CN105725127A - Water chestnut dietary fiber powder with prebiotics function and preparation method thereof - Google Patents
Water chestnut dietary fiber powder with prebiotics function and preparation method thereof Download PDFInfo
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- CN105725127A CN105725127A CN201610097791.3A CN201610097791A CN105725127A CN 105725127 A CN105725127 A CN 105725127A CN 201610097791 A CN201610097791 A CN 201610097791A CN 105725127 A CN105725127 A CN 105725127A
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Preparation Of Fruits And Vegetables (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
The invention discloses water chestnut dietary fiber powder with prebiotics function and a preparation method thereof. The water chestnut dietary fiber powder is prepared through the steps of cleaning, peeling, slicing, color protecting, first-time crushing, freeze crushing, limited enzymolysis-drum drying, crosslinking and adsorbing, complexing, second-time crushing, blending, extruding granulating, screening and packaging by taking fresh water chestnut underground rhizomes as a raw material, and the prepared water chestnut powder retains whole dietary fiber and original flavor of water chestnuts, contains high-resistant starch and has both the instant solubility and the prebiotics effect. According to the water chestnut dietary fiber powder with prebiotics function and the preparation method thereof, embedded crosslinking, complexing, enzymatic debranching processing and drum drying are combined to be applied to the water chestnut dietary fiber powder production process, therefore, the reconstituability of the water chestnut powder can be effectively improved, the liquidity and solubility are improved, the resistant starch content in the product is increased, and the significant functions of regulating the intestinal microecological balance and improving the gastrointestinal function are achieved; in addition, the powder produced through extruding granulating is uniform in particle and loose and porous, can be swelled and pasted in a short time and has the good instant solubility and wetting property.
Description
Technical field
The invention belongs to food processing technology field, be specifically related to a kind of Horse hoof food fibre powder with prebiotics function and preparation method thereof.
Background technology
Horse hoof, also known as Corm Eleocharitis, for the underground bulb of Cyperaceae perennial plant Corm Eleocharitis, originates in India, and China is the place abounding with Horse hoof, and with Guilin Horse hoof quality for best, Guilin Horse hoof has long enjoyed a good reputation.Containing mineral elements such as rich in protein, dietary fiber, vitamin C and calcium ferrum in Horse hoof, there is higher nutrition and medical value, according to chemical assay, Horse hoof edible part contains protein 1.5%, fat 0.1%, saccharide 18%, starch 26%, crude fibre about 3.5%；Compendium of Material Medica is recorded, Corm Eleocharitis can " quench one's thirst, warming middle-JIAO QI invigorating, lower borax, pathogenic wind expelling poison, except excess-heat in the heart.Making the powder food bright knowledge of energy, disappear jaundice, whetting the appetite, can detoxify.Treat diaphragm gas, digestion-promoting copper.Controlling metrorrhagia, disappear diseases due to noxious agents produced by various parasites.Britain research personnel find that Staphyloccocus aureus, escherichia coli, aerobacteria and bacillus pyocyaneus are all had certain inhibitory action by this material containing a kind of " puchiin " in Horse hoof, and to reducing blood pressure, anti-curing oncoma also has certain effect.In Horse hoof carbohydrate, starch and dietary fiber occupy larger specific gravity.The thin meat of Horse hoof fruit skin is tender, and moisture is sufficient, fresh and sweet without slag, sharp and clear good to eat, had both cooked and also can eat raw as fruit, it can in addition contain make the products such as water chestnut cake, water chestnut juice, water chestnut starch.
Water chestnut starch is generally adopted hot air drying in process of production, but the product quality after hot air drying is poor.Roller drier is the drying machinery of heat transfer type in a kind of contact.In dry run, heat is passed to its outer wall by the inwall of cylinder, through being attached on cylinder outer wall face the food material being dried, the moisture on material is evaporated, is the manufacturing machine of a kind of continuous drying.Cylinder drying is because its operating flexibility is big, wide adaptability, the thermal efficiency are high, equipment cost is low and is widely used in food industry.Compared with other drying modes, cylinder dry has pre-gelatinized effect, it is possible to improves the gelatinization degree of product, improves the brew of product, and meanwhile, cylinder dry is conducive to increasing the porosity of product, improves the rehydration of product.In cylinder dry process, equally distributed fibre object mass-energy increases the micro cellular voids of thin film in the slurry, reducing the diffusional resistance within material system, thus increasing hygroscopic water from inside to the speed of surface migration, and alleviating the infringement of the heat color and luster to starchy material and local flavor.
