CN104855835A - Ultra-micro microencapsulation wheat germ powder preparation and application - Google Patents
Ultra-micro microencapsulation wheat germ powder preparation and application Download PDFInfo
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- CN104855835A CN104855835A CN201510203876.0A CN201510203876A CN104855835A CN 104855835 A CN104855835 A CN 104855835A CN 201510203876 A CN201510203876 A CN 201510203876A CN 104855835 A CN104855835 A CN 104855835A
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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
Abstract
The present invention discloses ultra-micro microencapsulation wheat germ powder preparation and application. Wheat germs are adopted as a raw material, and three crushing means, i.e., coarse crushing, airflow crushing and wet ball crushing, are used to make the wheat germs be in a ultra-micro crushing state. Sucrose fatty acid ester and beta-cyclodextrin account for 4% and 1.4% of the wheat germ powder by weight respectively. Technical parameters of the airflow crushing are that: the pulverizing pressure is 0.85MPa; the feeding pressure is 0.45Mpa; the feeding rate is 30mA; the ball to material ratio of the wet ball crushing is 4g/g; the wheat germ slurry concentration is 25%; the stirrer power is 41kw; and radiation sterilization is carried out when an irradiation dose is 6-8kGy. In such a way, ultra-micro microencapsulation wheat germ powder is prepared. According to the ultra-micro microencapsulation wheat germ powder, wheat germ nutrients can be better used; active substances are not prone to inactivation; and the ultra-micro microencapsulation wheat germ powder has a significant effect of reducing blood fat and has a wide range of values.
Description
Technical field
The present invention relates to the technical field of wheat deep processing, specifically, the present invention relates to a kind of technical field of ultra micro microencapsulation wheat germ powder preparations and applicatio.
Background technology
Wheat be mankind's cultivated area the most extensively, the crops that the most ancient, output is larger, it is live inseparable with the food of the mankind always for a long time.The mankind as important cereal crops nearly 35% make a living according to wheat, wheat all the time as flour for the mankind provide food.Wheat is the accessory substance that wheat flour is produced, and wheat accounts for the 2%-3% of wheat, and wheat has very abundant nutritive value.Be described as the laudatory title of " the nutrition treasure-house that the mankind are natural " because it is of high nutritive value, its protein, unrighted acid, mineral matter, various vitamin content are high, various amino acid classes Compositional balance, thus the Major Nutrient material becoming human research.But due to the not resistance to storage of wheat, and cause the waste of wheat.
The domestic and international Commercial cultivation to wheat not yet forms certain scale at present, and annual wheat flour of producing all can produce a large amount of wheats, greatly about 5.6 hundred million tons.Wheat not easily stores, and this precious resources of wheat is not yet developed fully.Along with the mankind increase gradually to the demand of nutrition, the Research Requirements of the storage of wheat is become increasingly conspicuous, thus make the utilization of wheat and exploitation become a large focus of wheat deep processing research.
The application of the broken technology of Food Super-tiny Powder is a kind of new try of food-processing industry, and for the improvement of traditional handicraft, formula, the exploitation of new product will bring huge motive force.The proportion of China's food industry gross output value in industrial department has leapt to the first position, and reach the scale of 5,000 hundred million yuan, but product structure is unreasonable, deep processed product instant food manufacturing industry only accounts for 16%.At present, promote the deep processing of food industry, improve the common recognition that added value of product has become society and enterprise.Therefore, superfine communication technique, as a kind of new and high technology, will have broad application prospects in food processing.
Through retrieval, have a lot about the research for the preparation of solid beverage, Yoghourt of wheat stability and wheat at present, and the research of some material ultramicro grinding, but about superfine communication technique, microcapsules technology are used for wheat preservation, the research of ultra micro wheat germ powder capsule has no report.Containing nutriments such as rich in protein, vitamin, amino acid in wheat, be of high nutritive value, but wheat is not easily stored, the amount of activated material in wheat is easily damaged, and causes the waste of resource.Therefore, explore and active material in research wheat farthest retains, can make that the trophic function of wheat is better realized, the industrialization continuous seepage of ultra micro microencapsulation wheat germ powder, the simple preparation process of industrial operation has great importance.
Summary of the invention
For having no the present Research utilizing superfine communication technique and microencapsulation technology to prepare ultra micro microencapsulation wheat germ powder at present.The present invention is intended to the preparations and applicatio providing a kind of ultra micro microencapsulation wheat germ powder, object is to make full use of wheat germ resource, utilize superfine communication technique and microencapsulation technology that the nutriment of wheat germ is fully utilized, the sense organ of the ultra micro microencapsulation wheat germ powder of preparation is good, stability strong, realize ultra micro microencapsulation wheat germ powder industrialization continuous seepage, and industrial operation is simple.The present invention solves the problem of complex utilization of Xinjiang wheat germ resource in industry development, and to lengthening manufacturing chain, promote fine finishining and the level of comprehensive utilization of wheat germ, the added value aspect improving wheat germ and processed goods all has great importance and is worth.
