.06MPa, alternately washing the obtained solid for 3-5 times by using ethanol aqueous solution with the volume fraction of 85-95% and deionized water, and drying the solid at 65-85 ℃ for 4-6 hours to obtain the modified corn starch, wherein the solid-to-liquid ratio of the cross-linked corn starch to an ethanol water solution with the volume fraction of 85-95% is 1 g: (5-10) mL, wherein the solid-to-liquid ratio of the cross-linked corn starch to the deionized water is 1 g: (5-10) mL.
the cross-linking agent is one of sodium hexametaphosphate and sodium trimetaphosphate.
The modifier is one or a mixture of more of glutaric anhydride, octenyl succinic anhydride, dodecenyl succinic anhydride and isopropyl distearoyl acyloxy aluminate.
preferably, the modifier is dodecenyl succinic anhydride.
more preferably, the modifier is dodecenyl succinic anhydride and/or isopropyl distearoyloxy aluminate, and further preferably, the modifier is a mixture of dodecenyl succinic anhydride and isopropyl distearoyloxy aluminate, wherein the mass ratio of dodecenyl succinic anhydride to isopropyl distearoyloxy aluminate is (3-5): 1.
the invention also provides a preparation method of the infant corn talcum powder, which comprises the following steps:
(1) Mixing water and glycerol, stirring at 40-60 deg.C at 60-100 rpm for 5-10 min, adding flos Matricariae Chamomillae leaf and stem extract and hybrid Lavender leaf and stem extract, and stirring at 40-60 deg.C at 60-100 rpm for 10-20 min to obtain mixed solution;
(2) Mixing corn starch, magnesium stearate, zinc oxide, and Kusora aloe juice powder, and stirring at 40-60 deg.C at 60-100 rpm for 10-20 min to obtain mixture;
(3) Spraying the mixed solution while stirring, and stirring for 20-30 minutes at 60-100 rpm at 40-60 ℃ after spraying to obtain mixed powder;
(4) And crushing the mixed powder into 100-mesh and 300-mesh powder, and drying the powder in a drying oven at the temperature of 40-60 ℃ for 4-8 hours to obtain the infant corn talcum powder.
The corn talcum powder for the infants disclosed by the invention is prepared from corn starch, avoids the damage of talcum powder to bodies, is mild and non-irritant due to the addition of the natural organic extract, is clean in color, good in dispersity, flowability and hydrophobicity, and capable of sterilizing, relieving itching and protecting the skins of the infants.
Detailed Description
The invention is further illustrated below with reference to specific examples. It is to be understood, however, that these examples are illustrative only and are not to be construed as limiting the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the manufacturer.
the native corn starch is edible corn starch of Chinese food brand.
α -amylase, CAS No.: 9000-90-2, produced by Shanghai Aladdin Biotechnology Ltd, and the enzyme activity is 50 ten thousand U/g.
Aloe BARBADENSIS (Aloe BARBADENSIS), also known as Aloe vera, Aloe BARBADENSIS or Aloe americana, contains ALOE polysaccharides and vitamins that have good nourishing, moisturizing and whitening effects on human skin. It has low irritation, is comfortable after use, and has therapeutic effect on pachylosis, facial wrinkle, scar, freckle, acne, etc. The embodiment of the invention adopts the aloe barbadensis leaf juice powder, and is provided by an agricultural ecological garden of a mother Xiangzhen wax gourd tree in Zhengxian county.
Flos Matricariae Chamomillae (Chamomilla RECUTITA), also called Chamomilla RECUTITA, has antiallergic, antioxidant, antipruritic, moisturizing, tranquilizing, etc. functions, is especially suitable for dry and allergic skin, and also has the functions of clearing away heat and toxic materials, removing blood stasis and swelling, sterilizing and diminishing inflammation, relieving itching and removing dandruff, mildly supplementing water and relieving skin. In the embodiment of the invention, the chamomile, the stem and the leaf are picked from an agricultural ecological garden of a mother Xiangzhen wax gourd tree in Zhengxiong county.
Lavender (Lavandula INTERMEDIA) belonging to Labiatae of Labiatae. Lavender has the reputation of 'aromatic herbs', is suitable for any skin, promotes cell regeneration, accelerates wound healing, improves acne, abscess and eczema, balances sebum secretion, has a peculiar effect on burns, scalds and sunburns, can inhibit bacteria, reduce scars, relieve pressure, relax nerves, help sleep and relieve stress and anxiety. In the embodiment of the invention, the leaves and stems of the fresh wide-narrow leaf hybrid lavender are picked from special product development professional cooperative society of Jiang Xinjiang in Hocheng county.
Magnesium stearate, CAS No.: 557-04-0.
zinc oxide, CAS No.: 1314-13-2.
Glycerol, CAS number: 56-81-5.
Ethanol, CAS No.: 64-17-5.
sodium hexametaphosphate, CAS number: 10124-56-8.
Sodium hydroxide, CAS No.: 1310-73-2.
citric acid, CAS No.: 77-92-9.
glutaric anhydride, CAS number: 108-55-4.
octenyl succinic anhydride, CAS No.: 26680-54-6.
Dodecenyl succinic anhydride, CAS No.: 25377-73-5.
isopropyl distearoyloxyaluminate, CAS No.: 5919-73-3.
the nylon filter membrane is produced by Zhengxing special filter equipment manufacturing company Limited in Haining, and has a pore diameter of 0.45 μm.
the ball mill is a QM-3SP2 planetary ball mill manufactured by Nanjing university instruments factory.
And (3) activation index determination: weighing 5g of infant corn talcum powder, placing the powder in a beaker with 100mL of distilled water, stirring for 5min by using a glass rod, standing for 1h, clearing, scraping the upper floating powder, filtering the powder material which is deposited at the bottom of the beaker, drying and weighing.
the activation index was calculated according to the following formula:
h is activation index,%; m0 is the total mass of the sample, g; m1 is the settled sample mass, g.
angle of repose measurement: a fixed funnel method is adopted. A fixed amount of baby corn talcum powder was weighed and placed in a fixed funnel so that the sample slowly flowed out of the funnel and appeared as a cone. The height h and diameter d of the cone were measured. The angle of repose α is calculated according to the following equation:
α＝arctan(2h/d)
Alpha is the sample angle of repose, °; h is the starch pile height, cm; d is the diameter of the starch pile, cm.
example 1
The infant corn talcum powder comprises the following raw materials in parts by weight: 80 parts of corn starch, 4 parts of magnesium stearate, 4 parts of zinc oxide, 4 parts of chamomile leaf and stem extract, 2 parts of water, 2 parts of glycerol, 2 parts of aloe barbadensis leaf juice powder and 2 parts of wide and narrow leaf hybrid lavender leaf and stem extract.
The corn starch is a mixture of 35 wt% native corn starch and 65 wt% modified corn starch.
