CN110771801A - High-activity coarse cereal nutritional powder rich in polyphenol - Google Patents

High-activity coarse cereal nutritional powder rich in polyphenol Download PDF

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Publication number
CN110771801A
CN110771801A CN201911215624.4A CN201911215624A CN110771801A CN 110771801 A CN110771801 A CN 110771801A CN 201911215624 A CN201911215624 A CN 201911215624A CN 110771801 A CN110771801 A CN 110771801A
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coarse
polyphenol
coarse cereals
coarse cereal
nutritional powder
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王克俭
刘涛
王立东
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Heilongjiang Yuantai Agricultural Technology Co Ltd
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Heilongjiang Yuantai Agricultural Technology Co Ltd
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L7/00—Cereal-derived products; Malt products; Preparation or treatment thereof
    • A23L7/20—Malt products
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L11/00—Pulses, i.e. fruits of leguminous plants, for production of food; Products from legumes; Preparation or treatment thereof
    • A23L11/70—Germinated pulse products, e.g. from soy bean sprouts
    • 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

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  • Nutrition Science (AREA)
  • Chemical & Material Sciences (AREA)
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  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Agronomy & Crop Science (AREA)
  • Botany (AREA)
  • Cereal-Derived Products (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Beans For Foods Or Fodder (AREA)

Abstract

The invention relates to high-activity coarse cereal nutritional powder rich in polyphenol, which is prepared by soaking at least more than one coarse cereals for germination to obtain germinated coarse cereals; then, performing low-temperature vacuum curing and vacuum freeze drying treatment on the germinated coarse cereals to obtain pre-cured and dried germinated coarse cereals; mixing different types of pre-cured and dried germinated coarse cereals, and performing ultra-low temperature crushing and air flow ultra-micro crushing to finally obtain high-activity coarse cereal nutritional powder rich in polyphenol, wherein the retention rate of polyphenol components in the coarse cereal nutritional powder is 85-93%; wherein the low-temperature vacuum curing is to cure the germinated coarse cereals for 25-60 min at 50-70 ℃ under the vacuum degree of-0.05-0.1 Mpa, and the gelatinization degree of the aged coarse cereals is more than or equal to 85 percent. The low-temperature treatment is adopted in the whole curing and drying processes, so that the loss of the nutrient components such as polyphenol in the coarse cereals is kept to the maximum extent, and the obtained coarse cereal nutritional powder has high content of polyphenol active components.

Description

High-activity coarse cereal nutritional powder rich in polyphenol
The technical field is as follows:
the invention relates to the technical field of instant food processing, in particular to high-activity coarse cereal nutritional powder rich in polyphenol.
Secondly, background art:
polyphenols, which are hydroxy derivatives of aromatic hydrocarbons, are widely distributed in nature, and are highly susceptible to oxidation due to the presence of active functional groups such as phenolic hydroxy groups in the molecule, and are therefore excellent antioxidants. The plant polyphenol is generally ferulic acid, sinapic acid, protocatechuic acid, vanillic acid, syringic acid, caffeic acid, p-coumaric acid, p-hydroxybenzoic acid, p-hydroxyphenylacetic acid, tricin, quercetin, apigenin, kaempferol, etc. The polyphenol has potential health promoting effects as a functional active component, such as preventing and treating hypertension, coronary heart disease, diabetes, reducing blood lipid, delaying aging, and treating cataract.
The coarse cereals have considerable content of polyphenol substances, such as barley with polyphenol content of 150mg/100g, oat with polyphenol content of 642mg/100g, and coix seed with polyphenol content of 48mg/100 g. The polyphenol of the coarse cereals can be taken in through daily diet, but people need to process the coarse cereal raw materials in different modes such as boiling, steaming, baking, high-temperature drying and the like in the eating process, and active components such as the polyphenol and the like are easily damaged in the processing process, so that the content of the polyphenol is reduced or inactivated, and the nutritional value of the coarse cereals is reduced.
