CN109385100A - A kind of preparation method of bean dregs dietary fiber edible packaging composite membrane - Google Patents
A kind of preparation method of bean dregs dietary fiber edible packaging composite membrane Download PDFInfo
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- CN109385100A CN109385100A CN201811389935.8A CN201811389935A CN109385100A CN 109385100 A CN109385100 A CN 109385100A CN 201811389935 A CN201811389935 A CN 201811389935A CN 109385100 A CN109385100 A CN 109385100A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/463—Edible packaging materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2389/00—Characterised by the use of proteins; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/06—Pectin; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
Abstract
The invention discloses a kind of preparation methods of bean dregs dietary fiber edible packaging composite membrane, include the following steps: that weighing 100 parts by weight bean dregs is pulverized, and is taken wherein 15 parts by weight, is weighed 1 part of 1500 parts by weight distilled water, above-mentioned resulting bean dregs dietary fiber is added, prepares suspension；0.1%~0.5% pectin of 1~8 parts by weight is added into above-mentioned bean dregs dietary fiber suspension, stirs 30-40min under 50 DEG C of constant temperature, prepares stable bean dregs dietary fiber-pectin composite colloidal solution；0.5% CMC-Na of 7.5 parts by weight is added into above-mentioned bean dregs dietary fiber-pectin composite colloidal solution, it is added while stirring, after CMC-Na is completely dissolved, 30% glycerol stirring 20-30min is added, thyme essential oil is added and stirs 10-20min, film liquid is prepared；The bubble in the method elimination film liquid in conjunction with ultrasonic oscillation is filtered using reduced vacuum, film liquid is spread evenly across on glass baseplate with the tape casting, it is dry, film is taken off, constant temperature and humidity stands to get bean dregs dietary fiber edible packaging composite membrane.
Description
Technical field
The present invention relates to food packaging technical field of membrane, and in particular to a kind of bean dregs dietary fiber edible packaging composite membrane
Preparation method.
Background technique
Bean dregs are the by-products for producing the bean product such as bean curd, soya-bean milk, soymilk.Dietary fiber and egg rich in bean dregs
White matter has very high healthy nutritive value in addition containing nutritional ingredients such as isoflavones, lignan, phytosterols.China at present
Relatively low to the development and utilization level of bean dregs, most of bean dregs not only waste resource by as feed or offal treatment, but also
It polluted environment.Therefore, how bean dregs " to be turned waste into wealth ", is rationally all bean product using the dietary fiber that it is rich in
The key point that secondary industry is considered.
Edible packing membrane is to add edible film adjuvant using edible natural substance as raw material, passes through difference point
The film with porous network structure for interacting and being formed between son.Edible packing membrane is that domestic and international research is more popular
A kind of novel packaging material, the packaging film are dissolved in water, can eat together with packaged content, can play isolation it is extraneous with
Guarantee the safety of pack content, moreover it is possible to provide the nutriment beneficial to human body.It packs, is playing as a kind of novel green
While extending the basic function of this packaging of Food Shelf-life, edibility energy outstanding can effectively solve Packaging Waste
The white pollution problems of gurry.There are the sides such as physical mechanical property, antibacterial, antioxidation for current edible packaging composite membrane
The shortcomings that face, therefore develop with stronger physical mechanical property, and have unique flexibility, water-retaining property and antibacterial,
The edible packaging composite membrane of antioxidation is necessary.
Summary of the invention
(1) technical problems to be solved
In order to overcome the shortage of prior art, it is proposed that a kind of preparation side of bean dregs dietary fiber edible packaging composite membrane
Method, production cost is low, function admirable, safe and reliable.