The preparation method of the chamomile leaf and stem extract comprises the following steps:
(1) pretreating leaves and stems of the mother chrysanthemum: collecting fresh mother chrysanthemum leaf and stem, drying in a drying oven at 50 ℃ for 22 hours, and crushing into 80 meshes to obtain mother chrysanthemum leaf and stem powder;
(2) Extraction: adding water 10 times the weight of the leaf and stem powder of the mother chrysanthemum into the leaf and stem powder of the mother chrysanthemum, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate A, adding water 8 times the weight of the leaf and stem powder of the mother chrysanthemum, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate B, combining the filtrate A and the filtrate B to obtain filtrate C, and concentrating the filtrate C under reduced pressure at 50 ℃ under the vacuum degree of 0.08MPa to the relative density of 1.25(50 ℃) to obtain the leaf and stem extract of the mother chrysanthemum.
the preparation method of the hybrid lavender flower-leaf-stem extract with wide and narrow leaves comprises the following steps:
(1) Pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh wide and narrow leaf hybrid lavender flower and leaf stems, placing in a 50 ℃ drying oven for drying for 22 hours, and crushing into 80 meshes to obtain lavender flower and leaf stem powder;
(2) extraction: adding water which is 10 times of the mass of the lavender flower and leaf powder into the lavender flower and leaf powder, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water which is 8 times of the mass of the lavender flower and leaf powder, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining the filtrate D and the filtrate E to obtain filtrate F, and concentrating the filtrate F under the reduced pressure at the vacuum degree of 0.08MPa and the temperature of 50 ℃ until the relative density is 1.25(50 ℃) to obtain the wide-narrow leaf hybrid lavender flower and leaf and stem extract.
the preparation method of the modified corn starch comprises the following steps:
(1) ball milling: mixing native corn starch and ethanol according to a solid-to-liquid ratio of 1 g: 1.5mL of the mixture is mixed, stirred for 15 minutes at 80 rpm and then put into a ball milling tank for ball milling, the ball milling time is 3 hours, the ball milling rotation speed is 500 rpm, a ball milling product is centrifuged for 6 minutes at 5000 rpm after the ball milling is finished, and the solid is dried for 5 hours at 75 ℃ to obtain superfine starch;
(2) Enzymolysis: mixing superfine starch and deionized water to prepare a solution with the mass fraction of 25%, adding alpha-amylase with the mass of 0.08% of that of the superfine starch, stirring at the temperature of 70 ℃ for 10 minutes at 150 rpm, stirring at the temperature of 100 ℃ for 3 minutes at 150 rpm, performing suction filtration by adopting a nylon membrane with the diameter of 0.45 mu m, and drying the obtained solid at the temperature of 75 ℃ for 5 hours under the vacuum degree of 0.05MPa to obtain enzyme modified corn starch;
(3) hydrophobic modification: mixing enzyme modified corn starch and deionized water to prepare a solution with the mass fraction of 25 percent, stirring at 150 r/min at 42 deg.C, adjusting pH to 8.5 with 8% sodium hydroxide aqueous solution, adding 5% modifier at 1 drop/s, stirring at 150 r/min at 42 deg.C for 6 hr, adjusting pH to 6.8 with 8% citric acid aqueous solution, stirring at 42 deg.C at 150 rpm for 6 min, vacuum filtering with 0.45 μm nylon membrane under 0.05MPa, washing the obtained solid with 90% ethanol water solution and deionized water for 4 times, drying the solid at 75 deg.C for 5 hr to obtain modified corn starch, wherein the solid-to-liquid ratio of the enzyme modified corn starch to the ethanol aqueous solution with the volume fraction of 90 percent is 1 g: 8mL, and the solid-to-liquid ratio of the enzyme modified corn starch to the deionized water is 1 g: 8 mL.
The modifier is octenyl succinic anhydride.
the preparation method of the infant corn talcum powder comprises the following steps:
(1) Mixing water and glycerol, stirring at 50 deg.C at 80 rpm for 8 min, adding flos Matricariae Chamomillae leaf and stem extract of hybrid Lavender leaf and stem extract, and stirring at 50 deg.C at 80 rpm for 15 min to obtain mixed solution;
(2) mixing corn starch, magnesium stearate, zinc oxide and Kusora aloe juice powder, and stirring at 50 deg.C at 80 rpm for 15 minutes to obtain mixture;
(3) Spraying the mixed solution while stirring the mixed solution at 80 revolutions per minute, and stirring the mixed solution at 80 revolutions per minute for 25 minutes at 50 ℃ after the spraying is finished to obtain mixed powder;
(4) and crushing the mixed powder into 200 meshes, and drying in a drying oven at 50 ℃ for 6 hours to obtain the infant corn talcum powder.
Example 2
The infant corn talcum powder comprises the following raw materials in parts by weight: 80 parts of corn starch, 4 parts of magnesium stearate, 4 parts of zinc oxide, 4 parts of chamomile leaf and stem extract, 2 parts of water, 2 parts of glycerol, 2 parts of aloe barbadensis leaf juice powder and 2 parts of wide and narrow leaf hybrid lavender leaf and stem extract.
The corn starch is a mixture of 35 wt% native corn starch and 65 wt% modified corn starch.
the preparation method of the chamomile leaf and stem extract comprises the following steps:
(1) Pretreating leaves and stems of the mother chrysanthemum: collecting fresh mother chrysanthemum leaf and stem, drying in a drying oven at 50 ℃ for 22 hours, and crushing into 80 meshes to obtain mother chrysanthemum leaf and stem powder;
(2) Extraction: adding water 10 times the weight of the leaf and stem powder of the mother chrysanthemum into the leaf and stem powder of the mother chrysanthemum, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate A, adding water 8 times the weight of the leaf and stem powder of the mother chrysanthemum, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate B, combining the filtrate A and the filtrate B to obtain filtrate C, and concentrating the filtrate C under reduced pressure at 50 ℃ under the vacuum degree of 0.08MPa to the relative density of 1.25(50 ℃) to obtain the leaf and stem extract of the mother chrysanthemum.
The preparation method of the hybrid lavender flower-leaf-stem extract with wide and narrow leaves comprises the following steps:
(1) pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh wide and narrow leaf hybrid lavender flower and leaf stems, placing in a 50 ℃ drying oven for drying for 22 hours, and crushing into 80 meshes to obtain lavender flower and leaf stem powder;
(2) extraction: adding water which is 10 times of the mass of the lavender flower and leaf powder into the lavender flower and leaf powder, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water which is 8 times of the mass of the lavender flower and leaf powder, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining the filtrate D and the filtrate E to obtain filtrate F, and concentrating the filtrate F under the reduced pressure at the vacuum degree of 0.08MPa and the temperature of 50 ℃ until the relative density is 1.25(50 ℃) to obtain the wide-narrow leaf hybrid lavender flower and leaf and stem extract.
The preparation method of the modified corn starch comprises the following steps:
(1) Ball milling: mixing native corn starch and ethanol according to a solid-to-liquid ratio of 1 g: 1.5mL of the mixture is mixed, stirred for 15 minutes at 80 rpm and then put into a ball milling tank for ball milling, the ball milling time is 3 hours, the ball milling rotation speed is 500 rpm, a ball milling product is centrifuged for 6 minutes at 5000 rpm after the ball milling is finished, and the solid is dried for 5 hours at 75 ℃ to obtain superfine starch;
(2) enzymolysis: mixing superfine starch and deionized water to prepare a solution with the mass fraction of 25%, adding alpha-amylase with the mass of 0.08% of that of the superfine starch, stirring at the temperature of 70 ℃ for 10 minutes at 150 rpm, stirring at the temperature of 100 ℃ for 3 minutes at 150 rpm, performing suction filtration by adopting a nylon membrane with the diameter of 0.45 mu m, and drying the obtained solid at the temperature of 75 ℃ for 5 hours under the vacuum degree of 0.05MPa to obtain enzyme modified corn starch;
(3) And (3) crosslinking: mixing enzyme modified corn starch with deionized water to prepare a solution with the mass fraction of 25%, adding a cross-linking agent with the mass fraction of 4% of the enzyme modified corn starch, adjusting the pH to 9.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, stirring at 150 rpm for 4 hours at 50 ℃, performing suction filtration by using a nylon membrane with the diameter of 0.45 mu m, and performing vacuum filtration at the vacuum degree of 0.05MPa, washing the obtained solid with the deionized water until the eluate is neutral, and drying the solid for 5 hours at the temperature of 75 ℃ to obtain the cross-linked corn starch;
(4) Hydrophobic modification: mixing crosslinked corn starch and deionized water to prepare a solution with the mass fraction of 25%, stirring at 42 ℃ at 150 revolutions per minute, adjusting the pH to 8.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, dropwise adding a modifier with the mass fraction of 5% of the crosslinked corn starch at the speed of 1 drop per second, continuously stirring at 42 ℃ at 150 revolutions per minute for 6 hours after dropwise adding, adjusting the pH to 6.8 by using a citric acid aqueous solution with the mass fraction of 8%, stirring at 42 ℃ at 150 revolutions per minute for 6 minutes, performing suction filtration by using a 0.45-micron nylon membrane, performing vacuum degree of 0.05MPa, alternately washing the obtained solid for 4 times by using an ethanol aqueous solution with the volume fraction of 90% and deionized water, and drying the solid at 75 ℃ for 5 hours to obtain the modified corn starch, wherein the solid-liquid ratio of the crosslinked corn starch to the ethanol aqueous solution with the volume fraction of 90% is 1 g: 8mL, and the solid-to-liquid ratio of the cross-linked corn starch to the deionized water is 1 g: 8 mL.