Under the conditions of proper moisture, temperature and the like, germs can germinate gradually, and a series of complex physiological and biochemical changes occur in the process. After germination, the nutritional ingredients of the coarse cereal and mixed bean are not only retained, but also the contents of partial nutritional ingredients are obviously increased due to germ germination and enzyme system activation. Therefore, the germination treatment not only can convert nutrients and improve the taste and quality of grains such as coarse cereals, beans and the like, but also can enrich certain active substances with physiological functions on human bodies. Researches of researchers find that the content of total phenol, total flavone and rutin is increased along with the increase of the germination days when the tartary buckwheat is germinated for 9 days, and the content of polyphenol substances of mung beans, broad beans and the like after germination treatment is obviously increased.
The coarse cereals are rich in nutrition and are known as nutritional health foods. The coarse cereal nutritional powder is one of the daily edible coarse cereal products of people, and has the effects of nutrition and convenience. At present, various coarse cereal nutritional powder products have various types, various processing means and different nutritional effects. For example, the chinese patent application CN107890091A discloses a black coarse cereal nutritional powder and a preparation method thereof, wherein coarse cereal raw materials such as black millet, black bean, black rice and the like are fried, and then are crushed and blended to obtain a coarse cereal nutritional powder product, which has certain nutritional effects of scavenging free radicals, delaying aging, improving sleep and the like; chinese patent application CN109619396A discloses a coarse cereal powder with the effects of reducing blood fat and losing weight and a production method thereof, wherein a plurality of materials such as millet, corn, oat and the like are mixed and crushed, then the crushed materials are extruded and puffed, and are further dried and crushed to obtain the coarse cereal powder, and the coarse cereal powder has the functions of reducing blood fat, losing weight and regulating intestinal flora. Patent CN109527348A discloses instant coarse cereal mixing powder and a preparation method thereof, which adopts a method combining high-temperature cooking, low-temperature water milling, microwave drying and low-temperature baking. The coarse cereal powder prepared by the method has less nutrient loss and high feasibility.
The coarse cereal powder product prepared in the patent application is processed by different processing technologies, and contains a certain amount of polyphenol and other active components, but the processing process adopts different modes such as high-temperature stir-frying, high-temperature extrusion, high-temperature cooking, high-temperature crushing and the like, so that the loss of the polyphenol active components in the coarse cereal and mixed bean is seriously reduced, and the nutrition loss is caused. Therefore, in the process of preparing the coarse cereal nutritional powder, a certain technical method is needed to keep the content of polyphenol active components, reduce the nutritional loss in the processing process, and simultaneously reduce energy consumption resources such as water, electricity, steam and the like as far as possible, thereby finally obtaining a high-activity coarse cereal nutritional powder new product rich in polyphenol active components.
Thirdly, the invention content:
the invention aims to provide high-activity coarse cereal nutritional powder rich in polyphenol, which is used for solving the problems of serious loss of polyphenol active components of coarse cereal and mixed bean and nutrient loss caused in the preparation process of coarse cereal powder products in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the high-activity coarse cereal nutritional powder rich in polyphenol is prepared by soaking at least more than one coarse cereals for germination to obtain germinated coarse cereals; then, performing low-temperature vacuum curing and vacuum freeze drying treatment on the germinated coarse cereals to obtain pre-cured and dried germinated coarse cereals; mixing different types of pre-cured and dried germinated coarse cereals, and performing ultra-low temperature crushing and air flow ultra-micro crushing to finally obtain high-activity coarse cereal nutritional powder rich in polyphenol, wherein the retention rate of polyphenol components in the coarse cereal nutritional powder is 85-93%;
wherein the low-temperature vacuum curing is to cure the germinated coarse cereals for 25-60 min at 50-70 ℃ under the vacuum degree of-0.05-0.1 Mpa, and the gelatinization degree of the aged coarse cereals is more than or equal to 85 percent.