(2) technical solution
The present invention is achieved through the following technical solutions: the invention proposes a kind of bean dregs dietary fiber edible packaging is compound
The preparation method of film, includes the following steps:
Step (1): 100 parts by weight bean dregs are weighed and are pulverized using micronizer, are sieved with 100 mesh sieve to get beans
Dregs diet fibre powder, take wherein 15 parts by weight as this prepare raw material, excessive powder sealing is set stores in a cool and dry place；
Step (2): weighing 1 part of 1500 parts by weight distilled water, bean dregs dietary fiber obtained in step (1) is added, in perseverance
10-15min is sufficiently stirred under 50 DEG C of constant temperature of warm magnetic stirring apparatus, prepares suspension；
Step (3): be added in bean dregs dietary fiber suspension obtained in step (2) 1~8 parts by weight 0.1%~
0.5% pectin stirs 30-40min under 50 DEG C of constant temperature, and after pectin is completely dissolved, it is fine to prepare stable bean dregs diet
Dimension-pectin composite colloidal solution；
Step (4): 7.5 parts by weight are added into bean dregs dietary fiber-pectin composite colloidal solution obtained by step (3)
0.5% CMC-Na, is added while stirring, stirs 30-40min under 50 DEG C of constant temperature, after CMC-Na is completely dissolved, is added
30% glycerol (account for bean dregs dietary fiber, pectin, CMC-Na gross mass percentage), stir 20- under 45 DEG C of constant temperature
30min is added 0.1% thyme essential oil of 7.2 parts by weight, stirs 10-20min under room temperature, film liquid is prepared；
Step (5): the gas in the method removal process (4) in conjunction with ultrasonic oscillation in film liquid is filtered using reduced vacuum
Bubble needs to be pressurized in time to prevent foam suck-back during filtering, film liquid is spread evenly across on glass baseplate with the tape casting, is done
It is dry, film is taken off, constant temperature and humidity stands to get bean dregs dietary fiber edible packaging composite membrane.
Further, it before bean dregs pulverize in step (1), is put into 50~60 DEG C of thermostatic drying chambers dry.
Further, the bubble in film liquid is removed in step (5), is carried out altogether twice, each 15min, the midfeather time 5
~10min.
Further, it is -0.09Mpa that reduced vacuum, which filters pressure, in step (5), and the frequency of ultrasonic oscillation processing is 20
~30KHz, time 15min are carried out twice altogether.
Further, drying temperature is 55 DEG C in step (5), drying time 10h.
Further, constant temperature and humidity stands to be placed in relative humidity 50% in step (5), temperature is perseverance under the conditions of 20 DEG C
Constant temperature and humidity case inner equilibrium is for 24 hours.
(3) beneficial effect
The present invention compared with the existing technology, has the advantages that
A kind of preparation method for bean dregs dietary fiber edible packaging composite membrane that the present invention mentions, preparation method is easy,
It is economic and environment-friendly, it is at low cost, any chemical reagent being harmful to the human body is not added, and film strength is high, and flexibility, good toughness reach
The requirement of food package film, the present invention add various coalescing agents using bean dregs as primary raw material, make the packing film of preparation
Not only there is stronger physical mechanical property, barrier property and optical property, but also there is certain antibacterial and antioxidation,
It is effectively prevent food spoilage, to extend its shelf life.Packing film can be eaten together with food, securely and reliably, be reduced pair
The white pollution of environment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
A kind of bean dregs dietary fiber edible packaging composite membrane is made of following mass fraction raw material:
15 parts of bean dregs dietary fiber powder, 1.5 parts of pectin, 7.5 parts of sodium carboxymethylcellulose, 7.2 parts of glycerol, thyme essential oil
1.5 parts, 1500 parts of water.