The cross-linking agent is sodium hexametaphosphate.
The modifier is octenyl succinic anhydride.
The preparation method of the infant corn talcum powder comprises the following steps:
(1) mixing water and glycerol, stirring at 50 deg.C at 80 rpm for 8 min, adding flos Matricariae Chamomillae leaf and stem extract of hybrid Lavender leaf and stem extract, and stirring at 50 deg.C at 80 rpm for 15 min to obtain mixed solution;
(2) Mixing corn starch, magnesium stearate, zinc oxide and Kusora aloe juice powder, and stirring at 50 deg.C at 80 rpm for 15 minutes to obtain mixture;
(3) spraying the mixed solution while stirring the mixed solution at 80 revolutions per minute, and stirring the mixed solution at 80 revolutions per minute for 25 minutes at 50 ℃ after the spraying is finished to obtain mixed powder;
(4) And crushing the mixed powder into 200 meshes, and drying in a drying oven at 50 ℃ for 6 hours to obtain the infant corn talcum powder.
Example 3
The infant corn talcum powder comprises the following raw materials in parts by weight: 80 parts of corn starch, 4 parts of magnesium stearate, 4 parts of zinc oxide, 4 parts of chamomile leaf and stem extract, 2 parts of water, 2 parts of glycerol, 2 parts of aloe barbadensis leaf juice powder and 2 parts of wide and narrow leaf hybrid lavender leaf and stem extract.
the corn starch is a mixture of 35 wt% native corn starch and 65 wt% modified corn starch.
The preparation method of the chamomile leaf and stem extract comprises the following steps:
(1) pretreating leaves and stems of the mother chrysanthemum: collecting fresh mother chrysanthemum leaf and stem, drying in a drying oven at 50 ℃ for 22 hours, and crushing into 80 meshes to obtain mother chrysanthemum leaf and stem powder;
(2) Extraction: adding water 10 times the weight of the leaf and stem powder of the mother chrysanthemum into the leaf and stem powder of the mother chrysanthemum, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate A, adding water 8 times the weight of the leaf and stem powder of the mother chrysanthemum, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate B, combining the filtrate A and the filtrate B to obtain filtrate C, and concentrating the filtrate C under reduced pressure at 50 ℃ under the vacuum degree of 0.08MPa to the relative density of 1.25(50 ℃) to obtain the leaf and stem extract of the mother chrysanthemum.
the preparation method of the hybrid lavender flower-leaf-stem extract with wide and narrow leaves comprises the following steps:
(1) pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh wide and narrow leaf hybrid lavender flower and leaf stems, placing in a 50 ℃ drying oven for drying for 22 hours, and crushing into 80 meshes to obtain lavender flower and leaf stem powder;
(2) Extraction: adding water which is 10 times of the mass of the lavender flower and leaf powder into the lavender flower and leaf powder, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water which is 8 times of the mass of the lavender flower and leaf powder, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining the filtrate D and the filtrate E to obtain filtrate F, and concentrating the filtrate F under the reduced pressure at the vacuum degree of 0.08MPa and the temperature of 50 ℃ until the relative density is 1.25(50 ℃) to obtain the wide-narrow leaf hybrid lavender flower and leaf and stem extract.
the preparation method of the modified corn starch comprises the following steps:
(1) Enzymolysis: mixing corn native starch and deionized water to prepare a solution with the mass fraction of 25%, adding alpha-amylase with the mass of 0.08% of that of the corn native starch, stirring at the temperature of 70 ℃ for 10 minutes at 150 rpm, stirring at the temperature of 100 ℃ for 3 minutes at 150 rpm, performing suction filtration by using a 0.45-micron nylon membrane, and drying the obtained solid at the temperature of 75 ℃ for 5 hours under the vacuum degree of 0.05MPa to obtain enzyme modified corn starch;
(2) And (3) crosslinking: mixing enzyme modified corn starch with deionized water to prepare a solution with the mass fraction of 25%, adding a cross-linking agent with the mass fraction of 4% of the enzyme modified corn starch, adjusting the pH to 9.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, stirring at 150 rpm for 4 hours at 50 ℃, performing suction filtration by using a nylon membrane with the diameter of 0.45 mu m, and performing vacuum filtration at the vacuum degree of 0.05MPa, washing the obtained solid with the deionized water until the eluate is neutral, and drying the solid for 5 hours at the temperature of 75 ℃ to obtain the cross-linked corn starch;
(3) Hydrophobic modification: mixing crosslinked corn starch and deionized water to prepare a solution with the mass fraction of 25%, stirring at 42 ℃ at 150 revolutions per minute, adjusting the pH to 8.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, dropwise adding a modifier with the mass fraction of 5% of the crosslinked corn starch at the speed of 1 drop per second, continuously stirring at 42 ℃ at 150 revolutions per minute for 6 hours after dropwise adding, adjusting the pH to 6.8 by using a citric acid aqueous solution with the mass fraction of 8%, stirring at 42 ℃ at 150 revolutions per minute for 6 minutes, performing suction filtration by using a 0.45-micron nylon membrane, performing vacuum degree of 0.05MPa, alternately washing the obtained solid for 4 times by using an ethanol aqueous solution with the volume fraction of 90% and deionized water, and drying the solid at 75 ℃ for 5 hours to obtain the modified corn starch, wherein the solid-liquid ratio of the crosslinked corn starch to the ethanol aqueous solution with the volume fraction of 90% is 1 g: 8mL, and the solid-to-liquid ratio of the cross-linked corn starch to the deionized water is 1 g: 8 mL.
The cross-linking agent is sodium hexametaphosphate.
the modifier is octenyl succinic anhydride.
the preparation method of the infant corn talcum powder comprises the following steps:
(1) Mixing water and glycerol, stirring at 50 deg.C at 80 rpm for 8 min, adding flos Matricariae Chamomillae leaf and stem extract of hybrid Lavender leaf and stem extract, and stirring at 50 deg.C at 80 rpm for 15 min to obtain mixed solution;
(2) Mixing corn starch, magnesium stearate, zinc oxide and Kusora aloe juice powder, and stirring at 50 deg.C at 80 rpm for 15 minutes to obtain mixture;
(3) Spraying the mixed solution while stirring the mixed solution at 80 revolutions per minute, and stirring the mixed solution at 80 revolutions per minute for 25 minutes at 50 ℃ after the spraying is finished to obtain mixed powder;
(4) and crushing the mixed powder into 200 meshes, and drying in a drying oven at 50 ℃ for 6 hours to obtain the infant corn talcum powder.
example 4
The infant corn talcum powder comprises the following raw materials in parts by weight: 80 parts of corn starch, 4 parts of magnesium stearate, 4 parts of zinc oxide, 4 parts of chamomile leaf and stem extract, 2 parts of water, 2 parts of glycerol, 2 parts of aloe barbadensis leaf juice powder and 2 parts of wide and narrow leaf hybrid lavender leaf and stem extract.
the corn starch is a mixture of 35 wt% native corn starch and 65 wt% modified corn starch.
the preparation method of the chamomile leaf and stem extract comprises the following steps:
(1) Pretreating leaves and stems of the mother chrysanthemum: collecting fresh mother chrysanthemum leaf and stem, drying in a drying oven at 50 ℃ for 22 hours, and crushing into 80 meshes to obtain mother chrysanthemum leaf and stem powder;
(2) extraction: adding water 10 times the weight of the leaf and stem powder of the mother chrysanthemum into the leaf and stem powder of the mother chrysanthemum, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate A, adding water 8 times the weight of the leaf and stem powder of the mother chrysanthemum, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate B, combining the filtrate A and the filtrate B to obtain filtrate C, and concentrating the filtrate C under reduced pressure at 50 ℃ under the vacuum degree of 0.08MPa to the relative density of 1.25(50 ℃) to obtain the leaf and stem extract of the mother chrysanthemum.
