CN114304500A - Selenium-rich highland barley instant powder and preparation method thereof - Google Patents
Selenium-rich highland barley instant powder and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title abstract description 31
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Abstract
The invention belongs to the technical field of agricultural product development, and particularly relates to selenium-rich highland barley instant powder and a preparation method thereof. The selenium-enriched highland barley instant powder disclosed by the invention takes the selenium-enriched highland barley, buckwheat, red dates, peas, burdock and Chinese yam as effective components, all the raw materials are harmless to human bodies and have no toxic or side effect, and the selenium-enriched highland barley instant powder is beneficial to improving the immunity of human bodies, enhancing the metabolism mechanism and improving the vitality of the human bodies after being eaten daily.
Description
Technical Field
The invention belongs to the technical field of agricultural product development, and particularly relates to selenium-rich highland barley instant powder and a preparation method thereof.
Background
Selenium is a trace element necessary for human and animal health, has biological characteristics of free radical removal, oxidation resistance, aging delay, cancer resistance, immunity enhancement, heavy metal antagonism and the like, has various pharmacological effects of cancer resistance, heart and liver protection, immunity enhancement, aging delay, reproductive function enhancement and the like, is praised as 'vital fire', 'king of cancer resistance' and 'heart guard' by scientists, and the immunity is greatly reduced and the risk of infecting various highly pathogenic viral diseases is obviously increased due to the selenium deficiency of human bodies. In 1988, the Chinese Nutrition society lists trace element selenium as one of dietary nutrients which must be taken by residents in China every day, and recommends that the daily selenium intake is 50-250mg, but the average daily selenium intake of adults in China is only about 36 mg.
Selenium sources of human bodies are mainly ingested by diet, and selenium-rich agricultural and sideline products are effective ways for supplementing selenium elements to human bodies, so that the development of selenium-rich agricultural products is a hot spot field for research and development of scientists. Since selenium is associated with metal sulfides in the earth crust and exists in the form of rocks, although selenium in the rocks cannot be absorbed by crops, the selenium in the rocks can be converted into oxides through weathering, erosion, physical, chemical, microbial and other actions, and then the oxides are washed into soil to form various forms of selenium, such as elemental selenium, organic selenium, selenite, selenate and the like. Selenium in soil can be divided into: selenate, selenite, elemental selenium, and selenide; according to the binding type, the method can be divided into: soluble state and weak adsorption state, exchangeable state, carbonate binding state, iron manganese oxide binding state, organic matter binding state, residue state and the like. Selenium in different valence states and different combination states has different migration and transformation capacities in soil and different effectiveness on plants, so that the effective selenium content in the soil is a key factor determining the selenium content in the plants rather than full selenium. The effectiveness of selenium is influenced by soil total selenium, soil texture, soil pH, Eh, organic matter, etc., wherein soluble, exchangeable and carbonate bound selenium is most effective for crop absorption.
About two thirds of areas in China belong to internationally recognized selenium-deficient areas, wherein nearly one third of areas belong to serious selenium deficiency, so that 70% of people live in the selenium-deficient areas in China, and especially, keshan disease and Kaschin-Beck disease patients in certain areas in Tibet are caused by long-term selenium deficiency in the living areas. According to the investigation of the selenium content in the soil of the Tibet region, the total selenium content in the soil of the Tibet region is low, and the selenium content is regularly distributed in strips. However, in the area of the south of bujiang in Yaluzang, most areas of the south of the mountain, the first line of Yadong county, Baba county, Karma county, Jiangzui county and Lanka county of the selenium-rich area of Chuchu river, and the areas of the Ritudinian county and Zadao county in the Ali area in the west, the total selenium content in the soil is more than twice of the total selenium content in the soil of other areas in Tibet, and the standard of the medium-selenium soil can be achieved. Therefore, the development of selenium-rich products in Tibet areas becomes possible, and on one hand, the selenium nutrition level of Tibetan residents can be safely and effectively improved; on the other hand, the development of selenium-rich agricultural and livestock products is increased under the ecological environment of the clean soil in Tibet, and the product quality and the market competitiveness are improved.