The preparation of bean dregs dietary fiber edible packaging composite membrane is carried out according to above-mentioned formula, specific steps are as follows:
(1) preparation of bean dregs dietary fiber powder:
It weighs 100 parts by weight bean dregs to be pulverized using micronizer, sieve with 100 mesh sieve fine to get bean dregs diet
Tie up powder, take wherein 15 parts by weight as this prepare raw material, excessive powder sealing is set stores in a cool and dry place；
(2) preparation of bean dregs dietary fiber suspension:
1500 parts by weight distilled water are weighed, bean dregs dietary fiber powder obtained in step (1) are added, in temperature constant magnetic stirring
10min is sufficiently stirred under 50 DEG C of constant temperature of device, prepares more stable suspension；
(3) bean dregs dietary fiber-pectin composite colloidal solution preparation:
Pectin is added into bean dregs dietary fiber suspension obtained in step (2), continues under 50 DEG C of constant temperature using perseverance
Warm magnetic stirrer 40min prepares stable composite colloidal solution after pectin is completely dissolved；
(4) preparation of the compound coating solution of bean dregs dietary fiber:
Sodium carboxymethylcellulose is added into bean dregs dietary fiber-pectin solution obtained in step (3), while stirring plus
Enter, continuation stirs 40min under 50 DEG C of constant temperature, after sodium carboxymethylcellulose is completely dissolved, glycerol is added, under 45 DEG C of constant temperature
Continue to stir 30min, thyme essential oil is added later, stirs 20min under room temperature, film liquid is prepared；
(5) preparation of bean dregs dietary fiber composite membrane:
The method that (- 0.09MPa, 30min) and ultrasonic oscillation (30min) is combined, which is filtered, using reduced vacuum eliminates film liquid
In bubble, filter during need in time be pressurized to prevent foam suck-back.Film liquid is spread evenly across glass baseplate with the tape casting
On, film is taken off after dry 10h in 55 DEG C of thermostatic drying chambers, the constant temperature being placed under the conditions of relative humidity 50%, temperature are 20 DEG C is permanent
Wet tank inner equilibrium for 24 hours, carries out correlated performance measurement later.
Embodiment 2
A kind of bean dregs dietary fiber edible packaging composite membrane is made of following mass fraction raw material:
15 parts of bean dregs dietary fiber powder, 3 parts of pectin, 7.5 parts of sodium carboxymethylcellulose, 7.65 parts of glycerol, thyme essential oil
1.5 parts, 1500 parts of water.
The preparation method is the same as that of Example 1 for the present embodiment edible composite film.
Embodiment 3
A kind of bean dregs dietary fiber edible packaging composite membrane is made of following mass fraction raw material:
15 parts of bean dregs dietary fiber powder, 4.5 parts of pectin, 7.5 parts of sodium carboxymethylcellulose, 8.1 parts of glycerol, thyme essential oil
1.5 parts, 1500 parts of water.
The preparation method is the same as that of Example 1 for the present embodiment edible composite film.
Embodiment 4
A kind of bean dregs dietary fiber edible packaging composite membrane is made of following mass fraction raw material:
15 parts of bean dregs dietary fiber powder, 6 parts of pectin, 7.5 parts of sodium carboxymethylcellulose, 8.55 parts of glycerol, thyme essential oil
1.5 parts, 1500 parts of water.
The preparation method is the same as that of Example 1 for the present embodiment edible composite film.
Embodiment 5
A kind of bean dregs dietary fiber edible packaging composite membrane is made of following mass fraction raw material:
15 parts of bean dregs dietary fiber powder, 7.5 parts of pectin, 7.5 parts of sodium carboxymethylcellulose, 9 parts of glycerol, thyme essential oil
1.5 parts, 1500 parts of water.
The preparation method is the same as that of Example 1 for the present embodiment edible composite film.
Comparative example
A kind of bean dregs dietary fiber edible packing membrane is made of following mass fraction raw material:
15 parts of bean dregs dietary fiber powder, 7.5 parts of sodium carboxymethylcellulose, 6.75 parts of glycerol, 1.5 parts of thyme essential oil, water
1500 parts.