The preparation method of the hybrid lavender flower-leaf-stem extract with wide and narrow leaves comprises the following steps:
(1) pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh wide and narrow leaf hybrid lavender flower and leaf stems, placing in a 50 ℃ drying oven for drying for 22 hours, and crushing into 80 meshes to obtain lavender flower and leaf stem powder;
(2) Extraction: adding water which is 10 times of the mass of the lavender flower and leaf powder into the lavender flower and leaf powder, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water which is 8 times of the mass of the lavender flower and leaf powder, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining the filtrate D and the filtrate E to obtain filtrate F, and concentrating the filtrate F under the reduced pressure at the vacuum degree of 0.08MPa and the temperature of 50 ℃ until the relative density is 1.25(50 ℃) to obtain the wide-narrow leaf hybrid lavender flower and leaf and stem extract.
The preparation method of the modified corn starch comprises the following steps:
(1) Ball milling: mixing native corn starch and ethanol according to a solid-to-liquid ratio of 1 g: 1.5mL of the mixture is mixed, stirred for 15 minutes at 80 rpm and then put into a ball milling tank for ball milling, the ball milling time is 3 hours, the ball milling rotation speed is 500 rpm, a ball milling product is centrifuged for 6 minutes at 5000 rpm after the ball milling is finished, and the solid is dried for 5 hours at 75 ℃ to obtain superfine starch;
(2) and (3) crosslinking: mixing superfine starch and deionized water to prepare a solution with the mass fraction of 25%, adding a cross-linking agent with the mass fraction of 4% of the superfine starch, adjusting the pH to 9.5 by using an aqueous solution of sodium hydroxide with the mass fraction of 8%, stirring at the temperature of 50 ℃ at 150 rpm for 4 hours, performing suction filtration by using a nylon membrane with the thickness of 0.45 mu m and the vacuum degree of 0.05MPa, washing the obtained solid with the deionized water until the eluate is neutral, and drying the solid at the temperature of 75 ℃ for 5 hours to obtain the cross-linked corn starch;
(3) hydrophobic modification: mixing crosslinked corn starch and deionized water to prepare a solution with the mass fraction of 25%, stirring at 42 ℃ at 150 revolutions per minute, adjusting the pH to 8.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, dropwise adding a modifier with the mass fraction of 5% of the crosslinked corn starch at the speed of 1 drop per second, continuously stirring at 42 ℃ at 150 revolutions per minute for 6 hours after dropwise adding, adjusting the pH to 6.8 by using a citric acid aqueous solution with the mass fraction of 8%, stirring at 42 ℃ at 150 revolutions per minute for 6 minutes, performing suction filtration by using a 0.45-micron nylon membrane, performing vacuum degree of 0.05MPa, alternately washing the obtained solid for 4 times by using an ethanol aqueous solution with the volume fraction of 90% and deionized water, and drying the solid at 75 ℃ for 5 hours to obtain the modified corn starch, wherein the solid-liquid ratio of the crosslinked corn starch to the ethanol aqueous solution with the volume fraction of 90% is 1 g: 8mL, and the solid-to-liquid ratio of the cross-linked corn starch to the deionized water is 1 g: 8 mL.
The cross-linking agent is sodium hexametaphosphate.
the modifier is octenyl succinic anhydride.
The preparation method of the infant corn talcum powder comprises the following steps:
(1) mixing water and glycerol, stirring at 50 deg.C at 80 rpm for 8 min, adding flos Matricariae Chamomillae leaf and stem extract of hybrid Lavender leaf and stem extract, and stirring at 50 deg.C at 80 rpm for 15 min to obtain mixed solution;
(2) mixing corn starch, magnesium stearate, zinc oxide and Kusora aloe juice powder, and stirring at 50 deg.C at 80 rpm for 15 minutes to obtain mixture;
(3) Spraying the mixed solution while stirring the mixed solution at 80 revolutions per minute, and stirring the mixed solution at 80 revolutions per minute for 25 minutes at 50 ℃ after the spraying is finished to obtain mixed powder;
(4) and crushing the mixed powder into 200 meshes, and drying in a drying oven at 50 ℃ for 6 hours to obtain the infant corn talcum powder.
example 5
The infant corn talcum powder comprises the following raw materials in parts by weight: 80 parts of corn starch, 4 parts of magnesium stearate, 4 parts of zinc oxide, 4 parts of chamomile leaf and stem extract, 2 parts of water, 2 parts of glycerol, 2 parts of aloe barbadensis leaf juice powder and 2 parts of wide and narrow leaf hybrid lavender leaf and stem extract.
The corn starch is a mixture of 35 wt% native corn starch and 65 wt% modified corn starch.
The preparation method of the chamomile leaf and stem extract comprises the following steps:
(1) pretreating leaves and stems of the mother chrysanthemum: collecting fresh mother chrysanthemum leaf and stem, drying in a drying oven at 50 ℃ for 22 hours, and crushing into 80 meshes to obtain mother chrysanthemum leaf and stem powder;
(2) Extraction: adding water 10 times the weight of the leaf and stem powder of the mother chrysanthemum into the leaf and stem powder of the mother chrysanthemum, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate A, adding water 8 times the weight of the leaf and stem powder of the mother chrysanthemum, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate B, combining the filtrate A and the filtrate B to obtain filtrate C, and concentrating the filtrate C under reduced pressure at 50 ℃ under the vacuum degree of 0.08MPa to the relative density of 1.25(50 ℃) to obtain the leaf and stem extract of the mother chrysanthemum.
the preparation method of the hybrid lavender flower-leaf-stem extract with wide and narrow leaves comprises the following steps:
(1) pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh wide and narrow leaf hybrid lavender flower and leaf stems, placing in a 50 ℃ drying oven for drying for 22 hours, and crushing into 80 meshes to obtain lavender flower and leaf stem powder;
(2) Extraction: adding water which is 10 times of the mass of the lavender flower and leaf powder into the lavender flower and leaf powder, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water which is 8 times of the mass of the lavender flower and leaf powder, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining the filtrate D and the filtrate E to obtain filtrate F, and concentrating the filtrate F under the reduced pressure at the vacuum degree of 0.08MPa and the temperature of 50 ℃ until the relative density is 1.25(50 ℃) to obtain the wide-narrow leaf hybrid lavender flower and leaf and stem extract.