Containing part amylose in Horse hoof starch, after amylose is processed, become resistant starch.Resistant starch be a class not by Healthy People intestinal absorption, but can be utilized by coliform in colon and for the general name of the starch fermented and hydrolysate thereof.The key factor affecting Yield of Resistant Starch is the amylose content in starch, starch is in the gelatinization process that is heated, starch granules imbibition is broken and is discharged amylose, lower the temperature subsequently retrogradation, between long-chain polymer, form resistant starch by Double helix superposition (i.e. amylose recrystallization).Pullulanase is the one of isoamylase, and it can cut α-1 of amylopectin branch point, 6 glycosidic bonds, makes in starch hydrolysate containing more free amylose molecules.Therefore, enzyme process is taken off a process by water chestnut starch production process and is combined the brew that can be effectively improved water chestnut starch with cylinder dry, and improve resistance starch content in product, produce the Horse hoof food fibre powder of high resistant starch content.
There is tissue odds in the water chestnut starch that traditional heated air drying produces, it is easy to moisture absorption, caking and be relatively difficult to ensure and deposit, and poorly soluble, reconstitute the shortcomings such as inconvenience.nullMaster's thesis " the production of the full powder of Corm Eleocharitis、Quality and applied research " (face upward center of percussion，The production of the full powder of Corm Eleocharitis、Quality and applied research，Agricultural University Of Anhui，2013) and patent of invention " a kind of Corm Eleocharitis fiber nutrient sheet low in calories and preparation technology thereof " (patent No.: 02151189.6)、" manufacture method of a kind of nutritious water chestnut powder " (patent No.: 200610016365.9)、" a kind of water chestnut instant powder and preparation method thereof " (patent No.: 201310434432.9)、" manufacture method of a kind of water chestnut starch " (patent No.: 201210207464.0)、" manufacture method of a kind of nutritious water chestnut powder " (patent No.: 200610016365.9)、" water chestnut starch of a kind of cold expelling that induces sweat and preparation method " (application number: 201210585440.9)、" the dyspeptic water chestnut starch of a kind of adjustment and preparation method " (application number: 201210584510.9)、" water chestnut starch of a kind of liver heat removing tonifying the lung and preparation method " (application number: 201210584839.5)、" a kind of health care water chestnut starch and preparation method thereof " (application number: 201410246328.)、" a kind of instant horseshoe full flour and preparation method thereof " (patent No.: 201310616889.1) is by the collocation processing and eating by water chestnut starch with nutrition food materials or medical material，The nutrient making up single diet is not enough，Produce the water chestnut starch with nutrition or health care，But due to hybrid process，The nutritive value of not prominent Horse hoof food fibre powder，And above-mentioned technique all water chestnut starch is not brewed after organoleptic attribute、Instant capacity and stability carry out effective evaluation.Patent of invention " preparation method rich in resistant starch Corm Eleocharitis dregs diet fibre " (patent No.: 201410159587.0) is slowly brought back to life and the multinomial technology synergy effect of enzymolysis purification by high humidity hot pressing solution branch, microwave acidolysis crosslinking, deepfreeze, digestible starches in Corm Eleocharitis slag is changed into resistant starch, prepare the Corm Eleocharitis dregs diet fibre rich in resistant starch, but do not change the consumption of water chestnut starch.
Extruder grain technology is to utilize ambient pressure to make solid material carry out the dry granulation reunited, and by being extruded by two roll shafts reversely rotated by material, the air that solid material is got rid of between powder makes particle rearrange, to eliminate the space of storeroom.The bulk material granule produced by extruder grain is uniform, loose porous, can swelling gelatinizing at short notice, there is good instant capacity and drenched property.
Summary of the invention
Present invention aims to the deficiency in existing process technology and Problems existing, a kind of Horse hoof dietary fiber with prebiotics function and preparation method thereof is provided, produces the Horse hoof food fibre powder product that local flavor performance good, instant is good, reconstitutes conveniently, be of high nutritive value.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of Horse hoof food fibre powder with prebiotics function, be made up of the raw material of following percentage by weight: enzyme process-cylinder dry process after water chestnut starch 62-67%, maltodextrin 17-21%, water 11-12% and sucralose 5%, the percentage by weight sum of each raw material is 100%.