However, the current investigation aiming at the total selenium content in the soil of the Tibet region is not accurate enough to find out the regional distribution position of the selenium-containing soil in the main agricultural region of the Tibet, and on the other hand, the unique geographical environment and climate of the Tibet region also influence the effective selenium content in the soil. Therefore, how to effectively improve the content and the state of effective selenium in the soil in the Tibet region and further develop selenium-rich agricultural products with Tibet characteristics can provide solid technical support for the construction of plateau ecological selenium cereals in Tibet and has important practical significance and necessity for accelerating the industrialization process of Tibet farming and animal husbandry. Therefore, the development of different selenium-rich highland barley agricultural products has positive significance for promoting the development of agricultural products in Tibet regions.
Disclosure of Invention
Therefore, the invention aims to provide the selenium-enriched highland barley instant powder and further provides a preparation method thereof.
In order to solve the technical problems, the selenium-enriched highland barley instant powder comprises the following components in parts by weight: 30-80 parts of selenium-enriched highland barley, 20-30 parts of buckwheat, 12-20 parts of red dates, 15-20 parts of peas, 3-8 parts of burdock and 5-12 parts of Chinese yam.
Specifically, the selenium-rich highland barley instant powder comprises the following components in parts by weight: 50 parts of selenium-enriched highland barley, 25 parts of buckwheat, 15 parts of red date, 18 parts of pea, 5 parts of burdock and 8 parts of Chinese yam.
The invention also discloses a method for preparing the selenium-rich highland barley instant powder, which comprises the following steps:
(1) peeling the dried selenium-enriched highland barley, collecting highland barley endosperm granules, and putting the highland barley endosperm granules into a bulking machine for bulking for later use;
(2) according to the selected proportion, uniformly mixing the selenium-enriched highland barley, buckwheat, red dates, peas, burdock and Chinese yam which are subjected to puffing treatment, adding water for pulping treatment, and collecting pulp;
(3) carrying out vacuum freeze drying on the obtained slurry to obtain mixed powder;
(4) micronizing the obtained mixed powder, and packaging.
Specifically, in the step (1), in the expansion treatment step, the expansion temperature is controlled to be 250-.
Specifically, in the step (2), the amount of the water is 3 to 4 times of the total amount of the raw materials.
Specifically, in the step (2), in the pulping step, the pulping speed is controlled to be 200-400rpm, the temperature of the pulp is controlled to be 40-60 ℃, and the pulping time is 15-20 min.
Specifically, in the step (3), in the vacuum freeze drying step, the freezing temperature is controlled to be-20 to-30 ℃, and the vacuum degree is controlled to be 10-12 Pa.
Specifically, in the step (3), the water content of the mixed powder is controlled to be lower than 5%.
Specifically, in the step (3), in the superfine grinding step, the grinding particle size of the mixed powder is controlled to be 250-300 meshes.
The selenium-rich highland barley instant powder is prepared by the following specific planting method:
(1) land preparation: selecting a planting land block with higher selenium content, deep ploughing and fine harrowing before highland barley planting, and applying a base fertilizer and a selenium activation conditioner;
(2) sowing: before sowing, drying and dressing seeds, and sowing in due time;
(3) topdressing: topdressing is carried out during the period of two leaves and one core of the highland barley and the period of jointing, and topdressing is carried out outside roots at the same time;
(4) irrigation: reasonable irrigation is carried out in the seedling emergence period, the flowering period and the irrigation channel of the highland barley;
(5) and (6) harvesting.
The selenium-activated conditioner comprises a mixture of modified residual activated sludge, an activated solid matrix and an EM microbial inoculum.
Specifically, the mass ratio of the modified residual activated sludge to the activated solid material to the EM microbial inoculum is 3-8: 10: 0.5-1.
Specifically, the modification method of the modified excess activated sludge comprises the following steps: and adding the residual activated sludge into an electrolyte solution containing ionic liquid, carrying out hydrothermal electrolyte reaction, and collecting the discharged activated sludge to obtain the activated sludge.