the preparation method of the modified corn starch comprises the following steps:
(1) ball milling: mixing native corn starch and ethanol according to a solid-to-liquid ratio of 1 g: 1.5mL of the mixture is mixed, stirred for 15 minutes at 80 rpm and then put into a ball milling tank for ball milling, the ball milling time is 3 hours, the ball milling rotation speed is 500 rpm, a ball milling product is centrifuged for 6 minutes at 5000 rpm after the ball milling is finished, and the solid is dried for 5 hours at 75 ℃ to obtain superfine starch;
(2) enzymolysis: mixing superfine starch and deionized water to prepare a solution with the mass fraction of 25%, adding alpha-amylase with the mass of 0.08% of that of the superfine starch, stirring at the temperature of 70 ℃ for 10 minutes at 150 rpm, stirring at the temperature of 100 ℃ for 3 minutes at 150 rpm, performing suction filtration by adopting a nylon membrane with the diameter of 0.45 mu m, and drying the obtained solid at the temperature of 75 ℃ for 5 hours under the vacuum degree of 0.05MPa to obtain enzyme modified corn starch;
(3) and (3) crosslinking: mixing enzyme modified corn starch with deionized water to prepare a solution with the mass fraction of 25%, adding a cross-linking agent with the mass fraction of 4% of the enzyme modified corn starch, adjusting the pH to 9.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, stirring at 150 rpm for 4 hours at 50 ℃, performing suction filtration by using a nylon membrane with the diameter of 0.45 mu m, and performing vacuum filtration at the vacuum degree of 0.05MPa, washing the obtained solid with the deionized water until the eluate is neutral, and drying the solid for 5 hours at the temperature of 75 ℃ to obtain the cross-linked corn starch;
(4) hydrophobic modification: mixing crosslinked corn starch and deionized water to prepare a solution with the mass fraction of 25%, stirring at 42 ℃ at 150 revolutions per minute, adjusting the pH to 8.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, dropwise adding a modifier with the mass fraction of 5% of the crosslinked corn starch at the speed of 1 drop per second, continuously stirring at 42 ℃ at 150 revolutions per minute for 6 hours after dropwise adding, adjusting the pH to 6.8 by using a citric acid aqueous solution with the mass fraction of 8%, stirring at 42 ℃ at 150 revolutions per minute for 6 minutes, performing suction filtration by using a 0.45-micron nylon membrane, performing vacuum degree of 0.05MPa, alternately washing the obtained solid for 4 times by using an ethanol aqueous solution with the volume fraction of 90% and deionized water, and drying the solid at 75 ℃ for 5 hours to obtain the modified corn starch, wherein the solid-liquid ratio of the crosslinked corn starch to the ethanol aqueous solution with the volume fraction of 90% is 1 g: 8mL, and the solid-to-liquid ratio of the cross-linked corn starch to the deionized water is 1 g: 8 mL.
the cross-linking agent is sodium hexametaphosphate.
The modifier is glutaric anhydride.
The preparation method of the infant corn talcum powder comprises the following steps:
(1) Mixing water and glycerol, stirring at 50 deg.C at 80 rpm for 8 min, adding flos Matricariae Chamomillae leaf and stem extract of hybrid Lavender leaf and stem extract, and stirring at 50 deg.C at 80 rpm for 15 min to obtain mixed solution;
(2) Mixing corn starch, magnesium stearate, zinc oxide and Kusora aloe juice powder, and stirring at 50 deg.C at 80 rpm for 15 minutes to obtain mixture;
(3) spraying the mixed solution while stirring the mixed solution at 80 revolutions per minute, and stirring the mixed solution at 80 revolutions per minute for 25 minutes at 50 ℃ after the spraying is finished to obtain mixed powder;
(4) And crushing the mixed powder into 200 meshes, and drying in a drying oven at 50 ℃ for 6 hours to obtain the infant corn talcum powder.
Example 6
the infant corn talcum powder comprises the following raw materials in parts by weight: 80 parts of corn starch, 4 parts of magnesium stearate, 4 parts of zinc oxide, 4 parts of chamomile leaf and stem extract, 2 parts of water, 2 parts of glycerol, 2 parts of aloe barbadensis leaf juice powder and 2 parts of wide and narrow leaf hybrid lavender leaf and stem extract.
the corn starch is a mixture of 35 wt% native corn starch and 65 wt% modified corn starch.
The preparation method of the chamomile leaf and stem extract comprises the following steps:
(1) Pretreating leaves and stems of the mother chrysanthemum: collecting fresh mother chrysanthemum leaf and stem, drying in a drying oven at 50 ℃ for 22 hours, and crushing into 80 meshes to obtain mother chrysanthemum leaf and stem powder;
(2) Extraction: adding water 10 times the weight of the leaf and stem powder of the mother chrysanthemum into the leaf and stem powder of the mother chrysanthemum, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate A, adding water 8 times the weight of the leaf and stem powder of the mother chrysanthemum, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate B, combining the filtrate A and the filtrate B to obtain filtrate C, and concentrating the filtrate C under reduced pressure at 50 ℃ under the vacuum degree of 0.08MPa to the relative density of 1.25(50 ℃) to obtain the leaf and stem extract of the mother chrysanthemum.
The preparation method of the hybrid lavender flower-leaf-stem extract with wide and narrow leaves comprises the following steps:
(1) pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh wide and narrow leaf hybrid lavender flower and leaf stems, placing in a 50 ℃ drying oven for drying for 22 hours, and crushing into 80 meshes to obtain lavender flower and leaf stem powder;
(2) extraction: adding water which is 10 times of the mass of the lavender flower and leaf powder into the lavender flower and leaf powder, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water which is 8 times of the mass of the lavender flower and leaf powder, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining the filtrate D and the filtrate E to obtain filtrate F, and concentrating the filtrate F under the reduced pressure at the vacuum degree of 0.08MPa and the temperature of 50 ℃ until the relative density is 1.25(50 ℃) to obtain the wide-narrow leaf hybrid lavender flower and leaf and stem extract.
the preparation method of the modified corn starch comprises the following steps:
(1) Ball milling: mixing native corn starch and ethanol according to a solid-to-liquid ratio of 1 g: 1.5mL of the mixture is mixed, stirred for 15 minutes at 80 rpm and then put into a ball milling tank for ball milling, the ball milling time is 3 hours, the ball milling rotation speed is 500 rpm, a ball milling product is centrifuged for 6 minutes at 5000 rpm after the ball milling is finished, and the solid is dried for 5 hours at 75 ℃ to obtain superfine starch;
(2) Enzymolysis: mixing superfine starch and deionized water to prepare a solution with the mass fraction of 25%, adding alpha-amylase with the mass of 0.08% of that of the superfine starch, stirring at the temperature of 70 ℃ for 10 minutes at 150 rpm, stirring at the temperature of 100 ℃ for 3 minutes at 150 rpm, performing suction filtration by adopting a nylon membrane with the diameter of 0.45 mu m, and drying the obtained solid at the temperature of 75 ℃ for 5 hours under the vacuum degree of 0.05MPa to obtain enzyme modified corn starch;
(3) And (3) crosslinking: mixing enzyme modified corn starch with deionized water to prepare a solution with the mass fraction of 25%, adding a cross-linking agent with the mass fraction of 4% of the enzyme modified corn starch, adjusting the pH to 9.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, stirring at 150 rpm for 4 hours at 50 ℃, performing suction filtration by using a nylon membrane with the diameter of 0.45 mu m, and performing vacuum filtration at the vacuum degree of 0.05MPa, washing the obtained solid with the deionized water until the eluate is neutral, and drying the solid for 5 hours at the temperature of 75 ℃ to obtain the cross-linked corn starch;
(4) hydrophobic modification: mixing crosslinked corn starch and deionized water to prepare a solution with the mass fraction of 25%, stirring at 42 ℃ at 150 revolutions per minute, adjusting the pH to 8.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, dropwise adding a modifier with the mass fraction of 5% of the crosslinked corn starch at the speed of 1 drop per second, continuously stirring at 42 ℃ at 150 revolutions per minute for 6 hours after dropwise adding, adjusting the pH to 6.8 by using a citric acid aqueous solution with the mass fraction of 8%, stirring at 42 ℃ at 150 revolutions per minute for 6 minutes, performing suction filtration by using a 0.45-micron nylon membrane, performing vacuum degree of 0.05MPa, alternately washing the obtained solid for 4 times by using an ethanol aqueous solution with the volume fraction of 90% and deionized water, and drying the solid at 75 ℃ for 5 hours to obtain the modified corn starch, wherein the solid-liquid ratio of the crosslinked corn starch to the ethanol aqueous solution with the volume fraction of 90% is 1 g: 8mL, and the solid-to-liquid ratio of the cross-linked corn starch to the deionized water is 1 g: 8 mL.
the cross-linking agent is sodium hexametaphosphate.