The preparation of bean dregs dietary fiber edible packing membrane is carried out according to above-mentioned formula, specific steps are as follows:
(1) preparation of bean dregs dietary fiber powder:
It weighs 100 parts by weight bean dregs to be pulverized using micronizer, sieve with 100 mesh sieve fine to get bean dregs diet
Tie up powder, take wherein 15 parts by weight as this prepare raw material, excessive powder sealing is set stores in a cool and dry place；
(2) preparation of bean dregs dietary fiber suspension:
1500 parts by weight distilled water are weighed, bean dregs dietary fiber powder obtained in step (1) are added, in temperature constant magnetic stirring
10min is sufficiently stirred under 50 DEG C of constant temperature of device, prepares more stable suspension；
(3) preparation of bean dregs dietary fiber coating solution:
To sodium carboxymethylcellulose is added in step (2), it is added while stirring, continuation stirs 40min under 50 DEG C of constant temperature,
After sodium carboxymethylcellulose is completely dissolved, glycerol is added, continues to stir 30min under 45 DEG C of constant temperature, thyme is added later
Essential oil stirs 20min under room temperature, film liquid is prepared；
(4) preparation of bean dregs dietary fiber composite membrane:
The method that (- 0.09MPa, 30min) and ultrasonic oscillation (30min) is combined, which is filtered, using reduced vacuum eliminates film liquid
In bubble, filter during need in time be pressurized to prevent foam suck-back.Film liquid is spread evenly across glass baseplate with the tape casting
On, film is taken off after dry 10h in 55 DEG C of thermostatic drying chambers, the constant temperature being placed under the conditions of relative humidity 50%, temperature are 23 DEG C is permanent
Wet tank inner equilibrium for 24 hours, carries out correlated performance measurement later.
Experimental example 1
1) measurement of film thickness (d)
According to GB/T 6672-2001 plastic film and Foil thickness measurement mechanical measurement method, with micrometer caliper tested
10 point measurements are taken on sample at random, measurement three times, is averaged, as unit of mm, takes three effective digitals.
2) film stretching intensity (TS) measurement
According to GB/T 1040.3-2006, the measuring method of plastic tensile performance is measured using physical property measurement instrument.Specimen size
For 15mm × 150mm, initial spacing is 40mm, rate of extension 60mm/min, reads numerical value when film fracture, every group is done 6 and put down
Row sample, is averaged, tensile strength units MPa, and retest 3 times, formula is such as shown in (1).
Tensile strength
F in formula --- the maximum tension (N) born when sample fracture；
Cross-sectional area (the m of A --- test sample2)。
3) measurement of elongation at break (E)
Elongation at break measures synchronous when tensile strength according to GB/T1040.3-2006, the measuring method of plastic tensile performance
It obtains data to be calculated, formula is such as shown in (2):
Elongation at break
In formula: L0Length (mm) before the test of film sample；
Length (mm) of the L- film sample in fracture.
4) film water vapor permeation coefficient (WVP) measurement
According to GB/T 1037-1988 plastic film and sheet material water vapor permeability test method (cup type method) and GB/T
The measuring principle of rate of perviousness in 16928-1997 packaging material test method, with the calculating of water vapor permeation rate tester software kit
Obtain vapor transmission coefficient, unit gcm/cm2SPa, formula is such as shown in (3).
Vapor transmission coefficient
W in formulaVP--- vapor transmission coefficient (gcm/cm2·s·Pa)；
Δ M --- mass change (g) in the t time；
D --- thickness (cm)；
Effective area (the cm that A --- vapor penetrates2)；
Interval time (s) twice after t --- mass change is stable；
Δ P --- sample two sides vapor pressure difference (Pa).
5) film oily coefficient (P thoroughlyO) measurement
The oil of 1mL is added in test tube, certain area sample to be tested is taken, covers test tube mouth, tightened with rubber band, be inverted in filter
Paper places 2d, weighs the variation of film quality.This experimental period is 2d, and calculation formula is such as shown in (4).
Oil coefficient thoroughly
P in formulaO- oily coefficient thoroughly, gmm/m2·d；
The variation of Δ W-filter paper quality, g；
D-film thickness, mm；
S-paper product, m2；
T-standing time, d；
6) measurement of color
It is assessed using color of the color difference analysis instrument to material.Blackboard and blank school are carried out to color difference analysis instrument first
Just, L*, a* and the b* value of material are measured later.L* value is from 0 (black) to 100 (white), and a* value is from -80 (Huangs) to 100
(red), b* value is from -80 (indigo plants) to 70 (Huangs), total color difference Δ E* formula Δ E*=(Δ L*2+Δa*2+Δb*2)0.5To indicate.