Specifically, the electrolyte solution comprises a soluble calcium salt solution; preferably, the electrolyte solution comprises a calcium chloride solution;
specifically, the concentration of the electrolyte solution is 30-80 mmol/L.
Specifically, the ionic liquid comprises choline chloride ionic liquid;
specifically, in the electrolyte solution, the concentration of the ionic liquid is 50-100 mmol/L.
Specifically, the temperature of the hydrothermal electrolyte reaction step is 50-80 ℃, and the pressure is normal pressure.
Specifically, the solid matrix comprises a mixture of human and animal excreta, citric acid residues, nut shell powder, egg shell powder and highland barley bran.
Specifically, the mass ratio of the human and animal excreta, the citric acid residues, the nut shell powder, the egg shell powder and the highland barley bran is 1-3: 3-8: 2-4: 2-8: 1-5.
Preferably, the mass ratio of the human and animal excreta, the citric acid residues, the nut shell powder, the egg shell powder and the highland barley bran is 2: 5: 3: 5: 3.
specifically, the solid matrix is crushed and sieved, and the sieving step is drying by passing through a 80-100-mesh sieve.
Specifically, the nut shell powder comprises walnut shell powder and/or Chinese chestnut shell powder.
Specifically, the application amount of the selenium activation conditioner is 30-50 kg/mu.
The selenium-enriched highland barley instant powder disclosed by the invention takes the selenium-enriched highland barley, buckwheat, red dates, peas, burdock and Chinese yam as effective components, all the raw materials are harmless to human bodies and have no toxic or side effect, and the selenium-enriched highland barley instant powder is beneficial to improving the immunity of human bodies, enhancing the metabolism mechanism and improving the vitality of the human bodies after being eaten daily.
The planting method of the selenium-enriched highland barley of the invention activates the selenium element of the planting soil by applying the selected selenium activation conditioner in the soil before the crops are planted on the basis of the traditional highland barley planting method, and the conditioner for promoting the selenium activation of the soil, human and animal excreta, citric acid residues, nut shell powder, egg shell powder and highland barley bran are taken as solid substrates, the activity of residual activated sludge treated by hydrothermal electrolyte reaction and the improvement performance of EM microbial inoculum on soil are taken as auxiliary materials, can effectively improve the property of planting soil, convert selenium element in the soil into effective selenium which is easier to absorb, the activation of selenium element in the soil can be realized, the effective selenium content in the soil is increased, the selenium absorption of highland barley crops is promoted to a certain extent, the selenium-rich crops are easier to plant, the selenium content of the planted crops is effectively improved, and the conditioner is rich in various nutritional ingredients and is beneficial to improving the yield of the planted crops.
Detailed Description
Preparation example 1
The selenium activated conditioner in the preparation example comprises the following components in percentage by mass: 10: 0.8 of a mixture of modified excess activated sludge, activated solid substrate and EM inoculum; wherein,
the modification method of the modified residual activated sludge comprises the following steps: placing the residual activated sludge with the water content of more than 90% in a jacket enamel reaction kettle, adding a calcium chloride solution with the concentration of 50mmol/L as an electrolyte solution (the electrolyte solution contains choline chloride with the concentration of 80 mmol/L), fully and uniformly mixing, controlling the hydrothermal temperature to be 60 ℃, carrying out hydrothermal electrolyte reaction for 2 hours, and collecting the activated sludge discharged from the reaction kettle;
the solid matrix comprises a mixture of 2: 5: 3: 5: 3, crushing the mixed solid matrix, and sieving the crushed solid matrix by a sieve of 80 to 100 meshes to obtain the mixture of human and animal excrement, citric acid residues, walnut shell powder, egg shell powder and highland barley bran;
the EM microbial inoculum is EM stock solution.
