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Method for preparing germinated brown rice by utilizing repeated mild drought stress method

A technology of drought stress and germinated brown rice, which is applied in the field of rice intensive processing, can solve the problems that the enrichment technology has not been disclosed, and achieve the effect of improving the germination rate

Inactive Publication Date: 2011-02-09
翟玮玮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The above two types of substances are good functional factors for scavenging free radicals and improving human health, but the technology of enriching these two types of substances in germinated brown rice has not been disclosed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of stress solution The stress solution is composed of 10g / L polyethylene glycol, 300mg / L calcium nitrate tetrahydrate, 150mg / L potassium nitrate, 100mg / L ammonium nitrate, 60mg / L potassium dihydrogen phosphate, 40mg / L A dilute solution composed of dipotassium hydrogen phosphate, 60mg / L magnesium sulfate heptahydrate, 5mg / L sodium chloride and water, and the pH value of the nutrient solution is adjusted to 6.0;

[0029] (2) Drought stress The husked rice seeds were soaked in a stress solution at a temperature of 20° C. for 10 hours, and air was injected into it at the same time.

[0030] (3) High-temperature accelerating germination Place the soaked seeds in a constant temperature accelerating germination room with a temperature of 30° C. and a relative humidity of 85% for 10 hours in the dark;

[0031] (4) Repeat drought stress Repeat steps (2), (3) five times;

[0032] (5) Drying The germinated brown rice was washed and dried at a low temperature of 30...

Embodiment 2

[0034] (1) Preparation of stress solution The stress solution is composed of 100g / L polyethylene glycol, 400mg / L calcium nitrate tetrahydrate, 250mg / L potassium nitrate, 60mg / L ammonium nitrate, 40mg / L potassium dihydrogen phosphate, 20mg / L A diluted solution composed of dipotassium hydrogen phosphate, 100mg / L magnesium sulfate heptahydrate, 15mg / L sodium chloride and water, the pH value of the nutrient solution is adjusted to 6.4;

[0035] (2) Drought stress The husked rice seeds were soaked in a stress solution at a temperature of 30° C. for 5 hours, and air was injected into it at the same time.

[0036] (3) High-temperature accelerating germination Place the soaked seeds in a constant temperature accelerating germination room with a temperature of 40° C. and a relative humidity of 95% for 5 hours in the dark;

[0037] (4) Repeat the drought stress Repeat steps (2), (3) three times;

[0038] (5) Drying The germinated brown rice was washed and dried at a low temperature of ...

Embodiment 3

[0040] (1) Preparation of stress solution The stress solution is composed of 50g / L polyethylene glycol, 350mg / L calcium nitrate tetrahydrate, 200mg / L potassium nitrate, 80mg / L ammonium nitrate, 50mg / L potassium dihydrogen phosphate, 30mg / L A dilute solution composed of dipotassium hydrogen phosphate, 80mg / L magnesium sulfate heptahydrate, 10mg / L sodium chloride and water, and the pH value of the nutrient solution is adjusted to 6.2;

[0041] (2) Drought stress The husked rice seeds were soaked in a stress solution at a temperature of 25° C. for 8 hours, and air was injected into it at the same time.

[0042] (3) High-temperature accelerating germination Place the soaked seeds in a constant temperature accelerating germination room with a temperature of 35° C. and a relative humidity of 90% for 8 hours in the dark;

[0043] (4) Repeat drought stress Repeat steps (2), (3) four times;

[0044] (5) Drying The germinated brown rice was washed and dried at a low temperature of 40°C...

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PUM

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Abstract

The invention provides a method for preparing germinated brown rice by utilizing a repeated mild drought stress method. The method is characterized by placing the brown rice into drought stress solution to compel the soluble sugar, free amino acids and active oxygen to be accumulated, activating protective enzymes and phenylalanine ammonia lyase and promoting the amount and activities of superoxide dismutase, hydrogen peroxidase and peroxidase to be increased and polyphenol compounds to be enriched. The method has the following advantages: the method of alternately carrying out repeated and short drought stress and high temperature germination hastening is adopted to prevent excessive active oxygen from harming the cells, thus ensuring the active oxygen to be slowly generated and not only obtaining higher contents of soluble sugars, free amino acids, superoxide dismutase, hydrogen peroxidase, peroxidase and polyphenol compounds but also improving the germination percentage of the brown rice.

Description

(1) Technical field [0001] The invention relates to a method for preparing germinated brown rice, in particular to a method for preparing germinated brown rice by repeated mild drought stress. The invention belongs to the technical field of deep processing of rice. (2) Background technology [0002] Germinated brown rice is a product composed of young sprouts and endosperm with a bran layer after germinating brown rice to a suitable bud length. Currently, research on germinated brown rice is as follows: [0003] In 200580013023.5, a kind of germinated brown rice whose composition at least contains more direct reducing sugars than raw brown rice is disclosed. It has the advantage of improving the flavor and cooking performance of germinated brown rice, but it only contains more reducing sugars and does not realize free Accumulation of amino acids and polyphenols. [0004] In 200910035094.5, a technology for soaking germinated brown rice in a nutrient solution (temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/185A23L7/20
Inventor 翟玮玮
Owner 翟玮玮
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