The present invention is achieved through the following technical solutions:
The present invention take wheat as raw material, adopts coarse crushing, air-flow crushing and wet ball grinding to pulverize three pulverizing means, makes wheat reach the degree of ultramicro grinding.Utilize emulsifying agent sucrose fatty ester, the wheat of ultramicro grinding carries out microencapsulation, and utilize radio sterilization means to carry out sterilization to ultra micro microencapsulation wheat germ powder, thus prepare ultra micro microencapsulation wheat germ powder by stabilizing agent beta-schardinger dextrin-.Ultra micro microencapsulation wheat germ powder makes the nutriment in wheat better be utilized, and active material is easy in inactivation not, and in reducing blood lipid, ultra micro microencapsulation wheat germ powder has a significant effect.
The present invention specifically provides a kind of preparation of ultra micro microencapsulation wheat germ powder, and concrete preparation method is as follows:
(1) pretreatment of raw material: select totally, without the wheat germ gone mouldy.
(2) coarse crushing: the wheat germ that step (1) is selected is carried out coarse crushing, crosses 60 mesh sieves.
(3) air-flow crushing: the wheat germ after step (2) being sieved adopts air-flow crushing mode to carry out air-flow ultramicro grinding, the technical parameter of the air-flow crushing adopted is for pulverizing pressure 0.85MPa, feed pressure 0.45 Mpa, charging rate 30mA, air-flow crushing number of times is 2 times.
(4) wet ball grinding is pulverized: the wheat germ powder after the air-flow crushing prepare step (3) carries out wet ball grinding pulverizing, and when wet ball grinding is pulverized, ratio of grinding media to material is 4g/g, and wheat germ concentration of slurry is 25%, and agitator power is 41kw.
(5) microencapsulation of wheat germ: take ultra micro wheat germ powder prepared by 7.5g step (4), be dissolved in 50mL water, add emulsifying agent sucrose fatty ester, the addition of sucrose fatty ester is 4% of wheat germ opaque amount, adds stabilizing agent beta-schardinger dextrin-simultaneously, and the addition of beta-schardinger dextrin-is for being wheat germ opaque amount 1.4%, and at 70 DEG C of Water Under bath heating 60min, make it dissolve, stir, mix.
(6) homogeneous: the mixed solution of the wheat germ, sucrose fatty ester and the beta-schardinger dextrin-that step (5) are prepared is carry out homogeneous under the condition of 50Mpa at homogenization pressure.
(7) spraying dry: be 220 DEG C at EAT, leaving air temp is carry out spray drying treatment to the material after step (6) homogeneous under the condition of 95 DEG C.
(8) radio sterilization: the double-deck PE bag of the wheat germ powder capsule after step (7) spraying dry is packed, packing inside bag selects Self-enclosing PE bag, outer packaging PE bag thermoplastic seals, every packed 50g, carries out radio sterilization by packaged wheat germ powder capsule in the condition that irradiation dose is 6-8kGy.
(9) ultra micro microencapsulation wheat germ powder can be prepared by above-mentioned steps.
Different materials has different Crushing Behaviors, often needs different breaking methods.The application of superfine communication technique in food processing has the significance in two, and one is the mouthfeel improving food, and is conducive to the absorption of nutriment; Two is that the raw material that originally can not fully absorb or utilize is re-used, and preparation becomes various functional food with deep processing, develops new food material, adds new food kind, improve resource utilization.The range of application of superfine communication technique not only comprises grain feed processing, biological products, Chinese herbal medicine, also can relate to the deep processing in the fields such as food, chemical industry, metallurgy.In the food industry, the Raw material processings such as all kinds of animals and plants, microorganism are become Ultramicro-powder, significant.It makes food have unique physical and chemical performance: the miniaturization due to particle causes showing and the increase of sum porosity, food is made to have good dispersiveness, adsorptivity, absorption affinity, affinity, dissolubility, chemism etc., thus the food of miniaturization has well fragrance, dispersiveness and dissolubility admittedly, especially easily digests and assimilates; Maintain the original biologically active of material and nutritional labeling largely, improve the mouthfeel of food.
The application in order to solve how to utilize wheat germ prepare ultra micro microencapsulation wheat germ powder " simple, practical be applicable to suitability for industrialized production " preparation method, application coarse crushing technology carries out coarse crushing to wheat germ, and cross 60 mesh sieves, air-flow crushing and wet ball grinding pulverizing are carried out to wheat germ in the basis of coarse crushing, wherein the number of times of air-flow crushing is twice, make wheat germ powder reach the degree of ultramicro grinding, improve the utilization rate of wheat germ powder Middle nutrition material; Sucrose fatty acid ester is emulsifying agent and beta-schardinger dextrin-is that stabilizing agent utilizes homogeneous and spray-dired technology to make ultra micro wheat germ powder capsule; And by the radio sterilization technology that concrete science is feasible, radio sterilization is carried out to ultra micro microencapsulation wheat germ powder, thus obtain ultra micro microencapsulation wheat germ powder.These technical characteristics have integrality and globality becomes the typical production process that preparation the application provides " ultra micro microencapsulation wheat germ powder ", the inventive concept of the application is on prior art basis, present superfine communication technique is utilized to combine with feasible micro-encapsulation technology theory, the creationary concrete viable process selecting most suitable superfine communication technique and microencapsulation, thus prepare ultra micro microencapsulation wheat germ powder.