The planting method of the selenium-rich highland barley in the preparation example comprises the following steps:
(1) land preparation: selecting a planting land block with good irrigation conditions, proper fertility and ideal selenium content, deep ploughing and fine harrowing before planting, adding the selenium activation conditioner into soil of the planting land block according to the dosage of 30 kg/mu, and applying a base fertilizer according to a conventional planting mode, wherein the application dosage per mu of the base fertilizer is as follows: 1800kg of organic fertilizer, 5kg of urea and 30 kg/mu of potassium sulfate are completely applied into soil for soil preparation;
(2) sowing: selecting high-quality highland barley seeds, removing mildew and impurities, drying the seeds in the sun, and carrying out seed dressing treatment with a conventional dose by using 50% carbendazim wettable powder; sowing in late March, wherein machine-row sowing is adopted for sowing, the row spacing is controlled to be 20cm, the sowing depth is controlled to be about 5cm, and the sowing quantity per mu is controlled to be about 12 kg;
(3) topdressing: weeding and watering are carried out during the two-leaf one-heart period of the highland barley, and 5 kg/mu of urea is applied; in the period of highland barley jointing, 5 kg/mu of urea and 3 kg/mu of potassium sulfate are applied; and carrying out topdressing outside roots at a proper period, and properly topdressing 2 wt% of boron fertilizer and 1 wt% of monopotassium phosphate for spraying;
(4) irrigation: reasonable irrigation is carried out in the seedling emergence period, the flowering period and the irrigation channel of the highland barley; the watering amount is not suitable for one-time transition, a small amount of water and fertilizer are properly controlled in the early stage of jointing, so that the surface layer of the soil is in a drier state, the soil is favorable for the consolidation of the basal internodes, and the anti-falling capability is enhanced;
(5) and (6) harvesting at proper time.
Preparation example 2
The selenium activated conditioner in the preparation example comprises the following components in percentage by mass: 10: 1, a mixture of modified excess activated sludge, activated solid matrix and EM microbial inoculum; wherein,
the modification method of the modified residual activated sludge comprises the following steps: placing the residual activated sludge with the water content of more than 90% in a jacket enamel reaction kettle, adding a calcium chloride solution with the concentration of 30mmol/L as an electrolyte solution (the electrolyte solution contains choline chloride with the concentration of 100 mmol/L), fully and uniformly mixing, controlling the hydrothermal temperature to be 50 ℃ to perform hydrothermal electrolyte reaction for 2 hours, and collecting the activated sludge discharged from the reaction kettle to obtain the activated sludge;
the solid matrix comprises a mixture of 1: 8: 2: 8: 1, crushing the mixed solid matrix, and sieving the crushed solid matrix by a sieve of 80-100 meshes to obtain the mixture of human and animal excrements, citric acid residues, walnut shell powder, egg shell powder and highland barley bran;
the EM microbial inoculum is EM stock solution.
The planting method of the selenium-rich highland barley in the preparation example comprises the following steps:
(1) land preparation: selecting a planting land block with good irrigation conditions, proper fertility and ideal selenium content, deep ploughing and fine harrowing before planting, adding the selenium activation conditioner into soil of the planting land block according to the dosage of 30 kg/mu, and applying a base fertilizer according to a conventional planting mode, wherein the application dosage per mu of the base fertilizer is as follows: 1800kg of organic fertilizer, 5kg of urea and 30 kg/mu of potassium sulfate are completely applied into soil for soil preparation;
(2) sowing: selecting high-quality highland barley seeds, removing mildew and impurities, drying the seeds in the sun, and carrying out seed dressing treatment with a conventional dose by using 50% carbendazim wettable powder; sowing in late March, wherein machine-row sowing is adopted for sowing, the row spacing is controlled to be 20cm, the sowing depth is controlled to be about 5cm, and the sowing quantity per mu is controlled to be about 12 kg;
(3) topdressing: weeding and watering are carried out during the two-leaf one-heart period of the highland barley, and 5 kg/mu of urea is applied; in the period of highland barley jointing, 5 kg/mu of urea and 3 kg/mu of potassium sulfate are applied; and carrying out topdressing outside roots at a proper period, and properly topdressing 2 wt% of boron fertilizer and 1 wt% of monopotassium phosphate for spraying;
(4) irrigation: reasonable irrigation is carried out in the seedling emergence period, the flowering period and the irrigation channel of the highland barley; the watering amount is not suitable for one-time transition, a small amount of water and fertilizer are properly controlled in the early stage of jointing, so that the surface layer of the soil is in a drier state, the soil is favorable for the consolidation of the basal internodes, and the anti-falling capability is enhanced;
(5) and (6) harvesting at proper time.