The preparation method of the water chestnut starch after described enzyme process-cylinder dry process, specifically includes following steps:
1) clean: choose non-rot, without significant mechanical damage, fresh Horse hoof that bulb is complete, with dirts such as the silts on banister brush cleaning surface in flowing water；
2) peeling: the Horse hoof Multifunctional peeling knife after cleaning is removed the peel completely, Ex-all mechanical damage and speckle, then rinses well with clear water；
3) section: by step 2) the peeling Horse hoof cutter hand-cut sections that obtains, slice thickness is 0.5cm；
4) color fixative: the Horse hoof after step 3) being cut into slices immerses in colour-keeping liquid immediately, and the process time is 7 ~ 9min；
5) pulverize for the first time: it is broken that the Horse hoof section after step 4) being processed puts into the stirring that adds water in fiberizer, gained Horse hoof starched 100 mesh sieves, Horse hoof mud in screen cloth adds water mixing, repeats to sieve three times, the Horse hoof mud of gained finally adds 2.5 times of volumes of deionized water and is uniformly mixed so as to obtain Horse hoof slurry；
6) freezing and pulverizing: Horse hoof slurry step 5) obtained is pulverized by freezing crusher, and the temperature of freezing and pulverizing is-85～-75 DEG C, and whole crushing process is repeated once；
7) limited enzymolysis cylinder dry: use sodium citrate by the pH regulator of Horse hoof slurry that thaws in step 6) to 4 ~ 5, act on 5 ~ 6h when 60 ~ 70 DEG C with the pullulanase of 8 ~ 12U/g, be dried process by drum drying equipment afterwards；
8) crosslinking absorption: after the powder of step 7) gained is mixed with chitosan, porous-starch, add and the alcoholic solution of 60～70wt% is stirred mixing, the mass ratio of mixed-powder and alcoholic solution is 1:20, at 50～55 DEG C, in mixed liquor, add sodium bicarbonate subsequently pH value is adjusted to 7.2 ~ 7.5, it is simultaneously introduced the sodium trimetaphosphate of 0.06 ~ 0.07wt%, cleaning three times by 4 times of volumes of deionized water after centrifugation solid content, at 50～55 DEG C, vacuum drying is powder；
9) complexation: joined by the powder of step 8) gained in the dilution egg yolk liquid of 30wt%, the mass ratio of powder and dilution egg yolk liquid is 70 ~ 75:25 ~ 30, and carries out three homogenizing process, and at 50～55 DEG C, vacuum drying is powder；
10) separating twice: the powder of step 9) gained pulverizer is pulverized 5-10 minute, crosses 100 mesh sieves, the water chestnut starch being uniformly mixed.
Colour-keeping liquid described in step 4) is by 0.15wt% phytic acid, 0.1wt% citric acid and 0.3wt% ascorbic acid is composite forms.
Rapid 7) condition of intermediate roll dried is: drum surface temperature 110 ~ 120 DEG C, and cylinder rotating speed is 1 ~ 3rpm, and feedstock quality flow is 40 ~ 50kg/h.
The mass ratio of the powder described in step 8), chitosan and porous-starch is 3 ~ 5:50 ~ 52:43 ~ 47.
In step 9), homogenizing treatment conditions are for the first time: 80～95 DEG C, homogenization pressure 50～60MPa；Second time homogenizing treatment conditions are: 80～95 DEG C, homogenization pressure 35～40MPa；Third time homogenizing treatment conditions are: 80～95 DEG C, homogenization pressure 15～20MPa.
The preparation method of a kind of Horse hoof food fibre powder with prebiotics function as above, specifically includes following steps:
1) allotment: the water chestnut starch after enzyme process-cylinder dry process, maltodextrin, water and sucralose are mixed in proportion；
2) extruder grain, sieve: the mixture of step 1) gained being sent into rotating pelletizer and carries out pelletize, device parameter is: drum rotation speed 70 ~ 80rpm, rotating speed of agitator 35 ~ 40rpm, mixing time 700 ~ 800s, crosses 10 mesh sieves afterwards；
3) packaging: by step 2) sieve after water chestnut starch be encapsulated in packaging bag by specification, sealing, obtain finished product.
Easily there is brown stain in fresh Horse hoof, tradition water chestnut starch generally uses SO in the course of processing in the course of processing2Carry out color fixative, but health can be worked the mischief by sulfur residual.Additionally, Horse hoof belongs to heat sensitive material, easily making its active substance degeneration, cause nutritive loss during heating, directly influence organoleptic quality and the inherent quality of Horse hoof goods, therefore the present invention adopts non-sulfur prevention of discoloration technology.