The vacuum freeze drying treatment method in the scheme comprises the following steps: dispersing the coarse cereal material which is cured at low temperature in vacuum and is adhered, freezing for 3-8h at-10 to-24 ℃, and then carrying out vacuum freeze drying until the water content is below 8%.
The soaking and germinating treatment method in the scheme comprises the following steps: soaking the cleaned coarse cereals in purified water at the temperature of 25-30 ℃ for 0.5-15 h at the material-water ratio of 1: 1-1: 6, controlling the water content of the coarse cereal raw materials to be 25-50% after soaking, draining off water, and germinating at 25-30 ℃ for 20-48 h to obtain germinated coarse cereals with the germination length of 0.5-2 mm.
The method for crushing the pre-cured and dried germinated coarse cereals at the ultra-low temperature after mixing the different types of pre-cured and dried germinated coarse cereals comprises the steps of blending the different types of pre-cured and dried germinated coarse cereals, adding nut and/or seed food materials, crushing at the ultra-low temperature of-196 ℃ to obtain powder with the particle size of 100-140 meshes, crushing by using a cryogenic crusher, and realizing brittle crushing of the materials at the low temperature by using liquid nitrogen as a cold source so as to ensure that the content of nutrient elements in the raw materials is not lost.
The method for airflow superfine grinding in the scheme comprises the following steps: performing superfine grinding treatment on coarse cereal powder obtained by ultralow-temperature grinding by adopting airflow superfine grinding equipment, taking normal-temperature clean dry air as a grinding working medium, and obtaining the micronized powder with the granularity of 140-180 meshes, wherein the grinding pressure is 0.6-0.8 MPa.
Has the advantages that:
1. according to the invention, the germinated coarse cereals are obtained by performing germination treatment on the coarse cereals, so that the content of polyphenol active components in the coarse cereals is increased, and the digestibility of the coarse cereals is improved.
2. The invention adopts low-temperature vacuum curing and vacuum freeze drying technology to obtain pre-cured and dried coarse cereals, low-temperature treatment is adopted in the whole curing and drying process, the loss of nutrient components such as polyphenol in the coarse cereals is kept to the maximum extent, and the obtained coarse cereal nutritional powder has high content of polyphenol active components.
3. According to the invention, a crushing mode combining ultra-low temperature crushing and airflow ultra-fine crushing is adopted, so that low-temperature treatment of coarse cereals in the whole crushing process is ensured, nutritional ingredients such as polyphenol in the coarse cereals are retained to the maximum extent, and a coarse cereal powder product which can be quickly dissolved, has good taste and is easy to absorb is obtained.
Fourthly, explanation of the attached drawings:
FIG. 1 is a block flow diagram of the present invention.
The fifth embodiment is as follows:
the invention is further described below with reference to the accompanying drawings:
example 1:
the high-activity coarse cereal nutritional powder rich in polyphenol is prepared by soaking at least more than one coarse cereals for germination to obtain germinated coarse cereals; then, performing low-temperature vacuum curing and vacuum freeze drying treatment on the germinated coarse cereals to obtain pre-cured and dried germinated coarse cereals; then mixing different types of pre-cured and dried germinated coarse cereals, and carrying out ultra-low temperature crushing and airflow ultra-micro crushing to finally obtain the high-activity coarse cereal nutritional powder rich in polyphenol, wherein the retention rate of polyphenol components in the coarse cereal nutritional powder is 85-93%, and the specific steps are as follows with reference to figure 1:
raw material screening and cleaning
1. Screening
Selecting high-quality coarse cereal raw materials, and removing broken stones, soil blocks, foreign seeds, wormhole grains, imperfect grains, class cases and the like in the raw materials.
In each embodiment, the coarse cereals include, but are not limited to, buckwheat, oat, black rice, barley, sorghum, coix seed, millet, mung bean, black bean, kidney bean, pea, red bean, and the like in parts by weight.
2. Cleaning of
Washing with tap water, washing with purified water, and draining off water.