Preparation example 3
The selenium activated conditioner in the preparation example comprises the following components in percentage by mass: 10: 0.5 of a mixture of modified excess activated sludge, activated solid substrate and EM inoculum; wherein,
the modification method of the modified residual activated sludge comprises the following steps: placing the residual activated sludge with the water content of more than 90% in a jacket enamel reaction kettle, adding a calcium chloride solution with the concentration of 80mmol/L as an electrolyte solution (the electrolyte solution contains choline chloride with the concentration of 50 mmol/L), fully and uniformly mixing, controlling the hydrothermal temperature to be 80 ℃ to perform hydrothermal electrolyte reaction for 2 hours, and collecting the activated sludge discharged from the reaction kettle to obtain the activated sludge;
the solid matrix comprises a mixture of 3: 3: 4: 2: 5, mixing human and animal excrements, citric acid residues, Chinese chestnut shell powder, egg shell powder and highland barley bran, crushing the mixed solid matrix, and sieving the crushed solid matrix by a sieve of 80-100 meshes to obtain the product;
the EM microbial inoculum is EM stock solution.
The planting method of the selenium-rich highland barley in the preparation example comprises the following steps:
(1) land preparation: selecting a planting land block with good irrigation conditions, proper fertility and ideal selenium content, deep ploughing and fine harrowing before planting, adding the selenium activation conditioner into soil of the planting land block according to the dosage of 30 kg/mu, and applying a base fertilizer according to a conventional planting mode, wherein the application dosage per mu of the base fertilizer is as follows: 1800kg of organic fertilizer, 5kg of urea and 30 kg/mu of potassium sulfate are completely applied into soil for soil preparation;
(2) sowing: selecting high-quality highland barley seeds, removing mildew and impurities, drying the seeds in the sun, and carrying out seed dressing treatment with a conventional dose by using 50% carbendazim wettable powder; sowing in late March, wherein machine-row sowing is adopted for sowing, the row spacing is controlled to be 20cm, the sowing depth is controlled to be about 5cm, and the sowing quantity per mu is controlled to be about 12 kg;
(3) topdressing: weeding and watering are carried out during the two-leaf one-heart period of the highland barley, and 5 kg/mu of urea is applied; in the period of highland barley jointing, 5 kg/mu of urea and 3 kg/mu of potassium sulfate are applied; and carrying out topdressing outside roots at a proper period, and properly topdressing 2 wt% of boron fertilizer and 1 wt% of monopotassium phosphate for spraying;
(4) irrigation: reasonable irrigation is carried out in the seedling emergence period, the flowering period and the irrigation channel of the highland barley; the watering amount is not suitable for one-time transition, a small amount of water and fertilizer are properly controlled in the early stage of jointing, so that the surface layer of the soil is in a drier state, the soil is favorable for the consolidation of the basal internodes, and the anti-falling capability is enhanced;
(5) and (6) harvesting at proper time.
Comparative example 1
The planting method of the selenium-enriched highland barley in the comparative example is the same as that in the preparation example 1, and the difference is only that in the preparation of the selenium activation conditioner, the residual activated sludge is directly mixed with the solid matrix and the EM microbial inoculum without the step of hydrothermal electrolyte reaction treatment.
Comparative example 2
The planting method of the selenium-enriched highland barley in the comparative example is the same as that in the preparation example 1, and the difference is only that in the preparation of the selenium activation conditioner, the electrolyte solution does not contain choline chloride in the hydrothermal electrolyte reaction.
Comparative example 3
The planting method of the selenium-enriched highland barley in the comparative example is the same as that in the preparation example 1, and the difference is that the preparation of the selenium activation conditioner does not contain the EM microbial inoculum.