Object of the present invention is not easily stored around wheat, active material easy in inactivation in wheat, the resource of wheat does not obtain exploitation fully and waits complex art problem, obtain the concrete preparation process of ultra micro microencapsulation wheat germ powder, adopt and wheat raw material is selected, removal is gone mouldy the pretreatment such as wheat germ powder, coarse crushing, air-flow crushing, the superfine communication techniques such as wet ball grinding pulverizing, and in conjunction with the microencapsulation of wheat germ, homogeneous, spraying dry, technology such as radio sterilization thus prepare ultra micro microencapsulation wheat germ powder, ensure that making full use of of wheat germ resource.
following beneficial effect can be reached by the summary of the invention implementing the present invention concrete:
(1) improvement of ultra micro microencapsulation wheat germ powder quality: ultra micro microencapsulation wheat germ powder prepared by the present invention not only solves wheat germ in storage and the limitation of application aspect, also provides reference value for widening wheat germ range of application; Ultra micro microencapsulation wheat germ powder improves the mouthfeel of wheat, the nutriment be conducive in wheat is digested, the raw material that originally can not fully absorb or utilize in wheat is re-used, preparation becomes wheat microcapsules with deep processing, develop this food material of wheat, improve the resource utilization of wheat.
(2) physical characteristic of ultra micro microencapsulation wheat germ powder is good: dispersiveness, adsorptivity, absorption affinity, affinity and dissolubility that ultra micro microencapsulation wheat germ powder prepared by the present invention is good.
(3) ultra micro microencapsulation wheat germ powder has the effect of reducing blood lipid: the ultra micro microencapsulation wheat germ powder using the present invention to prepare carries out Experiment of Zoology, the animal groups of ultra micro microencapsulation wheat germ powder prepared by gavage the present invention is compared with hyperlipidemia model group, and the TC index content of animal used as test reduces 32.6%; LDL-C index reduces 30.8%, and difference has conspicuousness; Through statistical analysis compared with Normal group, the body weight of rat significantly reduces, and the organ coefficient of liver significantly increases, hyperlipidemia model group hepatic tissue section fat vacuole showed increased, show high fat modeling success, ultra micro microencapsulation wheat germ powder compares with hyperlipidemia model, and fat vacuole significantly reduces.Ultra micro microencapsulation wheat germ powder has the effect of reducing blood lipid.
(4) application prospect of ultra micro microencapsulation wheat germ powder is good: ultra micro microencapsulation wheat germ powder prepared by the present invention meets the idea of development of the food industry of natural green and sustainable development, both resource can be made full use of, reduce environmental pollution, for development of new, natural, green nutraceutical additive, improve the comprehensive benefit of mulberries processing enterprise, have broad application prospects.
Accompanying drawing explanation
Fig. 1 is shown as preparation technology's flow chart of ultra micro microencapsulation wheat germ powder.
Fig. 2 is shown as the response surface figure of wheat germ powder particles granularity with ratio of grinding media to material, wheat germ concentration of slurry.
Fig. 3 is shown as the response surface figure of wheat germ powder particles granularity with ratio of grinding media to material, agitator power change.
Fig. 4 is shown as the response surface figure of wheat germ concentration of slurry and agitator power change.
Fig. 5 is shown as the effect diagram of emulsifying agent to the stability of wheat germ slurries.
Fig. 6 is shown as the effect diagram of stabilizing agent to the stability of wheat germ slurries.
Fig. 7 is shown as the effect diagram of sucrose fatty ester addition to the stability of wheat germ slurries.
Fig. 8 is shown as the effect diagram of beta-schardinger dextrin-addition to the stability of wheat germ slurries.
Detailed description of the invention
, for embodiment, the present invention is described below, but the present invention is not limited to following embodiment.In addition, in following explanation, if no special instructions, % all refers to m/m mass percent.
In the present invention, equipment and material have:
Raw material: wheat germ Xinjiang Aug. 1st flour mill
Reagent: maltodextrin, Shandong Qing Yuan Food Co., Ltd.; β-cyclodextrin, biochemical industry Co., Ltd of Huaxing of Mengzhou City; Tween-80, Chinese Medicine (group) Shanghai chemical reagent company; Potassium polyphosphate, Hangzhou Zhong Xiang Chemical Co., Ltd.; Monoglyceride, Shanghai reagent two factory; Sucrose fatty ester, Hangzhou Jin Helai food additives Co., Ltd; Sodium alginate, Hangzhou Zhong Xiang Chemical Co., Ltd.; It is pure that other reagent are analysis.
Equipment: 752 type ultraviolet specrophotometers, constant temperature oven, constant temperature water bath incubator, light microscope, photoelectric analytical balance, thermostat water bath, superclean bench, high-pressure sterilizing pot; Radiation source,
60co gamma ray projector, Wuxi City Jiang Yuan hospital; The permanent Science and Technology Ltd. in DZF-6020 type vacuum drying chamber Shanghai one; GJB high pressure homogeneous pump, Yixing Machinery Plant of Light Industry; DZ Spray Grain-make Drier, Wuxi sunlight spray drying device factory; MP200A electronic balance, balance factory of upper Nereid section; TDL-40B type centrifuge, Anting Scientific Instrument Factory, Shanghai; Soxhlet extractor, Guangzhou Shi Ji tech equipment Co., Ltd; The laboratory apparatus such as 723D grating spectrophotometer Shanghai electro-optical technology research institute.