II) preparation of germinated miscellaneous cereals
3. Soaking
Soaking the cleaned coarse cereals in purified water at 25-30 ℃ for 0.5h at a ratio of 1:6 to control the water content of the coarse cereal raw material to be 25-50%, and completely draining off excessive water after soaking.
4. Germination
And (3) germinating the soaked coarse cereal beans at 25-30 ℃ for 20h to obtain germinated coarse cereals with the germination length of 0.5-2 mm.
In the prior art, most coarse cereal powder products are processed and treated by directly taking coarse cereals as raw materials, the coarse cereals are not germinated, and physiological active substances such as polyphenol and the like are enriched due to embryo germination and enzyme system activation in the coarse cereal germination process, so that the content of the physiological active substances is improved; meanwhile, the germination treatment can reduce the fiber content and is easy to digest and absorb.
Thirdly) pre-cured dried germinated coarse cereals
5. Vacuum low temperature curing
Curing the germinated coarse cereals for 25min at 50 ℃ under the vacuum degree of-0.05 pa, wherein the gelatinization degree of the cured coarse cereals is more than or equal to 85%.
Because the normal-pressure high-temperature cooking treatment can cause the loss and the reduction of the effect of polyphenol active components in the coarse cereals, the negative-pressure low-temperature treatment is adopted in the curing process, and the boiling point of water is reduced under a certain negative-pressure condition.
6. Dispersing
Dispersing the cured coarse cereal material with the adhesive to facilitate later drying treatment.
7. Vacuum freeze drying
Freezing the cooked coarse cereals and beans at-10 deg.C for 3 hr, and vacuum freeze drying to water content below 8%.
Compared with the high-temperature baking and frying in the prior art, the freeze drying adopted in the embodiment can cause the active components such as polyphenol in the coarse cereals to be lost or decomposed at high temperature through high-temperature treatment. In the embodiment, freeze drying is adopted, so that the nutritional ingredients such as polyphenol in the coarse cereals are kept from losing to the maximum extent.
Fourthly) crushing
8. Mixing
The pre-cured and dried coarse cereals are blended according to nutritional efficacy and different nutritional requirements, and nut and seed food materials such as walnut kernels, pine nuts, pumpkin seeds and the like are added to obtain coarse cereal nutritional powder with different formulas, so that the coarse cereal nutritional powder is suitable for a wider range of people.
9. Pulverizing at ultralow temperature
And crushing the mixed coarse cereal ingredients at the ultralow temperature of-196 ℃ to obtain powder with the particle size of 100 meshes.
The cryogenic grinder is used for grinding, liquid nitrogen is used as a cold source, and embrittlement grinding of materials is achieved at low temperature, so that the content of nutrient elements in the raw materials is not lost.
10. Air flow ultramicro pulverization
And further carrying out superfine grinding treatment on the coarse cereal powder obtained by ultralow-temperature grinding by adopting airflow superfine grinding equipment. Clean and dry air at normal temperature is used as a grinding working medium, the grinding pressure is 0.6MPa, and the granularity of the obtained micronized powder is 140 meshes.
After the material is crushed at the ultralow temperature, the particle size of the material is relatively large, and the material is easy to absorb moisture after contacting with air, so that the normal-temperature airflow ultramicro crushing treatment is further adopted, not only can the powder particles be further reduced, the dissolubility and the digestibility be improved, but also the powder can be dried, and the moisture absorption phenomenon is prevented.
Five) high activity coarse cereal nutritional powder
The retention rate of polyphenol components of different coarse cereal raw materials processed by the method is 85-93%. The prepared coarse cereal nutritional powder has high polyphenol active component content and less active component loss in the processing process, is high-activity coarse cereal composite nutritional powder rich in polyphenol, has high nutritional value, is easy to digest and absorb, can be quickly dissolved by adding water, and has good taste.