The modifier is dodecenyl succinic anhydride.
the preparation method of the infant corn talcum powder comprises the following steps:
(1) Mixing water and glycerol, stirring at 50 deg.C at 80 rpm for 8 min, adding flos Matricariae Chamomillae leaf and stem extract of hybrid Lavender leaf and stem extract, and stirring at 50 deg.C at 80 rpm for 15 min to obtain mixed solution;
(2) Mixing corn starch, magnesium stearate, zinc oxide and Kusora aloe juice powder, and stirring at 50 deg.C at 80 rpm for 15 minutes to obtain mixture;
(3) Spraying the mixed solution while stirring the mixed solution at 80 revolutions per minute, and stirring the mixed solution at 80 revolutions per minute for 25 minutes at 50 ℃ after the spraying is finished to obtain mixed powder;
(4) and crushing the mixed powder into 200 meshes, and drying in a drying oven at 50 ℃ for 6 hours to obtain the infant corn talcum powder.
example 7
The infant corn talcum powder comprises the following raw materials in parts by weight: 80 parts of corn starch, 4 parts of magnesium stearate, 4 parts of zinc oxide, 4 parts of chamomile leaf and stem extract, 2 parts of water, 2 parts of glycerol, 2 parts of aloe barbadensis leaf juice powder and 2 parts of wide and narrow leaf hybrid lavender leaf and stem extract.
the corn starch is a mixture of 35 wt% native corn starch and 65 wt% modified corn starch.
the preparation method of the chamomile leaf and stem extract comprises the following steps:
(1) pretreating leaves and stems of the mother chrysanthemum: collecting fresh mother chrysanthemum leaf and stem, drying in a drying oven at 50 ℃ for 22 hours, and crushing into 80 meshes to obtain mother chrysanthemum leaf and stem powder;
(2) Extraction: adding water 10 times the weight of the leaf and stem powder of the mother chrysanthemum into the leaf and stem powder of the mother chrysanthemum, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate A, adding water 8 times the weight of the leaf and stem powder of the mother chrysanthemum, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate B, combining the filtrate A and the filtrate B to obtain filtrate C, and concentrating the filtrate C under reduced pressure at 50 ℃ under the vacuum degree of 0.08MPa to the relative density of 1.25(50 ℃) to obtain the leaf and stem extract of the mother chrysanthemum.
The preparation method of the hybrid lavender flower-leaf-stem extract with wide and narrow leaves comprises the following steps:
(1) pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh wide and narrow leaf hybrid lavender flower and leaf stems, placing in a 50 ℃ drying oven for drying for 22 hours, and crushing into 80 meshes to obtain lavender flower and leaf stem powder;
(2) Extraction: adding water which is 10 times of the mass of the lavender flower and leaf powder into the lavender flower and leaf powder, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water which is 8 times of the mass of the lavender flower and leaf powder, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining the filtrate D and the filtrate E to obtain filtrate F, and concentrating the filtrate F under the reduced pressure at the vacuum degree of 0.08MPa and the temperature of 50 ℃ until the relative density is 1.25(50 ℃) to obtain the wide-narrow leaf hybrid lavender flower and leaf and stem extract.
the preparation method of the modified corn starch comprises the following steps:
(1) Ball milling: mixing native corn starch and ethanol according to a solid-to-liquid ratio of 1 g: 1.5mL of the mixture is mixed, stirred for 15 minutes at 80 rpm and then put into a ball milling tank for ball milling, the ball milling time is 3 hours, the ball milling rotation speed is 500 rpm, a ball milling product is centrifuged for 6 minutes at 5000 rpm after the ball milling is finished, and the solid is dried for 5 hours at 75 ℃ to obtain superfine starch;
(2) Enzymolysis: mixing superfine starch and deionized water to prepare a solution with the mass fraction of 25%, adding alpha-amylase with the mass of 0.08% of that of the superfine starch, stirring at the temperature of 70 ℃ for 10 minutes at 150 rpm, stirring at the temperature of 100 ℃ for 3 minutes at 150 rpm, performing suction filtration by adopting a nylon membrane with the diameter of 0.45 mu m, and drying the obtained solid at the temperature of 75 ℃ for 5 hours under the vacuum degree of 0.05MPa to obtain enzyme modified corn starch;
(3) and (3) crosslinking: mixing enzyme modified corn starch with deionized water to prepare a solution with the mass fraction of 25%, adding a cross-linking agent with the mass fraction of 4% of the enzyme modified corn starch, adjusting the pH to 9.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, stirring at 150 rpm for 4 hours at 50 ℃, performing suction filtration by using a nylon membrane with the diameter of 0.45 mu m, and performing vacuum filtration at the vacuum degree of 0.05MPa, washing the obtained solid with the deionized water until the eluate is neutral, and drying the solid for 5 hours at the temperature of 75 ℃ to obtain the cross-linked corn starch;
(4) Hydrophobic modification: mixing crosslinked corn starch and deionized water to prepare a solution with the mass fraction of 25%, stirring at 42 ℃ at 150 revolutions per minute, adjusting the pH to 8.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, dropwise adding a modifier with the mass fraction of 5% of the crosslinked corn starch at the speed of 1 drop per second, continuously stirring at 42 ℃ at 150 revolutions per minute for 6 hours after dropwise adding, adjusting the pH to 6.8 by using a citric acid aqueous solution with the mass fraction of 8%, stirring at 42 ℃ at 150 revolutions per minute for 6 minutes, performing suction filtration by using a 0.45-micron nylon membrane, performing vacuum degree of 0.05MPa, alternately washing the obtained solid for 4 times by using an ethanol aqueous solution with the volume fraction of 90% and deionized water, and drying the solid at 75 ℃ for 5 hours to obtain the modified corn starch, wherein the solid-liquid ratio of the crosslinked corn starch to the ethanol aqueous solution with the volume fraction of 90% is 1 g: 8mL, and the solid-to-liquid ratio of the cross-linked corn starch to the deionized water is 1 g: 8 mL.
the cross-linking agent is sodium hexametaphosphate.
The modifier is isopropyl distearoyl acyloxy aluminate.
The preparation method of the infant corn talcum powder comprises the following steps:
(1) Mixing water and glycerol, stirring at 50 deg.C at 80 rpm for 8 min, adding flos Matricariae Chamomillae leaf and stem extract of hybrid Lavender leaf and stem extract, and stirring at 50 deg.C at 80 rpm for 15 min to obtain mixed solution;
(2) Mixing corn starch, magnesium stearate, zinc oxide and Kusora aloe juice powder, and stirring at 50 deg.C at 80 rpm for 15 minutes to obtain mixture;
(3) Spraying the mixed solution while stirring the mixed solution at 80 revolutions per minute, and stirring the mixed solution at 80 revolutions per minute for 25 minutes at 50 ℃ after the spraying is finished to obtain mixed powder;
(4) And crushing the mixed powder into 200 meshes, and drying in a drying oven at 50 ℃ for 6 hours to obtain the infant corn talcum powder.