In Horse hoof, dietary fiber is owing to being insoluble in water, brittleness height, freezing and pulverizing can effectively solve this problem, granule mobility after crushed is better, brew rear particle size distribution evenly, because of heating when solving ambient ground, aoxidize the denaturalization phenomenon caused, low-temperature grinding contributes to suppressing resistant starch to generate too early in the present invention simultaneously, thus reducing the difficulty of pulverizing.Granulation tissue grain diameter after chilled pulverizing reduces, and after contributing to starch gelatinization cooling, resistant starch directly forms nano-particle；Adsorbable nanometer of resistant starch granule of porous-starch subsequently and other dietary fibers, form composite network structure under the effect of chitosan.Adopt physical absorption maneuver simultaneously, flavor substance is embedded wherein, retains the local flavor of raw material to greatest extent, it is to avoid the shortcoming that traditional product adds essence.
Lecithin is that one can simultaneously improve body surface hydrophilic and hydrophobic natural materials, is natural nonionic amphoteric surfactant.Egg yolk is simple and easy to get, is the natural effective carrier that lecithin is good.Lecithin in egg yolk liquid defines hemicrystalline mass fractal layered laminate structure with starch inclusion complexation after reacting, compactness is greatly improved, the hydrophilic surface simultaneously produced is conducive to the raising of stability, when powder with brew contact time, liquid will effectively penetrate into powder particle, making whole granular system start effective degraded, solubility property is greatly enhanced.
The present invention has the great advantage that
(1) present invention adopts non-sulfur prevention of discoloration technology, and its effect of color protection is substantially suitable with the effect of sulphuring treatment, and safety and environmental protection, Financial cost is cheap；
(2) present invention adopts freezing and pulverizing, because of heating when solving dietary fiber ambient ground in Horse hoof, aoxidize the denaturalization phenomenon caused, low-temperature grinding contributes to suppressing resistant starch to generate too early, thus reducing the difficulty of pulverizing, mobility of particle after chilled pulverizing is better, brews rear particle size distribution evenly；
(3) present invention adopts cylinder dry, and compared with other drying modes, it has pre-gelatinized effect, contribute to the formation of resistant starch, it is possible to improve the gelatinization degree of product, improve the brew of product, meanwhile, cylinder dry is conducive to increasing the porosity of product, improves the rehydration of product；In the water chestnut starch that enzyme process-cylinder dry prepares, resistance starch content takes off, than without enzyme, the cylinder drying processed and improves in a large number, not only it is effectively improved the brew of water chestnut starch, and make it have and improve microbiologic population in human colon, promote inorganic salt to absorb and promote in intestinal the potential physiological functions such as the breeding of probiotics；
(4) adopt physical absorption maneuver, flavor substance is embedded wherein, retains the local flavor of raw material to greatest extent, it is to avoid the shortcoming that traditional product adds essence；
(5) the water chestnut starch granule that the present invention is produced by extruder grain is uniform, loose porous, can swelling gelatinizing at short notice, there is good instant capacity and drenched property, efficiently solve tradition water chestnut starch powder tissue odds, easy moisture absorption, caking and be relatively difficult to ensure and deposit, and poorly soluble, reconstitute the problems such as inconvenience；
(6) Application of composite sucralose of the present invention is as sweeting agent, replace sucrose or monosaccharide that tradition water chestnut starch production technology often uses, both can be effectively improved the sugariness of product, and can guarantee that again in human body intestinal canal, do not produce heat, and meet modern and pursue safety and Health, the low-energy consumption concept of sugar-free.
Detailed description of the invention
In order to make content of the present invention easily facilitate understanding, below in conjunction with detailed description of the invention, technical solutions according to the invention are described further, but the present invention is not limited only to this.
Embodiment 1
A kind of Horse hoof food fibre powder with prebiotics function, is made up of the raw material of following percentage by weight: enzyme process-cylinder dry process after water chestnut starch 62%, maltodextrin 21%, water 12% and sucralose 5%.