The all reagent selected in the present invention, instrument, raw and auxiliary material are all well known selecting, but do not limit enforcement of the present invention, and other reagent more well known in the art and equipment are all applicable to the enforcement of the following embodiment of the present invention.
embodiment one: the preparation of ultra micro microencapsulation wheat germ powder
See accompanying drawing 1, the concrete preparation method of ultra micro microencapsulation wheat germ powder is as follows.
(1) pretreatment of raw material: select totally, without the wheat germ gone mouldy.
(2) coarse crushing: the wheat germ that step (1) is selected is carried out coarse crushing, crosses 60 mesh sieves.
(3) air-flow crushing: the wheat germ after step (2) being sieved adopts air-flow crushing mode to carry out air-flow ultramicro grinding, the technical parameter of the air-flow crushing adopted is for pulverizing pressure 0.85MPa, feed pressure 0.45 MPa, charging rate 30mA, air-flow crushing number of times is 2 times.
(4) wet ball grinding is pulverized: the wheat germ powder after the air-flow crushing prepare step (3) carries out wet ball grinding pulverizing, and when wet ball grinding is pulverized, ratio of grinding media to material is 4g/g, and wheat germ concentration of slurry is 25%, and agitator power is 41kw.
(5) microencapsulation of wheat germ: take ultra micro wheat germ powder prepared by 7.5g step (4), be dissolved in 50mL water, add emulsifying agent sucrose fatty ester, the addition of sucrose fatty ester is 4% of wheat germ opaque amount, adds stabilizing agent beta-schardinger dextrin-simultaneously, and the addition of beta-schardinger dextrin-is for being wheat germ opaque amount 1.4%, and at 70 DEG C of Water Under bath heating 60min, make it dissolve, stir, mix.
(6) homogeneous: the mixed solution of the wheat germ, sucrose fatty ester and the beta-schardinger dextrin-that step (5) are prepared is carry out homogeneous under the condition of 50Mpa at homogenization pressure.
(7) spraying dry: be 220 DEG C at EAT, leaving air temp is carry out spray drying treatment to the material after step (6) homogeneous under the condition of 95 DEG C.
(8) radio sterilization: the double-deck PE bag of the wheat germ powder capsule after step (7) spraying dry is packed, packing inside bag selects Self-enclosing PE bag, outer packaging PE bag thermoplastic seals, every packed 50g, carries out radio sterilization by packaged wheat germ powder capsule in the condition that irradiation dose is 6-8kGy.
(9) ultra micro microencapsulation wheat germ powder can be prepared by above-mentioned steps.
The application in order to solve how to utilize wheat germ prepare ultra micro microencapsulation wheat germ powder " simple, practical be applicable to suitability for industrialized production " preparation method, application coarse crushing technology carries out coarse crushing to wheat germ, and cross 60 mesh sieves, air-flow crushing and wet ball grinding pulverizing are carried out to wheat germ in the basis of coarse crushing, wherein the number of times of air-flow crushing is twice, make wheat germ powder reach the degree of ultramicro grinding, improve the utilization rate of wheat germ powder Middle nutrition material; Sucrose fatty acid ester is emulsifying agent and beta-schardinger dextrin-is that stabilizing agent utilizes homogeneous and spray-dired technology to make ultra micro wheat germ powder capsule; And by the radio sterilization technology that concrete science is feasible, radio sterilization is carried out to ultra micro microencapsulation wheat germ powder, thus obtain ultra micro microencapsulation wheat germ powder.These technical characteristics have integrality and globality becomes the typical production process that preparation the application provides " ultra micro microencapsulation wheat germ powder ", the inventive concept of the application is on prior art basis, present superfine communication technique is utilized to combine with feasible micro-encapsulation technology theory, the creationary concrete viable process selecting most suitable superfine communication technique and microencapsulation, thus prepare ultra micro microencapsulation wheat germ powder.
Protein in wheat, unrighted acid, mineral matter, various vitamin content are high, and various amino acid classes Compositional balance in wheat, wheat is a kind of important nutriment.But the not resistance to storage of wheat, therefore result in a large amount of wastes of wheat.Wheat ultra micro microencapsulation can be extended the storage time of wheat, in the ultra micro microencapsulation technology of simultaneously wheat, apply superfine communication technique.Superfine communication technique can improve the mouthfeel of wheat on the one hand, the nutriment be conducive in wheat is digested, on the other hand the raw material that originally can not fully absorb or utilize in wheat is re-used, preparation becomes wheat microcapsules with deep processing, develop this food material of wheat, improve the resource utilization of wheat.Ultra micro microencapsulation wheat germ powder meets the idea of development of the food industry of natural green and sustainable development, both resource can be made full use of, reduce environmental pollution, for development of new, natural, green nutraceutical additive, improve the comprehensive benefit of flour mill, have broad application prospects.