Example 8
the infant corn talcum powder comprises the following raw materials in parts by weight: 80 parts of corn starch, 4 parts of magnesium stearate, 4 parts of zinc oxide, 4 parts of chamomile leaf and stem extract, 2 parts of water, 2 parts of glycerol, 2 parts of aloe barbadensis leaf juice powder and 2 parts of wide and narrow leaf hybrid lavender leaf and stem extract.
The corn starch is a mixture of 35 wt% native corn starch and 65 wt% modified corn starch.
the preparation method of the chamomile leaf and stem extract comprises the following steps:
(1) pretreating leaves and stems of the mother chrysanthemum: collecting fresh mother chrysanthemum leaf and stem, drying in a drying oven at 50 ℃ for 22 hours, and crushing into 80 meshes to obtain mother chrysanthemum leaf and stem powder;
(2) extraction: adding water 10 times the weight of the leaf and stem powder of the mother chrysanthemum into the leaf and stem powder of the mother chrysanthemum, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate A, adding water 8 times the weight of the leaf and stem powder of the mother chrysanthemum, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate B, combining the filtrate A and the filtrate B to obtain filtrate C, and concentrating the filtrate C under reduced pressure at 50 ℃ under the vacuum degree of 0.08MPa to the relative density of 1.25(50 ℃) to obtain the leaf and stem extract of the mother chrysanthemum.
The preparation method of the hybrid lavender flower-leaf-stem extract with wide and narrow leaves comprises the following steps:
(1) Pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh wide and narrow leaf hybrid lavender flower and leaf stems, placing in a 50 ℃ drying oven for drying for 22 hours, and crushing into 80 meshes to obtain lavender flower and leaf stem powder;
(2) Extraction: adding water which is 10 times of the mass of the lavender flower and leaf powder into the lavender flower and leaf powder, preserving heat for 3 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water which is 8 times of the mass of the lavender flower and leaf powder, preserving heat for 2 hours at 50 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining the filtrate D and the filtrate E to obtain filtrate F, and concentrating the filtrate F under the reduced pressure at the vacuum degree of 0.08MPa and the temperature of 50 ℃ until the relative density is 1.25(50 ℃) to obtain the wide-narrow leaf hybrid lavender flower and leaf and stem extract.
The preparation method of the modified corn starch comprises the following steps:
(1) ball milling: mixing native corn starch and ethanol according to a solid-to-liquid ratio of 1 g: 1.5mL of the mixture is mixed, stirred for 15 minutes at 80 rpm and then put into a ball milling tank for ball milling, the ball milling time is 3 hours, the ball milling rotation speed is 500 rpm, a ball milling product is centrifuged for 6 minutes at 5000 rpm after the ball milling is finished, and the solid is dried for 5 hours at 75 ℃ to obtain superfine starch;
(2) Enzymolysis: mixing superfine starch and deionized water to prepare a solution with the mass fraction of 25%, adding alpha-amylase with the mass of 0.08% of that of the superfine starch, stirring at the temperature of 70 ℃ for 10 minutes at 150 rpm, stirring at the temperature of 100 ℃ for 3 minutes at 150 rpm, performing suction filtration by adopting a nylon membrane with the diameter of 0.45 mu m, and drying the obtained solid at the temperature of 75 ℃ for 5 hours under the vacuum degree of 0.05MPa to obtain enzyme modified corn starch;
(3) and (3) crosslinking: mixing enzyme modified corn starch with deionized water to prepare a solution with the mass fraction of 25%, adding a cross-linking agent with the mass fraction of 4% of the enzyme modified corn starch, adjusting the pH to 9.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, stirring at 150 rpm for 4 hours at 50 ℃, performing suction filtration by using a nylon membrane with the diameter of 0.45 mu m, and performing vacuum filtration at the vacuum degree of 0.05MPa, washing the obtained solid with the deionized water until the eluate is neutral, and drying the solid for 5 hours at the temperature of 75 ℃ to obtain the cross-linked corn starch;
(4) Hydrophobic modification: mixing crosslinked corn starch and deionized water to prepare a solution with the mass fraction of 25%, stirring at 42 ℃ at 150 revolutions per minute, adjusting the pH to 8.5 by using a sodium hydroxide aqueous solution with the mass fraction of 8%, dropwise adding a modifier with the mass fraction of 5% of the crosslinked corn starch at the speed of 1 drop per second, continuously stirring at 42 ℃ at 150 revolutions per minute for 6 hours after dropwise adding, adjusting the pH to 6.8 by using a citric acid aqueous solution with the mass fraction of 8%, stirring at 42 ℃ at 150 revolutions per minute for 6 minutes, performing suction filtration by using a 0.45-micron nylon membrane, performing vacuum degree of 0.05MPa, alternately washing the obtained solid for 4 times by using an ethanol aqueous solution with the volume fraction of 90% and deionized water, and drying the solid at 75 ℃ for 5 hours to obtain the modified corn starch, wherein the solid-liquid ratio of the crosslinked corn starch to the ethanol aqueous solution with the volume fraction of 90% is 1 g: 8mL, and the solid-to-liquid ratio of the cross-linked corn starch to the deionized water is 1 g: 8 mL.
the cross-linking agent is sodium hexametaphosphate.
the modifier is a mixture of dodecenyl succinic anhydride and isopropyl distearoyloxy aluminate, and the mass ratio of the dodecenyl succinic anhydride to the isopropyl distearoyloxy aluminate is 4: 1.
The preparation method of the infant corn talcum powder comprises the following steps:
(1) Mixing water and glycerol, stirring at 50 deg.C at 80 rpm for 8 min, adding flos Matricariae Chamomillae leaf and stem extract of hybrid Lavender leaf and stem extract, and stirring at 50 deg.C at 80 rpm for 15 min to obtain mixed solution;
(2) mixing corn starch, magnesium stearate, zinc oxide and Kusora aloe juice powder, and stirring at 50 deg.C at 80 rpm for 15 minutes to obtain mixture;
(3) spraying the mixed solution while stirring the mixed solution at 80 revolutions per minute, and stirring the mixed solution at 80 revolutions per minute for 25 minutes at 50 ℃ after the spraying is finished to obtain mixed powder;
(4) and crushing the mixed powder into 200 meshes, and drying in a drying oven at 50 ℃ for 6 hours to obtain the infant corn talcum powder.
the obtained baby corn talcum powder has the following activation index: 96.71 percent; the angle of repose of the obtained infant corn talcum powder is 12.16 degrees.
Test example 1
the modified corn starches obtained in examples 1 to 7 were tested for their activation index. Specific results are shown in table 1. Wherein comparative example 1 is Wuyang baby powder, cat # WY 6159.
table 1 table of results of activation index test of modified corn starch
Activation index%
example 1 88.07
Example 2 93.34
Example 3 89.75
example 4 90.41
Example 5 92.58
example 6 94.47
example 7 93.73
comparative example 1 95.83
The activation index is a pair reflecting the powder surface hydrophobicity. A higher activation index indicates a more hydrophobic powder.
example 2 the activation index of the obtained baby corn powder was superior to that of example 1 by using first crosslinking and then hydrophobic modification, because the phosphate group of sodium hexametaphosphate forms a diester bond with the alcoholic hydroxyl group of starch, and after crosslinking, "bridges" are formed between starch molecules, which creates favorable conditions for further hydrophobic modification of starch.
example 2 the original corn starch is treated by ball milling and enzymolysis, and then cross-linked, and the activation index of the obtained baby corn talcum powder is better than that of examples 3 and 4, because the ball milling reduces the size of starch particles, the enzymolysis further destroys starch molecules, and more hydroxyl groups of the starch molecules are exposed outside, thereby increasing the active sites of the cross-linking reaction and the hydrophobic modification at the later stage, and improving the hydrophobicity.