Example 2:
the high-activity coarse cereal nutritional powder rich in polyphenol is prepared by soaking at least more than one coarse cereals for germination to obtain germinated coarse cereals; then, performing low-temperature vacuum curing and vacuum freeze drying treatment on the germinated coarse cereals to obtain pre-cured and dried germinated coarse cereals; mixing different types of pre-cured and dried germinated coarse cereals, and then carrying out ultra-low temperature crushing and airflow ultra-micro crushing to finally obtain the high-activity coarse cereal nutritional powder rich in polyphenol, wherein the retention rate of polyphenol components in the coarse cereal nutritional powder is 85-93%, and the specific steps are as follows:
raw material screening and cleaning
1. Screening
Selecting high-quality coarse cereal raw materials, and removing broken stones, soil blocks, foreign seeds, wormhole grains, imperfect grains, class cases and the like in the raw materials.
In each embodiment, the coarse cereals include, but are not limited to, buckwheat, oat, black rice, barley, sorghum, coix seed, millet, mung bean, black bean, kidney bean, pea, red bean, and the like in parts by weight.
2. Cleaning of
Washing with tap water, washing with purified water, and draining off water.
II) preparation of germinated miscellaneous cereals
3. Soaking
Soaking the cleaned coarse cereals in purified water at 25-30 ℃ for 5h at a ratio of 1:1 to control the water content of the coarse cereal raw material to be 25-50%, and completely draining off excessive water after soaking.
4. Germination
And (3) germinating the soaked coarse cereal and mixed beans at 25-30 ℃ for 30h to obtain germinated coarse cereals with the germination length of 0.5-2 mm.
Thirdly) pre-cured dried germinated coarse cereals
5. Vacuum low temperature curing
Curing the germinated coarse cereals for 40min at 70 ℃ under the vacuum degree of-0.1 pa, wherein the gelatinization degree of the cured coarse cereals is more than or equal to 85%.
6. Dispersing
Dispersing the cured coarse cereal material with the adhesive to facilitate later drying treatment.
7. Vacuum freeze drying
Freezing the cooked coarse cereals and beans at-18 deg.C for 6h, and vacuum freeze drying to water content below 8%.
Fourthly) crushing
8. Mixing
The pre-cured and dried coarse cereals are blended according to nutritional efficacy and different nutritional requirements, and nut and seed food materials such as walnut kernels, pine nuts, pumpkin seeds and the like are added to obtain coarse cereal nutritional powder with different formulas, so that the coarse cereal nutritional powder is suitable for a wider range of people.
9. Pulverizing at ultralow temperature
And crushing the mixed coarse cereal ingredients at the ultralow temperature of-196 ℃ to obtain powder with the particle size of 140 meshes.
The cryogenic grinder is used for grinding, liquid nitrogen is used as a cold source, and embrittlement grinding of materials is achieved at low temperature, so that the content of nutrient elements in the raw materials is not lost.
10. Air flow ultramicro pulverization
And further carrying out superfine grinding treatment on the coarse cereal powder obtained by ultralow-temperature grinding by adopting airflow superfine grinding equipment. Clean and dry air at normal temperature is used as a grinding working medium, the grinding pressure is 0.8MPa, and the granularity of the obtained micronized powder is 180 meshes.
After the material is crushed at the ultralow temperature, the particle size of the material is relatively large, and the material is easy to absorb moisture after contacting with air, so that the normal-temperature airflow ultramicro crushing treatment is further adopted, not only can the powder particles be further reduced, the dissolubility and the digestibility be improved, but also the powder can be dried, and the moisture absorption phenomenon is prevented.
Five) high activity coarse cereal nutritional powder
The retention rate of polyphenol components of different coarse cereal raw materials processed by the method is 85-93%. The prepared coarse cereal nutritional powder has high polyphenol active component content and less active component loss in the processing process, is high-activity coarse cereal composite nutritional powder rich in polyphenol, has high nutritional value, is easy to digest and absorb, can be quickly dissolved by adding water, and has good taste.