Comparative example 4
The planting method of the selenium-enriched highland barley in the comparative example is the same as that in the preparation example 1, and the difference is that the selenium activation conditioner is not added in the planting process.
Examples of the experiments
Respectively selecting 5 planting plots with basically similar soil quality, and detecting the average selenium content of the soil to be 0.38mg/kg and the effective selenium content to be 85.9 mug/kg through multiple points.
Highland barley was planted according to the planting method described in example 1 and comparative examples 1-4.
After harvesting the highland barley, the total selenium content, the effective selenium content in the soil and the selenium content in the dried highland barley malt were respectively tested and recorded in the following table 1.
Table 1 shows the results of the determination of selenium content in soil and highland barley treated by the selenium activation method
| Numbering | Total selenium content (μ g/kg) | Effective selenium content (μ g/kg) | Highland barley malt selenium content (mg/kg) |
| Example 1 | 48.7 | 15.5 | 393.1 |
| Comparative example 1 | 133.5 | 17.9 | 264.7 |
| Comparative example 2 | 99.2 | 15.4 | 291.6 |
| Comparative example 3 | 70.3 | 22.6 | 338.8 |
| Comparative example 4 | 227.1 | 19.6 | 100.9 |
As can be seen from the data in the table, the selenium activating method for the planting soil can activate the selenium in the soil by applying the selected selenium activating conditioner in the soil before planting the crops, so that the content of the effective selenium in the soil is effectively increased, the selenium absorption of the highland barley crops is promoted to a certain extent, and the selenium content of the highland barley is also increased.
Example 1
The selenium-rich highland barley instant powder comprises the following components in parts by weight: 30 parts of selenium-enriched highland barley, 30 parts of buckwheat, 12 parts of red date, 20 parts of pea, 3 parts of burdock and 12 parts of Chinese yam.
The preparation method of the selenium-rich highland barley instant powder comprises the following steps:
(1) peeling dried selenium-rich semen Avenae Nudae, collecting semen Avenae Nudae embryo emulsion, and puffing at 280 deg.C and 1.2MPa for 5-10 min;
(2) according to the selected proportion, uniformly mixing the selenium-enriched highland barley, buckwheat, red dates, peas, burdock and Chinese yam which are subjected to puffing treatment, adding water which is 4 times of the total weight of the materials, performing pulping treatment, controlling the pulping speed to be 300rpm, controlling the temperature of the pulp to be 50 ℃ and the pulping time to be 15-20min, and collecting the pulp;
(3) carrying out vacuum freeze drying on the obtained slurry, controlling the freezing temperature to be-30 ℃ and the vacuum degree to be 10-12Pa, and obtaining mixed powder with the water content of less than 5%;
(4) micronizing the obtained mixed powder by an airflow mill to obtain the powder with the particle size of 250-300 meshes, and packaging.
Example 2
The selenium-rich highland barley instant powder comprises the following components in parts by weight: 80 parts of selenium-enriched highland barley, 20 parts of buckwheat, 20 parts of red date, 15 parts of pea, 8 parts of burdock and 5 parts of Chinese yam.
The preparation method of the selenium-rich highland barley instant powder comprises the following steps:
(1) peeling dried selenium-rich semen Avenae Nudae, collecting semen Avenae Nudae embryo emulsion, and puffing at 280 deg.C and 1.2MPa for 5-10 min;
(2) according to the selected proportion, uniformly mixing the selenium-enriched highland barley, buckwheat, red dates, peas, burdock and Chinese yam which are subjected to puffing treatment, adding water which is 4 times of the total weight of the materials, performing pulping treatment, controlling the pulping speed to be 300rpm, controlling the temperature of the pulp to be 50 ℃ and the pulping time to be 15-20min, and collecting the pulp;
(3) carrying out vacuum freeze drying on the obtained slurry, controlling the freezing temperature to be-30 ℃ and the vacuum degree to be 10-12Pa, and obtaining mixed powder with the water content of less than 5%;
(4) micronizing the obtained mixed powder by an airflow mill to obtain the powder with the particle size of 250-300 meshes, and packaging.