All tests are repeated 3 times, and are averaged.
7) measurement of light transmittance (T) and mist degree (H)
According to the measuring method of GB/T 2410-2008 transparent plastic light transmittance and mist degree, 100mm*100mm sample 10 is cut
, sample will keep cleaning, smooth, not handy hand touch specimen surface, and must not have watermark, spot etc..Sample is put into light
Electric mist degree instrument is tested, and testing range will choose 45° angle degree or 20 ° according to actual test situation within the scope of 0-100%
Angle.Test result include style front and back sides with vertically and horizontally, take the vertical and horizontal average value of every one side as sample light transmittance and
Mist degree.
8) measurement of glossiness
According to GB/T 8807-1988 plastics bright luster test method, cuts 100mm*100mm sample 6 and open, sample table
The defects of smooth, without foul, scratch, is answered in face, carries out temperature and humidity pretreatment according to GB 2918.Sample is put into glossiness to survey
Determine instrument to be tested, 45° angle degree or 20 ° of angles are chosen according to actual test situation.Test result includes the front and back sides of style
With vertically and horizontally, take the vertical and horizontal average value of every one side as sample glossiness.
9) DPPH free radical scavenging activity measures
The DPPH methanol solution that 3mL concentration is 1 × 10-3mol/L is mixed with 9mL film sample soak.By mixed liquor
It is put into darkroom reaction 30min, with ultraviolet/absorbance of the visible spectrophotometer measurement mixed liquor at 517nm.Each sample is done
3 parallel laboratory tests, as a result take mean value.DPPH free radical scavenging activity presses formula (5) calculating:
DPPH free radical scavenging activity=(ADPPH-AS)/ADPPH× 100% ... (5)
In formula:
ADPPH--- the absorbance of DPPH methanol solution at 517nm；
AS--- the absorbance of composite membrane soak and the molten mixed liquor of DPPH methanol at 517nm.
10) anti-microbial property
Take 0.2mL concentration 106The Escherichia coli of a/mL and staphylococcus aureus bacteria suspension are coated on culture medium, will
It is attached on the culture medium of inoculation by the membrane sample (diameter 10mm) of ultraviolet sterilization 30min, 37 DEG C of constant temperature incubation 1d.Observation culture
Primary surface bacterium colony upgrowth situation measures the antibacterial effect of sample thin film with inhibition zone size.
The antibacterial entire area-diaphragm area of area=inhibition zone
The bean dregs diet of bean dregs dietary fiber edible packaging composite membrane and comparative example preparation prepared by embodiment 1-5 is fine
It ties up edible packing membrane and carries out performance test described in experimental example 1, as a result as shown in the table.
Bean dregs dietary fiber edible packaging composite membrane tensile strength made from the embodiment of the present invention is broken in 15MPa or more
It is average 6% or more to split elongation, addition pectin improves composite membrane penetrability, and oily coefficient is essentially 0 to film thoroughly, and optical property is excellent
Good, for DPPH clearance rate 40% or more, antibacterial area has been up to 260.16mm2, compared with comparative example (not adding pectin),
The composite membrane has good physical mechanical property, barrier property and an optical property, and with certain antibacterial and anti-oxidant
Effect, effectively prevent food spoilage, to extend its shelf life.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to structure of the invention
Think and range is defined.Without departing from the design concept of the invention, ordinary people in the field is to technology of the invention
The all variations and modifications that scheme is made, should all drop into protection scope of the present invention, the claimed technology contents of the present invention,
It is all described in the claims.