Example 3:
the high-activity coarse cereal nutritional powder rich in polyphenol is prepared by soaking at least more than one coarse cereals for germination to obtain germinated coarse cereals; then, performing low-temperature vacuum curing and vacuum freeze drying treatment on the germinated coarse cereals to obtain pre-cured and dried germinated coarse cereals; mixing different types of pre-cured and dried germinated coarse cereals, and then carrying out ultra-low temperature crushing and airflow ultra-micro crushing to finally obtain the high-activity coarse cereal nutritional powder rich in polyphenol, wherein the retention rate of polyphenol components in the coarse cereal nutritional powder is 85-93%, and the specific steps are as follows:
raw material screening and cleaning
1. Screening
Selecting high-quality coarse cereal raw materials, and removing broken stones, soil blocks, foreign seeds, wormhole grains, imperfect grains, class cases and the like in the raw materials.
In each embodiment, the coarse cereals include, but are not limited to, buckwheat, oat, black rice, barley, sorghum, coix seed, millet, mung bean, black bean, kidney bean, pea, red bean, and the like in parts by weight.
2. Cleaning of
Washing with tap water, washing with purified water, and draining off water.
II) preparation of germinated miscellaneous cereals
3. Soaking
Soaking the cleaned coarse cereals in purified water at 25-30 ℃ for 15h at a ratio of 1:3 to control the water content of the coarse cereal raw material to be 25-50%, and completely draining off excessive water after soaking.
4. Germination
And (3) germinating the soaked coarse cereal beans at 25-30 ℃ for 48h to obtain germinated coarse cereals with the germination length of 0.5-2 mm.
Thirdly) pre-cured dried germinated coarse cereals
5. Vacuum low temperature curing
The germinated coarse cereals are cured for 60min at 50 ℃ under the condition of vacuum degree of-0.1 pa, and the gelatinization degree of the cured coarse cereals is more than or equal to 85%.
6. Dispersing
Dispersing the cured coarse cereal material with the adhesive to facilitate later drying treatment.
7. Vacuum freeze drying
Freezing the cooked coarse cereals and beans at-24 deg.C for 8 hr, and vacuum freeze drying to water content below 8%.
Fourthly) crushing
8. Mixing
The pre-cured and dried coarse cereals are blended according to nutritional efficacy and different nutritional requirements, and nut and seed food materials such as walnut kernels, pine nuts, pumpkin seeds and the like are added to obtain coarse cereal nutritional powder with different formulas, so that the coarse cereal nutritional powder is suitable for a wider range of people.
9. Pulverizing at ultralow temperature
And crushing the mixed coarse cereal ingredients at the ultralow temperature of-196 ℃ to obtain powder with the particle size of 140 meshes.
The cryogenic grinder is used for grinding, liquid nitrogen is used as a cold source, and embrittlement grinding of materials is achieved at low temperature, so that the content of nutrient elements in the raw materials is not lost.
10. Air flow ultramicro pulverization
And further carrying out superfine grinding treatment on the coarse cereal powder obtained by ultralow-temperature grinding by adopting airflow superfine grinding equipment. Clean and dry air at normal temperature is used as a grinding working medium, the grinding pressure is 0.8MPa, and the granularity of the obtained micronized powder is 180 meshes.
After the material is crushed at the ultralow temperature, the particle size of the material is relatively large, and the material is easy to absorb moisture after contacting with air, so that the normal-temperature airflow ultramicro crushing treatment is further adopted, not only can the powder particles be further reduced, the dissolubility and the digestibility be improved, but also the powder can be dried, and the moisture absorption phenomenon is prevented.
Five) high activity coarse cereal nutritional powder
The retention rate of polyphenol components of different coarse cereal raw materials processed by the method is 85-93%. The prepared coarse cereal nutritional powder has high polyphenol active component content and less active component loss in the processing process, is high-activity coarse cereal composite nutritional powder rich in polyphenol, has high nutritional value, is easy to digest and absorb, can be quickly dissolved by adding water, and has good taste.