The preparation method of the water chestnut starch after described enzyme process-cylinder dry process, specifically includes following steps:
1) clean: choose non-rot, without significant mechanical damage, fresh Horse hoof that bulb is complete, with dirts such as the silts on banister brush cleaning surface in flowing water；
2) peeling: the Horse hoof Multifunctional peeling knife after cleaning is removed the peel completely, Ex-all mechanical damage and speckle, then rinses well with clear water；
3) section: by step 2) the peeling Horse hoof cutter hand-cut sections that obtains, slice thickness is 0.5cm；
4) color fixative: the Horse hoof after step 3) being cut into slices immerses in colour-keeping liquid immediately, and the process time is 7min；
5) pulverize for the first time: it is broken that the Horse hoof section after step 4) being processed puts into the stirring that adds water in fiberizer, gained Horse hoof starched 100 mesh sieves, Horse hoof mud in screen cloth adds water mixing, repeats to sieve three times, the Horse hoof mud of gained finally adds 2.5 times of volumes of deionized water and is uniformly mixed so as to obtain Horse hoof slurry；
6) freezing and pulverizing: Horse hoof slurry step 5) obtained is pulverized by freezing crusher, and the temperature of freezing and pulverizing is-75 DEG C, and whole crushing process is repeated once；
7) limited enzymolysis cylinder dry: use sodium citrate by the pH regulator of Horse hoof slurry that thaws in step 6) to 4, act on 5h when 60 DEG C with the pullulanase of 8U/g, be dried process by drum drying equipment afterwards；
8) crosslinking absorption: after the powder of step 7) gained is mixed with chitosan, porous-starch, add and the alcoholic solution of 60wt% is stirred mixing, the mass ratio of mixed-powder and alcoholic solution is 1:20, at 50 DEG C, in mixed liquor, add sodium bicarbonate subsequently pH value is adjusted to 7.2, it is simultaneously introduced the sodium trimetaphosphate of 0.06wt%, cleaning three times by 4 times of volumes of deionized water after centrifugation solid content, at 50 DEG C, vacuum drying is powder；
9) complexation: joined by the powder of step 8) gained in the dilution egg yolk liquid of 30wt%, the mass ratio of powder and dilution egg yolk liquid is 70:30, and carries out three homogenizing process, and at 50 DEG C, vacuum drying is powder；
10) separating twice: the powder of step 9) gained pulverizer is pulverized 10 minutes, crosses 100 mesh sieves, obtain the water chestnut starch of particle diameter, mix homogeneously.
Colour-keeping liquid described in step 4) is by 0.15wt% phytic acid, 0.1wt% citric acid and 0.3wt% ascorbic acid is composite forms.
The condition of step 7) intermediate roll dried is: drum surface temperature 110 DEG C, and cylinder rotating speed is 1rpm, and feedstock quality flow is 40kg/h.
The mass ratio of the powder described in step 8), chitosan and porous-starch is 3:50:47.
In step 9), homogenizing treatment conditions are for the first time: 95 DEG C, homogenization pressure 60MPa；Second time homogenizing treatment conditions are: 95 DEG C, homogenization pressure 40MPa；Third time homogenizing treatment conditions are: 95 DEG C, homogenization pressure 20MPa.
The preparation method of a kind of Horse hoof food fibre powder with prebiotics function as above, specifically includes following steps:
1) allotment: the water chestnut starch after enzyme process-cylinder dry process, maltodextrin, water and sucralose are mixed in proportion；
2) extruder grain, sieve: the mixture of step 1) gained being sent into rotating pelletizer and carries out pelletize, device parameter is: drum rotation speed 70rpm, rotating speed of agitator 35rpm, mixing time 700s, crosses 10 mesh sieves afterwards；
3) packaging: by step 2) sieve after water chestnut starch be encapsulated in packaging bag by specification, sealing, obtain finished product.
Embodiment 2
A kind of Horse hoof food fibre powder with prebiotics function, is made up of the raw material of following percentage by weight: enzyme process-cylinder dry process after water chestnut starch 67%, maltodextrin 17%, water 11% and sucralose 5%.