embodiment two: the determination of wet ball grinding disintegrating process parameter in ultra micro microencapsulation wheat germ powder craft
Ball mill grinding technology is exactly in ball mill, utilize the extruding force between abrasive media and shearing force to carry out comminuting matter, in order to the research solved about ball mill grinding mechanism relates to many Mathematical Modelings: grindability model, comminution ratio model, milling capacity model, particle-size distribution model, ratio of grinding media to material model etc.Ball mill grinding method is divided into dry pulverization process and wet pulverizing 2 kinds, because pulverizing object is wheat germ, it is protein in crushing process, the materials such as fat can be dispersed to born of the same parents in born of the same parents, affect the service behaviour of ball-milling medium, wet ball grinding utilizes water as decentralized medium, and the effective classical agglomeration traits solved in crushing process, has good crushing effect.
Under agitating ball mill rigid condition, the slip volume of agitating ball mill is 3.6L, main engine power 2.5KW, mixing drum internal diameter Φ 250mm.The principal element affecting ball mill ultramicro grinding effect has ratio of grinding media to material, agitator speed, wheat germ concentration of slurry.Therefore the present invention is using ratio of grinding media to material, agitator power, these three factors of wheat germ concentration of slurry as experimental factor, and carry out single factor experiment, fixing ball-milling medium is Φ 10mm zirconia ball; On the basis of single factor experiment, optimize optimal processing parameter by response surface analysis, with the grain graininess d after pulverizing
(50)as ultramicro grinding evaluation effect.
(1) single factor experiment of ratio of grinding media to material, agitator speed, these three factors of wheat germ concentration of slurry:
Ratio of grinding media to material single factor experiment factor index: 3g/g, 4g/g, 5g/g, 6g/g, 7 g/g.
Agitator power single factor experiment factor index: 30kw, 35kw, 40kw, 45kw, 50kw.
Wheat germ concentration of slurry single factor experiment factor index: 15%, 25%, 35%, 45%.
(2) response surface experiments:
In order to determine the optimum process condition of ball mill soybean dietary fiber wheat germ, Responds Surface Methodology is utilized to optimize ultramicro grinding technological parameter, on the basis of single factor test trial test, SAS software systems are utilized to carry out response surface analysis, the regression equation devising Three factors five level carrys out the functional relation between data fitting and index, selects ratio of grinding media to material (X
1), wheat germ concentration of slurry (X
2) and agitator speed (X
3) as factor, with the grain graininess d after pulverizing
(50)responsively be worth and ball mill soybean dietary fiber technique is optimized.Adopt SAS analysis software to carry out the process of data and the generation of three-dimension curved surface, therefrom disclose each influence factor and grain graininess d
(50)between inherent law, and find out the optimal region of each factor, experimental design in table 1, with the grain graininess d after pulverizing
(50)responsively be worth.
Table 1: the factor level table of response surface analysis
(3) result of the test
Table 2: ratio of grinding media to material, wheat germ concentration of slurry and agitator power are to grain graininess d
(50)the response surface analysis of impact tests result
| Number | X1 | X2 | X3 | Y |
| 1 | 3 | 35 | 30 | 33.74 |
| 2 | 5.68 | 25 | 40 | 27.90 |
| 3 | 5 | 35 | 30 | 31.49 |
| 4 | 5 | 15 | 30 | 32.35 |
| 5 | 4 | 25 | 56.82 | 29.43 |
| 6 | 4 | 25 | 23.18 | 32.88 |
| 7 | 4 | 25 | 40 | 18.56 |
| 8 | 4 | 25 | 40 | 18.56 |
| 9 | 4 | 8.18 | 40 | 30.56 |
| 10 | 4 | 41.82 | 40 | 28.51 |
| 11 | 5 | 15 | 50 | 29.53 |
| 12 | 4 | 41.82 | 40 | 28.51 |
| 13 | 4 | 25 | 40 | 18.57 |
| 14 | 3 | 35 | 50 | 32.46 |
| 15 | 4 | 25 | 40 | 18.56 |
| 16 | 4 | 25 | 40 | 18.57 |
| 17 | 3 | 15 | 30 | 31.36 |
| 18 | 3 | 15 | 50 | 34.04 |
| 19 | 5 | 35 | 50 | 24.71 |
Adopt regression equation Y=a
0+ a
1x
1+ a
2x
2+ a
3x
3+ a
11x
12+ a
22x
22+ a
33x
32+ a
12x
1x
2+ a
13x
1x
3+ a
23x
2x
3, the data in his-and-hers watches carry out regression analysis, carry out analysis and prediction to result of the test, and to pulverized particles d
50model carries out the inspection of overall and each analysis of variance, carries out significance test, regression coefficient and variance analysis to regression model and model coefficient simultaneously.