Examples 2, 5, 6, 7 optimize the modifier and found that when the modifier is dodecenyl succinic anhydride, the activation index of the resulting infant corn powder is superior to that of the other modifiers.
Test example 2
The angle of repose of the infant corn powders obtained in examples 1-7 was tested. The specific results are shown in Table 2. Wherein comparative example 1 is Wuyang baby powder, cat # WY 6159.
The degree of freedom of relative movement between powder particles is reflected in the size of the angle of repose, and is a method for evaluating the flowability of powder, and a smaller value indicates better flowability of powder. It is defined as: the included angle between the accumulation slope surface formed by the powder free accumulation body and the horizontal plane.
Table 2: table for testing results of angle of repose of baby corn toilet powder
Angle of repose, °
Example 1 16.98
Example 2 15.82
example 3 16.68
example 4 16.24
Example 5 14.35
Example 6 13.06
Example 7 13.79
comparative example 1 16.43

Claims (4)

1. the infant corn talcum powder is characterized by comprising the following raw materials in parts by weight: 70-90 parts of corn starch, 3-5 parts of magnesium stearate, 3-5 parts of zinc oxide, 3-5 parts of chamomile leaf and stem extract, 1-3 parts of water, 1-3 parts of glycerol, 1-3 parts of aloe barbadensis leaf juice powder and 1-3 parts of broadleaf and narrow-leaf hybrid lavender leaf and stem extract;
The corn starch is a mixture of 25-45wt% of native corn starch and 55-75wt% of modified corn starch;
The preparation method of the modified corn starch comprises the following steps:
(1) ball milling: mixing native corn starch and ethanol according to a solid-to-liquid ratio of 1 g: (2-3) mixing the raw materials in the volume of mL, stirring the mixture for 10-20 minutes at 60-100 revolutions per minute, putting the mixture into a ball milling tank for ball milling, wherein the ball milling time is 2-5 hours, the ball milling rotating speed is 400 revolutions per minute, centrifuging the ball milled product for 4-8 minutes at 4000 revolutions per minute and 6000 revolutions per minute after the ball milling is finished, and drying the solid for 4-6 hours at 65-85 ℃ to obtain the ultrafine starch;
(2) enzymolysis: mixing superfine starch and deionized water to prepare a solution with the mass fraction of 20-30%, adding alpha-amylase with the mass of 0.02-0.2% of that of the superfine starch, stirring at 65-75 ℃ for 8-12 minutes at 200 revolutions per minute, stirring at 95-105 ℃ for 2-5 minutes at 200 revolutions per minute at 100 revolutions per minute, performing suction filtration by adopting a nylon membrane with the diameter of 0.45 mu m, and drying the obtained solid at 65-85 ℃ for 4-6 hours under the vacuum degree of 0.04-0.06MPa to obtain enzyme modified corn starch;
(3) And (3) crosslinking: mixing enzyme modified corn starch with deionized water to prepare a solution with the mass fraction of 20-30%, adding a cross-linking agent with the mass fraction of 3-5% of that of the enzyme modified corn starch, adjusting the pH to 9.0-10.0 by using a sodium hydroxide aqueous solution with the mass fraction of 5-10%, stirring at 40-60 ℃ at 200 revolutions per minute for 3-5 hours, performing suction filtration by using a nylon membrane with the particle size of 0.45 mu m and the vacuum degree of 0.04-0.06MPa, washing the obtained solid with the deionized water until the eluate is neutral, and drying the solid at 65-85 ℃ for 4-6 hours to obtain the cross-linked corn starch;
(4) hydrophobic modification: mixing the crosslinked corn starch and deionized water to prepare a solution with the mass fraction of 20-30%, stirring at the temperature of 35-50 ℃ at 200 revolutions per minute with 100 plus of sodium hydroxide aqueous solution with the mass fraction of 5-10% to adjust the pH value to 8.0-9.0, dripping a modifier with the mass fraction of 4-6% of the crosslinked corn starch at the speed of 1 drop/second, continuously stirring at the temperature of 35-50 ℃ at 200 revolutions per minute with 100 plus of sodium hydroxide aqueous solution for 5-8 hours after finishing dripping, adjusting the pH value to 6.5-7.0 with citric acid aqueous solution with the mass fraction of 5-10%, stirring at the temperature of 35-50 ℃ at 200 revolutions per minute with 100 plus of sodium hydroxide aqueous solution for 4-8 minutes, performing suction filtration by using a nylon membrane with the diameter of 0.45 mu m and the vacuum degree of 0.04-0.06MPa, alternately washing the obtained solid for 3-5 times by using ethanol aqueous solution with the volume fraction of 85-95% and deionized water, and drying the solid at 65-85 ℃ for 4-6 hours to obtain the modified corn starch, wherein the solid-to-liquid ratio of the cross-linked corn starch to an ethanol water solution with the volume fraction of 85-95% is 1 g: (5-10) mL, wherein the solid-to-liquid ratio of the cross-linked corn starch to the deionized water is 1 g: (5-10) mL;
the cross-linking agent is one of sodium hexametaphosphate and sodium trimetaphosphate, and the modifier is one or a mixture of glutaric anhydride, octenyl succinic anhydride, dodecenyl succinic anhydride and isopropyl distearoyl acyloxy aluminate.
2. The infant corn talcum powder of claim 1, wherein the extract of the leaf and stem of chamomile is prepared by a method comprising the steps of:
(1) pretreating leaves and stems of the mother chrysanthemum: collecting fresh leaves and stems of flos Matricariae Chamomillae, drying in a drying oven at 40-60 deg.C for 18-24 hr, and pulverizing into 60-100 mesh powder to obtain leaf and stem powder of flos Matricariae Chamomillae;
(2) Extraction: adding water 8-12 times the weight of the leaf and stem powder of the mother chrysanthemum into the leaf and stem powder of the mother chrysanthemum, preserving heat for 2-5 hours at 40-60 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate A, adding water 5-10 times the weight of the leaf and stem powder of the mother chrysanthemum, preserving heat for 1-3 hours at 40-60 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate B, combining the filtrate A and the filtrate B to obtain filtrate C, and concentrating the filtrate C at 40-60 ℃ under reduced pressure until the relative density is 1.2-1.3 to obtain the leaf and stem extract of the mother chrysanthemum.
3. The infant corn talcum powder according to claim 1, wherein the method for preparing the leaf and stem extract of hybrid lavender flowers and leaves comprises the following steps:
(1) pretreatment of leaves and stems of wide-narrow-leaf hybrid lavender: collecting fresh hybrid Lavender leaves and stems with wide and narrow leaves, drying in a drying oven at 40-60 deg.C for 18-24 hr, and pulverizing into 60-100 mesh to obtain Lavender leaves and stems powder;
(2) extraction: adding water 8-12 times the mass of lavender flower and stem powder into lavender flower and stem powder, preserving heat for 2-5 hours at 40-60 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate D, adding water 5-10 times the mass of lavender flower and stem powder, preserving heat for 1-3 hours at 40-60 ℃, filtering by adopting 300-mesh filter cloth to obtain filtrate E, combining filtrate D and filtrate E to obtain filtrate F, and concentrating the filtrate F at 40-60 ℃ under reduced pressure until the relative density is 1.2-1.3 to obtain the wide-narrow leaf hybrid lavender flower and stem extract.
4. The infant corn dusting powder of claim 1 wherein the modifier is a mixture of dodecenyl succinic anhydride and isopropyl distearoyloxy aluminate, the mass ratio of dodecenyl succinic anhydride to isopropyl distearoyloxy aluminate being (3-5): 1.
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