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Selenium-enriched rice extract, and preparation method and application thereof

A technology of selenium-enriched rice and extracts, which is applied in the direction of food ingredients, applications, and food science containing natural extracts, can solve the problems of no extraction method and low selenium content, so as to improve tranquility, improve the quality of life, The effect of high yield

Inactive Publication Date: 2019-01-11
西安禾其果商业运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, rice is loved by people because of its fragrant, waxy, delicate and rich nutrition; however, the selenium content of selenium-enriched rice on the market is relatively low and there is no effective extraction method. 25μg / kg

Method used

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  • Selenium-enriched rice extract, and preparation method and application thereof

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preparation example Construction

[0024] The invention provides a kind of preparation method of rice extract, comprises the following steps:

[0025] S1: Wash the selenium-enriched rice, dry it, and crush it. Soak the crushed rice in water, add amylase and protease, ultrasonically treat it for 15-30 minutes, shake it at constant temperature for 2-4 hours, and centrifuge at a speed of 1500-2000 rpm After 3-5 minutes, the supernatant was collected to obtain the enzymatic hydrolyzed slurry. Wherein, the selenium content of the selenium-enriched rice is 30-100 μg / kg, and preferably 60-80 μg / kg; the mass ratio of rice, amylase and protease is 100: (5-15): (2-5) .

[0026] S2: Mix the enzymatically hydrolyzed slurry and compound solution evenly according to the mass ratio of 1: (0.1-10), and then perform microwave extraction for 20-60 minutes at a power of 1.5-2.5kW and a temperature of 50-65°C. Filter and collect the filtrate. Wherein, the raw material components of the compound liquid include: 1-3 parts by weig...

Embodiment 1

[0031] The present embodiment provides a kind of preparation method of rice extract, comprises the following steps:

[0032] S1: Wash the selenium-enriched rice, dry it, and crush it. Soak the crushed rice in water, then add amylase and protease, sonicate for 30 minutes, shake at constant temperature for 2 hours, centrifuge at 2000rpm for 3 minutes, and collect the supernatant , that is, the slurry after enzymolysis is obtained. Among them, the selenium content of selenium-enriched rice is 80 μg / kg; the mass ratio of rice, amylase and protease is 100:5:5.

[0033] S2: Mix the enzymolyzed slurry and compound solution evenly at a mass ratio of 1:1, then extract with microwaves for 60 minutes at a power of 2.5kW and a temperature of 50°C, filter and collect the filtrate. Wherein, the raw material components of the compound liquid include: 1 weight part of citric acid, 0.8 weight part of sodium chloride, 1 weight part of green tea and 100 weight parts of water in parts by weight....

Embodiment 2

[0036] The present embodiment provides a kind of preparation method of rice extract, comprises the following steps:

[0037] S1: Wash the selenium-enriched rice, dry it and crush it, soak the crushed rice in water, then add amylase and protease, sonicate for 15 minutes, then shake at constant temperature for 4 hours, centrifuge at 1500rpm for 5 minutes, and collect the supernatant , that is, the slurry after enzymolysis is obtained. Among them, the selenium content of selenium-enriched rice is 60 μg / kg; the mass ratio of rice, amylase and protease is 100:15:2.

[0038] S2: Mix the enzymatic hydrolyzed slurry and compound solution evenly at a mass ratio of 1:10, then extract by microwave at a power of 1.5kW and a temperature of 65°C for 20min, filter and collect the filtrate. Wherein, the raw material components of the compound liquid include: 3 parts by weight of citric acid, 0.1 parts by weight of sodium chloride, 2 parts by weight of green tea and 100 parts by weight of wat...

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Abstract

The invention relates to a selenium-enriched rice extract, and a preparation method and application thereof. The preparation method of the selenium-enriched rice extract comprises the following steps:S1, thoroughly washing rice, air-drying the washed rice, crushing the dried rice, soaking the crushed rice with water, and carrying out enzymatic hydrolysis so as to obtain hydrolyzed pulp; S2, uniformly mixing the hydrolyzed pulp with a compound solution, carrying out microwave extraction and filtration, and collecting the filtrate; and S3, performing vacuum decompressed concentration on the filtrate so as to obtain the rice extract. The selenium-enriched rice extract provided by the invention has excellent functions of resisting oxidation, reducing blood lipid, scavenging free radicals, enhancing immunity, calming and tranquilizing the mind; moreover, the selenium-enriched rice extract is free of addition of any artificially synthesized components, so that the selenium-enriched rice extract is safe as well as free of toxic and side effects. The selenium-enriched rice extract is capable of effectively alleviating sub-health state of the body so as to improve work efficiency and lifequality of people. In addition, the extraction method adopted by the preparation method of the selenium-enriched rice extract is capable of fully releasing functional components from selenium-enrichedrice under the premise of preserving active ingredients of the raw materials to the maximum extent; and thus, the finally prepared selenium-enriched rice extract has excellent effects.

Description

technical field [0001] The invention relates to the technical field of natural product extraction, in particular to a selenium-enriched rice extract and its preparation method and application. Background technique [0002] Selenium is an essential trace element for the human body. It has functions such as anti-cancer, anti-oxidation, anti-aging, and improving immunity. Studies have shown that selenium amino acids can fight cancer; selenocysteine ​​can participate in protein synthesis; selenomethionine can replace methionine and be combined in proteins. If the human body's daily intake of selenium is insufficient or excessive, it will cause harm to health. Food is rich in protein, vitamins, minerals and other nutrients, which are the necessities of people's survival and the main channel for the human body to absorb selenium. [0003] As we all know, selenium in agricultural products is divided into two categories: inorganic selenium and organic selenium: the former includes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L7/104A23L33/105A61K36/899A61P39/06A61P3/06A61P37/04A61P25/20A61K131/00
CPCA23V2002/00A61K36/899A61K2236/19A61K2236/333A23L7/107A23L33/105A61P3/06A61P25/20A61P37/04A61P39/06A23V2200/3262A23V2200/324A23V2200/30A23V2250/21
Inventor 车晓军
Owner 西安禾其果商业运营有限公司
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