In table 2, can show that best ultramicro grinding process conditions are: ratio of grinding media to material 4.32g/g, wheat germ concentration of slurry 26.23%, agitator power 41.46kw in conjunction with the response surface figure provided see accompanying drawing 2,3 and 4.But according to actual conditions, can not meet the optimum data designed by software completely, in the light of actual conditions test, data are decided to be ratio of grinding media to material 4g/g, wheat germ concentration of slurry 26%, agitator power 41kw, experiment particle size results is 18.3um.
embodiment three: the selection of emulsifying agent and stabilizing agent and the determination of content thereof
(1) selection of emulsifying agent: after wheat germ ultramicro grinding, take 4 parts of 7.5g ultra micro wheat germ powder respectively, be dissolved in 50mL water, then monoglyceride, Tween-80, potassium polyphosphate and sucrose fatty ester is added respectively as emulsifying agent, its addition accounts for 4% of wheat germ Ultramicro-powder quality, 70 DEG C of Water Under bath heating 60min, measure the stability of wheat germ slurries, the results are shown in accompanying drawing 5.
As can be seen from accompanying drawing 5, Tween-80, monoglyceride and potassium polyphosphate are to the less stable of wheat germ slurries, and sucrose fatty ester is to the good stability of wheat germ slurries, and the coefficient of stability reaches 0.81, so select sucrose fatty ester as suitable emulsifying agent.
(2) selection of stabilizing agent: after wheat germ ultramicro grinding, take 4 parts of 7.5g ultra micro wheat germ powder, be dissolved in 50mL water, add the sucrose fatty ester of 4%, then stabilizing agent maltodextrin, beta-schardinger dextrin-and sodium alginate is added respectively, its addition is wheat germ opaque amount 1.4%, and measures the stability of wheat germ slurries after 70 DEG C of Water Under bath heating 60min, the results are shown in accompanying drawing 6.
As can be seen from accompanying drawing 6, beta-schardinger dextrin-significantly can improve the stability of wheat germ slurries, therefore determines that suitable stabilizing agent is beta-schardinger dextrin-.
(3) determination of sucrose fatty ester addition: take 5 parts of 7.5g ultra micro wheat germ powder, be dissolved in 50mL water, add sucrose fatty ester, its addition accounts for 2%, 4%, 6%, 8%, 10% of wheat germ slurry weight respectively, stir, and after 70 DEG C of Water Under bath heating 60min, measure the stability of wheat germ slurries, the results are shown in accompanying drawing 7.
As can be seen from accompanying drawing 7, when the addition of sucrose fatty ester is 4%, its coefficient of stability reaches 0.92, and along with the further increase of addition, the stability change of wheat germ slurries is little, and the suitable addition considering selected sucrose fatty ester is 4%.
(4) determination of beta-schardinger dextrin-addition: take 5 parts of 7.5g ultra micro wheat germ powder, be dissolved in 50mL water, add the sucrose fatty ester of 4%, add beta-schardinger dextrin-, its addition accounts for 1%, 1.2%, 1.4%, 1.6% of wheat germ quality respectively, stir, and measure the stability of wheat germ slurries after 70 DEG C of Water Under bath heating 60min, the results are shown in accompanying drawing 8.
As can be seen from accompanying drawing 8, along with the increase of beta-schardinger dextrin-addition, the stability of wheat germ slurries increases, when addition reaches 1.4%, the coefficient of stability reaches 0.63, increases further, stability change is little, therefore determines that suitable beta-schardinger dextrin-addition is 1.4%.
embodiment four: the determination of radio sterilization condition
(1) experimentation: ultra micro microencapsulation wheat germ powder, select double-deck PE bag to pack, packing inside bag selects Self-enclosing PE bag, outer packaging PE bag thermoplastic sealing, every packed 50g.Packaged wheat germ powder is placed in irradiation field, is 2kGy, 4kGy in radiation dose rate, 6kGy, 8kGy, 10kGy, preserve at ambient temperature after irradiation, detect total plate count, coliform, moisture, the ash content of sample in sampling in the 5th day and observe wheat germ powder organoleptic quality.
(2) experimental result
Wheat germ powder bactericidal effect: in order to draw suitable radio sterilization dosage, test sets 5 groups of dose of radiations, is respectively 2kGy, 4kGy, 6kGy, 8kGy, 10kGy.Gamma-ray irradiation wheat germ powder has good bactericidal effect, after 6kGy dose delivery, the total plate count of the miscellaneous bacteria in wheat germ powder and the inactivation ratio of thermoduric bacteria gemma reach 97.7% and 91.8% respectively, and along with the increase of dose of radiation, bacteria containing amount declines in synchronous, therefore adopting gamma-rays to carry out radiation sterilizing to wheat germ powder is feasible technically, determines suitable dose of radiation 6-8kGy.
Radio sterilization is on the impact of total plate count and heat resistant spores bacterium: the linear matching of testing result of total plate count and heat resistant spores bacterium, the logarithm value (y) of its survival rate and irradiation dose x(KGy) between meet y=-0.4105x+4.59 (coefficient R respectively
2=0.9964) and y=-0.304x+3.495 (coefficient R
2=0.9215), there is significant correlation between survival rate and irradiation dose.The D of total plate count and thermoduric bacteria gemma in wheat germ powder
10value is respectively 4.31kGy and 5.87kGy, from D
10difference can find out gemma to gamma-ray tolerance apparently higher than miscellaneous bacteria.