The preparation method of the water chestnut starch after described enzyme process-cylinder dry process, specifically includes following steps:
1) clean: choose non-rot, without significant mechanical damage, fresh Horse hoof that bulb is complete, with dirts such as the silts on banister brush cleaning surface in flowing water；
2) peeling: the Horse hoof Multifunctional peeling knife after cleaning is removed the peel completely, Ex-all mechanical damage and speckle, then rinses well with clear water；
3) section: by step 2) the peeling Horse hoof cutter hand-cut sections that obtains, slice thickness is 0.5cm；
4) color fixative: the Horse hoof after step 3) being cut into slices immerses in colour-keeping liquid immediately, and the process time is 9min；
5) pulverize for the first time: it is broken that the Horse hoof section after step 4) being processed puts into the stirring that adds water in fiberizer, gained Horse hoof starched 100 mesh sieves, Horse hoof mud in screen cloth adds water mixing, repeats to sieve three times, the Horse hoof mud of gained finally adds 2.5 times of volumes of deionized water and is uniformly mixed so as to obtain Horse hoof slurry；
6) freezing and pulverizing: Horse hoof slurry step 5) obtained is pulverized by freezing crusher, and the temperature of freezing and pulverizing is-85 DEG C, and whole crushing process is repeated once；
7) limited enzymolysis cylinder dry: use sodium citrate by the pH regulator of Horse hoof slurry that thaws in step 6) to 5, act on 6h when 70 DEG C with the pullulanase of 12U/g, be dried process by drum drying equipment afterwards；
8) crosslinking absorption: after the powder of step 7) gained is mixed with chitosan, porous-starch, add and the alcoholic solution of 70wt% is stirred mixing, the mass ratio of mixed-powder and alcoholic solution is 1:20, at 55 DEG C, in mixed liquor, add sodium bicarbonate subsequently pH value is adjusted to 7.5, it is simultaneously introduced the sodium trimetaphosphate of 0.07wt%, cleaning three times by 4 times of volumes of deionized water after centrifugation solid content, at 55 DEG C, vacuum drying is powder；
9) complexation: joined by the powder of step 8) gained in the dilution egg yolk liquid of 30wt%, the mass ratio of powder and dilution egg yolk liquid is 75:25, and carries out three homogenizing process, and at 55 DEG C, vacuum drying is powder；
10) separating twice: the powder of step 9) gained pulverizer is pulverized 5 minutes, crosses 100 mesh sieves, obtain the water chestnut starch of particle diameter mix homogeneously.
Colour-keeping liquid described in step 4) is by 0.15wt% phytic acid, 0.1wt% citric acid and 0.3wt% ascorbic acid is composite forms.
The condition of step 7) intermediate roll dried is: drum surface temperature 120 DEG C, and cylinder rotating speed is 3rpm, and feedstock quality flow is 50kg/h.
The mass ratio of the powder described in step 8), chitosan and porous-starch is 5:52:43.
In step 9), homogenizing treatment conditions are for the first time: 80 DEG C, homogenization pressure 50MPa；Second time homogenizing treatment conditions are: 80 DEG C, homogenization pressure 35MPa；Third time homogenizing treatment conditions are: 80 DEG C, homogenization pressure 15MPa.
The preparation method of a kind of Horse hoof food fibre powder with prebiotics function as above, specifically includes following steps:
1) allotment: the water chestnut starch after enzyme process-cylinder dry process, maltodextrin, water and sucralose are mixed in proportion；
2) extruder grain, sieve: the mixture of step 1) gained being sent into rotating pelletizer and carries out pelletize, device parameter is: drum rotation speed 80rpm, rotating speed of agitator 40rpm, mixing time 800s, crosses 10 mesh sieves afterwards；
3) packaging: by step 2) sieve after water chestnut starch be encapsulated in packaging bag by specification, sealing, obtain finished product.
Comparative example 1
Repeat embodiment 1, be different in that with traditional sulfur to protecting color method step of replacing 4) non-sulfur prevention of discoloration method, the effect of color protection of two kinds of methods compares as shown in table 1 with Horse hoof fresh slices:
The comparison of the different colour fixative effect of table 1
As shown in Table 1, adopting non-sulfur prevention of discoloration method can also protect the color and luster of Horse hoof fresh slices preferably, effect of color protection and sulfur to protecting color group are more or less the same, and safety is higher.
Comparative example 2
Repeat embodiment 1, be different in that with spray drying step of replacing 7) cylinder dry technique, it is as shown in table 2 that two kinds of methods dry the impact on Horse hoof food fibre powder quality:
The contrast to Horse hoof food fibre powder qualitative effects of the 2 two kinds of drying meanss of table
As shown in Table 2, compared with spray drying, the Horse hoof food fibre powder whiteness value after cylinder dry is higher, resistance starch content is higher, iodine blue value is relatively low, and the cylinder dry thermal efficiency is high.Therefore, select cylinder drying as the drying means of the Horse hoof food fibre powder with prebiotics function.
Comparative example 3
Repeat embodiment 1, be different in that with single cylinder dry technique step of replacing 7) limited enzymolysis cylinder dry technique, two kinds of methods are as shown in table 3 on the impact of resistance starch content in full Horse hoof food fibre powder:
The contrast that Horse hoof food fibre powder resistance starch content is affected by 3 two kinds of processing technique of table
As shown in Table 3, after de-of enzymolysis, resistance starch content is effectively improved.
The Horse hoof food fibre powder of embodiment 1, embodiment 2, comparative example 1, comparative example 2 and comparative example 3 does the mensuration of dissolubility, stability and dispersibility respectively, and assay method is as follows.