Example 3
The selenium-rich highland barley instant powder comprises the following components in parts by weight: 50 parts of selenium-enriched highland barley, 25 parts of buckwheat, 15 parts of red date, 18 parts of pea, 5 parts of burdock and 8 parts of Chinese yam.
The preparation method of the selenium-rich highland barley instant powder comprises the following steps:
(1) peeling dried selenium-rich semen Avenae Nudae, collecting semen Avenae Nudae embryo emulsion, and puffing at 280 deg.C and 1.2MPa for 5-10 min;
(2) according to the selected proportion, uniformly mixing the selenium-enriched highland barley, buckwheat, red dates, peas, burdock and Chinese yam which are subjected to puffing treatment, adding water which is 4 times of the total weight of the materials, performing pulping treatment, controlling the pulping speed to be 300rpm, controlling the temperature of the pulp to be 50 ℃ and the pulping time to be 15-20min, and collecting the pulp;
(3) carrying out vacuum freeze drying on the obtained slurry, controlling the freezing temperature to be-30 ℃ and the vacuum degree to be 10-12Pa, and obtaining mixed powder with the water content of less than 5%;
(4) micronizing the obtained mixed powder by an airflow mill to obtain the powder with the particle size of 250-300 meshes, and packaging.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. The selenium-enriched highland barley instant powder is characterized by comprising the following components in parts by weight: 30-80 parts of selenium-enriched highland barley, 20-30 parts of buckwheat, 12-20 parts of red dates, 15-20 parts of peas, 3-8 parts of burdock and 5-12 parts of Chinese yam.
2. The selenium-enriched highland barley instant powder as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 50 parts of selenium-enriched highland barley, 25 parts of buckwheat, 15 parts of red date, 18 parts of pea, 5 parts of burdock and 8 parts of Chinese yam.
3. The method for preparing the selenium-enriched highland barley instant powder as claimed in claim 1 or 2 is characterized by comprising the following steps:
(1) peeling the dried selenium-enriched highland barley, collecting highland barley endosperm granules, and putting the highland barley endosperm granules into a bulking machine for bulking for later use;
(2) according to the selected proportion, uniformly mixing the selenium-enriched highland barley, buckwheat, red dates, peas, burdock and Chinese yam which are subjected to puffing treatment, adding water for pulping treatment, and collecting pulp;
(3) carrying out vacuum freeze drying on the obtained slurry to obtain mixed powder;
(4) micronizing the obtained mixed powder, and packaging.
4. The method for preparing selenium-enriched highland barley instant powder as claimed in claim 3, wherein in the step (1), the puffing temperature is controlled to be 250-.
5. The method for preparing the selenium-enriched highland barley instant powder as claimed in claim 3 or 4, wherein in the step (2), the amount of the water is 3-4 times of the total amount of the raw materials.
6. The method for preparing selenium-enriched highland barley instant powder as claimed in any one of claims 3-5, wherein in the step (2), the pulping speed is controlled at 200-400rpm, the pulp temperature is controlled at 40-60 ℃, and the pulping time is 15-20 min.
7. The method for preparing selenium-enriched highland barley instant powder according to any one of claims 3 to 6, wherein in the step (3), the freezing temperature is controlled to be-20 to-30 ℃ and the vacuum degree is controlled to be 10-12Pa in the vacuum freeze drying step.
8. The method for preparing selenium-enriched highland barley instant powder according to any one of claims 3 to 6, wherein in the step (3), the water content of the mixed powder is controlled to be lower than 5%.
9. The method for preparing selenium-enriched highland barley instant powder as claimed in any one of claims 3-8, wherein in the step (3), the superfine grinding step is performed while controlling the grinding particle size of the mixed powder material to be 250-300 mesh.
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| CN111096404A (en) * | 2019-12-31 | 2020-05-05 | 镇江市智农食品有限公司 | Selenium-rich highland barley milk beverage and preparation method thereof |
| CN112956380A (en) * | 2021-01-29 | 2021-06-15 | 朱宁 | Planting method of highland barley tolerant to high selenium and cultivation method of highland barley malt |
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