Irradiation is on the impact of wheat germ powder moisture and ash content: as can be seen from Table 3, and wheat germ powder moisture and content of ashes, after predose, significantly change does not occur, and moisture is at 10.79%-11.32%, and content of ashes is between 6.12%-6.21%.
Table 3: irradiation is on the impact of wheat germ powder moisture and ash content
Irradiation is on the impact of wheat germ powder organoleptic quality: irradiation wheat germ powder aesthetic quality evaluates and mainly carries out from wheat germ pink colour pool, smell and acceptable aspect.Wheat germ powder through radiation treatment after 1 month evaluation result in Table.Show that non-irradiation wheat germ powder is faint yellow, after the process of 2-8kGy dosage, color and luster, smell do not affect, in table 4.
Table 4: irradiation is on the impact of wheat germ powder organoleptic quality
Consider the impact of dose of radiation on the total plate count of sample, coliform, moisture, ash content and wheat germ powder organoleptic quality, determine the suitable dose of radiation 6-8kGy of ultra micro microencapsulation wheat germ powder.
embodiment five: the Experiment of Zoology of ultra micro microencapsulation wheat germ powder
Experimentation is as follows:
1, experimental design
(1) rat grouping and test arrangement:
SPF level SD male rat enters in SPF environment to feed after observation 7 d with basal feed and weighs, be divided into six groups at random: blank group, hyperlipidemia model group, fat-reducing medicament group, wheat group, ultra micro microencapsulation wheat germ group, often organize 10, be divided into that Normal group gives conventional daily ration, hyperlipidemia model group gives high fat daily ration, fat-reducing medicament group gives high fat daily ration+simvastatin, wheat group gives high fat daily ration+wheat aqueous solution, ultra micro microencapsulation wheat germ group gives high fat daily ration+the ultra micro microencapsulation wheat germ aqueous solution.Rat freely drinks ultra-pure water, within every 3 days, weighs once, and records gavage amount and health status.Rat Fast 16 hours after 28 days experimental periods, orbital vein is adopted to take a blood sample 1.5 mL, separation of serum, measures blood sugar (GLU), serum total cholesterol (TC), triglyceride (TG), HDL-C (HDL-CH), LDL-C (LDL-CH) content of rat.
(2) data processing
Total data average ± standard deviation (Mean ± SD) represents, adopts SPASS17.0 statistics software to process data, compares and adopt T inspection between two groups, and data more than two compare employing one-factor analysis of variance process.
2, result of the test
(1) each stage changes of weight of rat
Each group rat body weight there was no significant difference before test.Duration of test Normal group and other groups have significant difference (p<0.01), hyperlipidemia model group is except having except significant difference with the body weight of Normal group group, to organize difference not remarkable with other, show to test the impact of rat by high fat modeling, daily ingestion amount reduces, normal rat daily ingestion amount 15/200 g body weight, high fat modeling rat 10/200 g body weight, Normal group body weight increasess slowly, in table 5.
The each stage body weight of table 5:SD rat test
Note: carry out the one-factor analysis of variance with between column data, * represents and compares P<0.05 with control group; * represents P<0.01.
(2) foundation of high blood lipid model
Each group four items of blood lipid tests index serum total cholesterol (TC), triglyceride (TG), HDL-C (HDL-C) and LDL-C (LDL-C) content no significant difference (p<0.05) before test.Test eventually last hyperlipidemia model group TC, LDL-C content is significantly higher than blank group (p<0.01), shows that high fat modeling copies successfully, the results are shown in following table 6,7.
Table 6: indices (mmol/L) during on-test
| Group | TC | TG | HDL-C | LDL-C |
| Normal group | 1.99±0.19 | 0.96±0.33 | 0.72±0.13 | 0.41±0.04 |
| Fat-reducing medicament group | 2.00±0.18 | 0.83±0.20 | 0.65±0.05 | 0.45±0.06 |
| Hyperlipidemia model group | 1.97±0.29 | 0.93±0.46 | 0.64±0.06 | 0.44±0.11 |
Table 7: indices (mmol/L) during off-test
| Group | TC | TG | HDL-C | LDL-C |
| Normal group | 1.64±0.23 | 0.49±0.14 | 0.42±0.06 | 0.41±0.81 |
| Fat-reducing medicament group | 9.59±6.37** | 0.38±0.13 | 0.48±0.09 | 2.87±2.03** |
| Hyperlipidemia model group | 18.04±4.20** | 0.64±0.20 | 0.62±0.70 | 5.09±1.8** |
Note: during on-test, carries out the one-factor analysis of variance with between column data, and * represents and to compare with Normal group, P<0.05; * represents P<0.01; (3) liver histological change
Display is compared by Normal group, high blood lipid model group, wheat group and ultra micro microencapsulation wheat germ powder treated animal liver histological form, hyperlipidemia model group hepatic tissue section fat vacuole showed increased compared with Normal group, show high fat modeling success, wheat group and ultra micro microencapsulation wheat germ powder group compare with hyperlipidemia model group hepatic tissue section, and fat vacuole reduces.