Claims (6)
1. a kind of preparation method of bean dregs dietary fiber edible packaging composite membrane, characterized by the following steps:
Step (1): 100 parts by weight bean dregs are weighed and are pulverized using micronizer, are sieved with 100 mesh sieve to get bean dregs meals
Eat fiber dust, take wherein 15 parts by weight as this prepare raw material, excessive powder sealing is set stores in a cool and dry place；
Step (2): weighing 1 part of 1500 parts by weight distilled water, bean dregs dietary fiber obtained in step (1) is added, in constant temperature magnetic
10-15min is sufficiently stirred under 50 DEG C of constant temperature of power blender, prepares suspension；
Step (3): the 0.1%~0.5% of 1~8 parts by weight are added in bean dregs dietary fiber suspension obtained in step (2)
Pectin, stir 30-40min under 50 DEG C of constant temperature, after pectin is completely dissolved, prepare stable bean dregs dietary fiber-fruit
Glue composite colloidal solution；
Step (4): the 0.5% of 7.5 parts by weight are added into bean dregs dietary fiber-pectin composite colloidal solution obtained by step (3)
CMC-Na, be added while stirring, stir 30-40min under 50 DEG C of constant temperature, after CMC-Na is completely dissolved, be added 30%
Glycerol stirs 20-30min under 45 DEG C of constant temperature, and 0.1% thyme essential oil of 7.2 parts by weight is added, stirs 10- under room temperature
Film liquid is prepared in 20min；
Step (5): filtering the bubble in the method removal process (4) in conjunction with ultrasonic oscillation in film liquid using reduced vacuum,
It needs to be pressurized in time to prevent foam suck-back during filtering, film liquid is spread evenly across on glass baseplate with the tape casting, it is dry, it takes off
Film, constant temperature and humidity stand to get bean dregs dietary fiber edible packaging composite membrane.
2. a kind of preparation method of bean dregs dietary fiber edible packaging composite membrane according to claim 1, feature exist
In: before bean dregs pulverize in step (1), it is put into 50~60 DEG C of thermostatic drying chambers dry.
3. a kind of preparation method of bean dregs dietary fiber edible packaging composite membrane according to claim 1, feature exist
In: the bubble in film liquid is removed in step (5), is carried out altogether twice, each 15min, 5~10min of midfeather time.
4. a kind of preparation method of bean dregs dietary fiber edible packaging composite membrane according to claim 1, feature exist
In: it is -0.09Mpa that reduced vacuum, which filters pressure, in step (5), and the frequency of ultrasonic oscillation processing is 20~30KHz, and the time is
15min is carried out twice altogether.
5. a kind of preparation method of bean dregs dietary fiber edible packaging composite membrane according to claim 1, feature exist
In: drying temperature is 55 DEG C in step (5), drying time 10h.
6. a kind of preparation method of bean dregs dietary fiber edible packaging composite membrane according to claim 1, feature exist
In: constant temperature and humidity stands the climatic chamber inner equilibrium to be placed in relative humidity 50%, under the conditions of temperature is 20 DEG C in step (5)
24h。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110294867A (en) * | 2019-07-05 | 2019-10-01 | 四川农业大学 | A kind of nanometer of silica aerogel novel package composite membrane and preparation method thereof |
| CN110804218A (en) * | 2019-11-28 | 2020-02-18 | 浙江工商大学 | Preparation method of edible film containing Sargassum horneri dietary fiber |
| CN111979845A (en) * | 2020-09-01 | 2020-11-24 | 四川农业大学 | Functional antibacterial wrapping paper for bean dreg dietary fiber |
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| CN110294867A (en) * | 2019-07-05 | 2019-10-01 | 四川农业大学 | A kind of nanometer of silica aerogel novel package composite membrane and preparation method thereof |
| CN110294867B (en) * | 2019-07-05 | 2021-11-19 | 四川农业大学 | Novel nano-silicon aerogel packaging composite film and preparation method thereof |
| CN110804218A (en) * | 2019-11-28 | 2020-02-18 | 浙江工商大学 | Preparation method of edible film containing Sargassum horneri dietary fiber |
| CN111979845A (en) * | 2020-09-01 | 2020-11-24 | 四川农业大学 | Functional antibacterial wrapping paper for bean dreg dietary fiber |
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