Dissolution characteristics measures: carrying out the mensuration of dissolubility according to " the deliquescent mensuration of Milk powder and formula foods for infant and young children " (GB/T5413.29-1997), formula is as follows:
In formula: m1Tared dish and insoluble matter quality (g)；m2Tared dish quality (g)；m3Sample quality (g)；
The coefficient of stability measures: takes 2g sample powder and is settled to 100mL, and centrifugal 20min in the centrifuge of 3000r/min, supernatant dilutes 100 times, makes blank with distilled water, measures the absorbance A under 600nm1, with the absorbance A of centrifugal front 600nm2Ratio be coefficient of stability, formula is as follows:
Dispersibility is investigated: takes 6g sample powder and adds 100mL55-60 DEG C of warm water, counterclockwise each stirring 10 time clockwise along wall of cup with Glass rod, has seen whether floating agglomerate.
Table 4 Horse hoof food fibre powder dissolubility, stability and dispersibility measurement result
As shown in Table 4, after embodiment 1 and embodiment 2 apply limited enzymolysis cylinder dry technique and extruder grain technology, dissolubility and stability all slightly decline, but are still maintained at better level, and each sample dispersibility effect is all good.Wherein after spray drying, grain diameter has rising by a relatively large margin, but does not affect the instant quality of sample.Freezing and pulverizing, cylinder dry can effectively reduce the grain diameter of sample with complexation technology after combining, strengthen the surface area of sample particle.After the contact of Horse hoof food fibre powder can form composite network gel structure after flash-dispersal solution after soaking the solution used, thus strengthening sample stability.
The Horse hoof food fibre powder of embodiment 1, embodiment 2, comparative example 1, comparative example 2 and comparative example 3 additionally carries out animal wastes probiotic bacteria assay after gavage respectively, and method is as follows, and result is as shown in table 5.
Laboratory animal: about 8 weeks age of mice Mus, body weight 20 ± 2g/ only, keeps room temperature 18 DEG C, relative humidity 50%, artificial lighting time 12 hour/day, automatic wind exhaust, morning every day changes food, water and sterilization bedding and padding 1 time, and sub-cage rearing is observed and within 7 days, can normally be taken food and drinker includes experimental rat in.
Instant powder solution allocation makes each mouse stomach amount be: instant powder 1000mLkg-1BW, it is ensured that every mouse stomach 0.4mL(calculates by every Mouse Weight 20g), blank group is with water gavage 0.4mL, and the instant powder solution used by gavage is placed in cold preservation at 4 DEG C.All mice free choice feeding basal diets, sub-cage rearing, collect the feces of every mice excretion every day simultaneously, freezing standby.Raise 14 days altogether.
Intestinal flora measures: analysis of intestinal microflora takes mice cecal content 0.2g with aseptic procedure, it is placed in in the sterile vials of bead, appropriate diluent is added in 1:10 ratio, then it is placed on agitator by bottle fully to vibrate 0.5min, after making it homogenize, then it is sequentially carried out 10 times of serial dilutions to 10-7.Select suitable dilution factor to take 1mL inoculation by Selective agar medium, then carry out aerobic and Anaerobic culturel respectively.Bacillus bifidus and lactobacillus use MRS culture medium, 37 DEG C, 48h Anaerobic culturel.Finally count the clump count of each bacterium.The bacterial population CFUg of every 1g feces-1=clump count × extension rate, the logarithm value logCFUg of the bacteria colony count in every gram of feces-1Represent.
Table 5 Horse hoof food fibre powder subjective appreciation and stool in mice probiotic bacteria assay result
As shown in Table 5, after embodiment 1 and embodiment 2 apply limited enzymolysis cylinder dry technique and extruder grain technology, improve bacillus bifidus, lactobacillus quantity, this is likely in powder relevant with resistance starch content raising.In sum, adopt the Horse hoof food fibre powder that present invention process makes can improve resistance starch content, and improve its quality characteristic and nutritive value.
The foregoing is only presently preferred embodiments of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of the present invention.
Claims (7)
1. a Horse hoof food fibre powder with prebiotics function, it is characterized in that: described Horse hoof food fibre powder is made up of the raw material of following percentage by weight: enzyme process-cylinder dry process after water chestnut starch 62-67%, maltodextrin 17-21%, water 11-12% and sucralose 5%, the percentage by weight sum of each raw material is 100%.