(4) blood sugar and blood lipids index change
Table 8: blood sugar and four items of blood lipid tests index content when testing the 28th day
| Group | GLU | TC | TG | HDL-C | LDL-C |
| Hyperlipidemia model group | 2.25±0.81 | 18.04±4.20 ## | 0.64±0.20 ## | 0.62±0.70 # | 5.09±1.85 ## |
| Fat-reducing medicament group | 2.61±1.58 | 9.59±6.37** | 0.38±0.13** | 0.48±0.09* | 2.87±2.03** |
| Ultra micro microencapsulation wheat germ powder group | 4.03±1.04* # | 10.96±4.09** | 0.28±0.06** | 0.55±0.13 | 3.04±1.23** |
| Wheat group | 2.89±1.14 | 12.15±3.53** | 0.30±0.11** | 0.58±0.17 | 3.52±1.01* |
Note: carry out the one-factor analysis of variance with between column data, compare with hyperlipidemia model, * represents P<0.05, * * represents P<0.01; Represent and compare with lipid lowerers group, # represents P<0.05, and ## represents P<0.01
As seen from Table 8: blood sugar (GLU) index between ultra micro microencapsulation wheat germ powder group and hyperlipidemia model group exists significant difference, and compared with fat-reducing medicament group, ultra micro microencapsulation wheat germ powder group significant difference, wheat group difference is not remarkable.There is significant difference in TC, TG and LDL-C index between ultra micro microencapsulation wheat germ powder group and hyperlipidemia model group.To animal blood glucose and lipid aspects, ultra micro microencapsulation wheat germ powder group is obviously better than wheat group.
Conclusion: ultra micro microencapsulation wheat germ powder prepared by the present invention and wheat all have the effect reducing blood fat, have certain eliminating effect, show and have certain effect to the functional rehabilitation of liver the fat lesion of liver.But relative to wheat, ultra micro microencapsulation wheat germ powder prepared by the present invention is obviously better than wheat group in reducing blood lipid.
In sum; the present invention can be realized preferably; the above embodiments are only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that the present invention determines.
Claims (2)
1. a preparation for ultra micro microencapsulation wheat germ powder, is characterized in that, concrete preparation method is as follows:
(1) clean wheat germ pulverizer is carried out primary comminution;
(2) the wheat germ powder after pulverizing and water, sucrose fatty ester, beta-schardinger dextrin-, allocate;
(3) dispensing fluid carries out ball mill grinding;
(4) solution that ball milling is good carries out homogeneous, and spraying dry after homogeneous obtains corresponding product.
2. the preparation of a kind of ultra micro microencapsulation wheat germ powder as claimed in claim 1, it is characterized in that, concrete preparation method is as follows:
(1) pretreatment of raw material: select totally, without the wheat germ gone mouldy;
(2) coarse crushing: the wheat germ that step (1) is selected is carried out coarse crushing, crosses 60 mesh sieves;
(3) air-flow crushing: the wheat germ after step (2) being sieved adopts air-flow crushing mode to carry out air-flow ultramicro grinding, the technical parameter of the air-flow crushing adopted is for pulverizing pressure 0.85MPa, feed pressure 0.45 Mpa, charging rate 30mA, air-flow crushing number of times is 2 times;
(4) wet ball grinding is pulverized: the wheat germ powder after the air-flow crushing prepare step (3) carries out wet ball grinding pulverizing, and when wet ball grinding is pulverized, ratio of grinding media to material is 4g/g, and wheat germ concentration of slurry is 25%, and agitator power is 41kw;
(5) microencapsulation of wheat germ: take ultra micro wheat germ powder prepared by 7.5g step (4), be dissolved in 50mL water, add emulsifying agent sucrose fatty ester, the addition of sucrose fatty ester is 4% of wheat germ opaque amount, adds stabilizing agent beta-schardinger dextrin-simultaneously, and the addition of beta-schardinger dextrin-is for being wheat germ opaque amount 1.4%, and at 70 DEG C of Water Under bath heating 60min, make it dissolve, stir, mix;
(6) homogeneous: the mixed solution of the wheat germ, sucrose fatty ester and the beta-schardinger dextrin-that step (5) are prepared is carry out homogeneous under the condition of 50Mpa at homogenization pressure;
(7) spraying dry: be 220 DEG C at EAT, leaving air temp is carry out spray drying treatment to the material after step (6) homogeneous under the condition of 95 DEG C;
(8) radio sterilization: the double-deck PE bag of the wheat germ powder capsule after step (7) spraying dry is packed, packing inside bag selects Self-enclosing PE bag, outer packaging PE bag thermoplastic seals, every packed 50g, carries out radio sterilization by packaged wheat germ powder capsule in the condition that irradiation dose is 6-8kGy;
(9) ultra micro microencapsulation wheat germ powder can be prepared by above-mentioned steps.
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| CN107549780A (en) * | 2017-08-09 | 2018-01-09 | 张家港市常兴菌业有限公司 | A kind of preparation method of flammulina velutipes powder capsule |
| CN107897714A (en) * | 2017-11-21 | 2018-04-13 | 想念食品股份有限公司 | Anti-oxidant wheat germ powder and preparation method thereof |
| CN111820260A (en) * | 2020-07-28 | 2020-10-27 | 浙江维京生物科技有限公司 | Method for reducing acrylamide content in baked food |
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| CN104855835B (en) | 2018-03-20 |
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