Claims (5)

1. A high-activity coarse cereal nutritional powder rich in polyphenol is characterized in that: the high-activity coarse cereal nutritional powder rich in polyphenol is prepared by soaking at least more than one coarse cereals for germination to obtain germinated coarse cereals; then, performing low-temperature vacuum curing and vacuum freeze drying treatment on the germinated coarse cereals to obtain pre-cured and dried germinated coarse cereals; mixing different types of pre-cured and dried germinated coarse cereals, and performing ultra-low temperature crushing and air flow ultra-micro crushing to finally obtain high-activity coarse cereal nutritional powder rich in polyphenol, wherein the retention rate of polyphenol components in the coarse cereal nutritional powder is 85-93%;
wherein the low-temperature vacuum curing is to cure the germinated coarse cereals for 25-60 min at 50-70 ℃ under the vacuum degree of-0.05-0.1 Mpa, and the gelatinization degree of the aged coarse cereals is more than or equal to 85 percent.
2. The high-activity coarse cereal nutritional powder rich in polyphenol as claimed in claim 1, which is characterized in that the vacuum freeze drying treatment method comprises the following steps: dispersing the coarse cereal material which is cured at low temperature in vacuum and is adhered, freezing for 3-8h at-10 to-24 ℃, and then carrying out vacuum freeze drying until the water content is below 8%.
3. The high-activity coarse cereal nutritional powder rich in polyphenol as claimed in claim 2, is characterized in that: the soaking and germinating treatment method comprises the following steps: soaking the cleaned coarse cereals in purified water at the temperature of 25-30 ℃ for 0.5-15 h at the material-water ratio of 1: 1-1: 6, controlling the water content of the coarse cereal raw materials to be 25-50% after soaking, draining off water, and germinating at 25-30 ℃ for 20-48 h to obtain germinated coarse cereals with the germination length of 0.5-2 mm.
4. The high-activity coarse cereal nutritional powder rich in polyphenol as claimed in claim 3, wherein the high-activity coarse cereal nutritional powder is characterized in that: the method for crushing the pre-cured and dried germinated coarse cereals at the ultra-low temperature after mixing comprises the steps of blending the pre-cured and dried germinated coarse cereals of different types, adding nut and/or seed food materials, crushing at the ultra-low temperature of-196 ℃ to obtain powder with the particle size of 100-140 meshes, crushing by using a cryogenic crusher, and realizing brittle crushing of the materials at the low temperature by using liquid nitrogen as a cold source.
5. The high-activity coarse cereal nutritional powder rich in polyphenol as claimed in claim 4, wherein the high-activity coarse cereal nutritional powder is characterized in that: the airflow superfine grinding method comprises the following steps: performing superfine grinding treatment on coarse cereal powder obtained by ultralow-temperature grinding by adopting airflow superfine grinding equipment, taking normal-temperature clean dry air as a grinding working medium, and obtaining the micronized powder with the granularity of 140-180 meshes, wherein the grinding pressure is 0.6-0.8 MPa.
CN201911215624.4A 2019-12-02 2019-12-02 High-activity coarse cereal nutritional powder rich in polyphenol Pending CN110771801A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
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CN110800928A (en) * 2019-12-02 2020-02-18 北大荒粮食集团有限公司 High-activity coarse cereal nutritional powder
CN111772131A (en) * 2020-07-16 2020-10-16 海南华创槟榔研究院 Areca nut whole powder and preparation method thereof
CN113016991A (en) * 2021-03-24 2021-06-25 黑龙江八一农垦大学 Processing method of low-GI high-activity coarse cereal composite instant nutrition powder
CN113243520A (en) * 2021-04-15 2021-08-13 内蒙古晒能生物科技有限公司 Vegetarian selenium meal powder production system and method
CN113303436A (en) * 2021-05-27 2021-08-27 北大荒粮食集团有限公司 High-activity coarse cereal nutritional powder rich in gamma-aminobutyric acid

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Application publication date: 20200211