2. a kind of Horse hoof food fibre powder with prebiotics function according to claim 1, it is characterised in that: the preparation method of the water chestnut starch after described enzyme process-cylinder dry process, specifically include following steps:
1) clean: choose non-rot, without significant mechanical damage, fresh Horse hoof that bulb is complete, in flowing water, clean table with banister brush
The dirts such as the silt in face；
2) peeling: the Horse hoof Multifunctional peeling knife after cleaning is removed the peel completely, Ex-all mechanical damage and speckle, then rinses well with clear water；
3) section: by step 2) the peeling Horse hoof cutter hand-cut sections that obtains, slice thickness is 0.5cm；
4) color fixative: the Horse hoof after step 3) being cut into slices immerses in colour-keeping liquid immediately, and the process time is 7 ~ 9min；
5) pulverize for the first time: it is broken that the Horse hoof section after step 4) being processed puts into the stirring that adds water in fiberizer, gained Horse hoof starched 100 mesh sieves, Horse hoof mud in screen cloth adds water mixing, repeats to sieve three times, the Horse hoof mud of gained finally adds 2.5 times of volumes of deionized water and is uniformly mixed so as to obtain Horse hoof slurry；
6) freezing and pulverizing: Horse hoof slurry step 5) obtained is pulverized by freezing crusher, and the temperature of freezing and pulverizing is-85～-75 DEG C, and whole crushing process is repeated once；
7) limited enzymolysis cylinder dry: use sodium citrate by the pH regulator of Horse hoof slurry that thaws in step 6) to 4 ~ 5, act on 5 ~ 6h when 60 ~ 70 DEG C with the pullulanase of 8 ~ 12U/g, be dried process by drum drying equipment afterwards；
8) crosslinking absorption: after the powder of step 7) gained is mixed with chitosan, porous-starch, add and the alcoholic solution of 60～70wt% is stirred mixing, the mass ratio of mixed-powder and alcoholic solution is 1:20, at 50～55 DEG C, in mixed liquor, add sodium bicarbonate subsequently pH value is adjusted to 7.2 ~ 7.5, it is simultaneously introduced the sodium trimetaphosphate of 0.06 ~ 0.07wt%, cleaning three times by 4 times of volumes of deionized water after centrifugation solid content, at 50～55 DEG C, vacuum drying is powder；
9) complexation: joined by the powder of step 8) gained in the dilution egg yolk liquid of 30wt%, the mass ratio of powder and dilution egg yolk liquid is 70 ~ 75:25 ~ 30, and carries out three homogenizing process, and at 50～55 DEG C, vacuum drying is powder；
10) separating twice: the powder of step 9) gained pulverizer is pulverized 5-10 minute, crosses 100 mesh sieves, the water chestnut starch being uniformly mixed.
3. a kind of Horse hoof food fibre powder with prebiotics function according to claim 2, it is characterised in that: the colour-keeping liquid described in step 4) is by 0.15wt% phytic acid, 0.1wt% citric acid and 0.3wt% ascorbic acid is composite forms.
4. a kind of Horse hoof food fibre powder with prebiotics function according to claim 2, it is characterised in that: the condition of step 7) intermediate roll dried is: drum surface temperature 110 ~ 120 DEG C, and cylinder rotating speed is 1 ~ 3rpm, and feedstock quality flow is 40 ~ 50kg/h.
5. a kind of Horse hoof food fibre powder with prebiotics function according to claim 2, it is characterised in that: the mass ratio of the powder described in step 8), chitosan and porous-starch is 3 ~ 5:50 ~ 52:43 ~ 47.
6. a kind of Horse hoof food fibre powder with prebiotics function according to claim 2, it is characterised in that: in step 9), homogenizing treatment conditions are for the first time: 80～95 DEG C, homogenization pressure 50～60MPa；Second time homogenizing treatment conditions are: 80～95 DEG C, homogenization pressure 35～40MPa；Third time homogenizing treatment conditions are: 80～95 DEG C, homogenization pressure 15～20MPa.
7. the method preparing the Horse hoof food fibre powder as claimed in claim 1 with prebiotics function, it is characterised in that: specifically include following steps:
1) allotment: the water chestnut starch after enzyme process-cylinder dry process, maltodextrin, water and sucralose are mixed in proportion；
2) extruder grain, sieve: the mixture of step 1) gained being sent into rotating pelletizer and carries out pelletize, device parameter is: cylinder
Rotating speed 70 ~ 80rpm, rotating speed of agitator 35 ~ 40rpm, mixing time 700 ~ 800s, cross 10 mesh sieves afterwards；
3) packaging: by step 2) sieve after water chestnut starch be encapsulated in packaging bag by specification, sealing, obtain finished product.
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