CN104381873A - Production method of germinated brown rice - Google Patents

Abstract

The invention provides a method for producing germinated brown rice and relates to the field of food processing. The production method of the germinated brown rice includes the steps of simultaneously enriching selenium and GABA. By adopting the method of the invention to produce germinated brown rice, high-concentration GABA and organic selenium can be enriched at the same time. Soak brown rice in soaking solution containing both L-sodium glutamate and sodium selenite and then germinate. Compared with soaking solution containing only L-sodium glutamate, germinated brown rice is enriched with high concentration of selenium and GABA The concentration is also significantly improved, and unexpected technical effects have been achieved.

Description

A kind of production method of germinated brown rice

technical field

The present invention relates to the field of food processing, in particular to a method for producing germinated brown rice.

Background technique

Rice is one of the most important food crops in my country, with high yield and wide planting area. It is composed of glia (rice husk) and caryopsis (brown rice). Brown rice can be obtained after removing the husk. Brown rice cortex is rich in nutrients, including multivitamins, dietary fiber, minerals, γ-oryzanol, glutathione, linoleic acid, γ-aminobutyric acid, rice bran lipopolysaccharide, etc. In addition to a large amount of nutrients, the cortex of brown rice also contains high levels of crude fiber, phytate and bran wax, which make the taste of brown rice rough and unfavorable for direct consumption. The polished white rice that people eat daily is obtained after finely processing brown rice to remove the cortex of brown rice. Although the ingredients that are not conducive to direct consumption have been removed, a large amount of nutrients have been lost at the same time.

In foreign countries, γ-aminobutyric acid, as a bioactive factor with various physiological functions, has been widely used in nutritional supplements and functional foods. γ-aminobutyric acid (γ-aminobutyric acid, GABA), also known as aminobutyric acid and pipecolic acid, is widely distributed and exists in animals, plants and microorganisms. It is a natural amino acid composed of non-protein, composed of glutamine Acid decarboxylase catalyzes the decarboxylation of glutamic acid to produce sedation, anti-anxiety; lowering blood pressure; treating epilepsy; improving liver function and activating kidney function; improving brain vitality and nerve function; regulating hormones; improving insomnia and mental stability; promoting alcohol metabolism , Efficient weight loss and many other functions.

In addition, selenium is also an essential trace element for the human body. It is known by scientists as the "king of cancer prevention" among the trace elements in the human body. If selenium is lacking, the functions of some important organs of the human body will be out of balance, which may lead to liver cancer, tumors, cardiovascular and cerebrovascular diseases, Keshan disease, reproductive system diseases, diabetes and other diseases. In addition, there is no organ or tissue that can store selenium for a long time in the human body, so only a continuous intake from the diet can meet the human body's demand for selenium. However, most of our country belongs to selenium-deficient areas, so artificially enriching selenium, such as artificially cultivating selenium-enriched germinated brown rice, can ensure the intake of selenium in selenium-deficient areas.

Germinated brown rice is brown rice under certain process conditions, its internal enzymes are activated to promote the germination of brown rice. Brown rice is richer in nutrients after germination, such as trace elements in the free state, rich in vitamins and dietary fiber, a variety of antioxidant substances in the body, phytate (IP-6), glutathione (GSH), Tocopherol, GABA, etc., and the fiber of the brown rice bran layer is softened, which improves the taste of brown rice. In addition, germinated brown rice buds are loaded with various active enzymes, which can convert inorganic selenium into organic selenium.

However, using existing methods can only enrich low concentration of selenium or GABA in germinated brown rice.

Contents of the invention

The object of the present invention is to provide a production method of germinated brown rice, which can simultaneously enrich high-concentration organic selenium and GABA in germinated brown rice, with high production efficiency and low cost.

The purpose of the present invention is achieved through the following technical solutions:

A method for producing germinated brown rice, comprising the steps of simultaneously enriching selenium and GABA.

In the present invention, the following method is adopted to simultaneously enrich selenium and GABA: soak brown rice in soaking liquid containing L-sodium glutamate and sodium selenite, and then germinate.

In the present invention, the soaking solution contains: vitamin B ₆ 0.3-0.7 mg/mL, L-sodium glutamate 0.5-2.0 mg/mL, calcium chloride 2.0-3.0 mmol/L, sodium selenite 5 ～10mg/L, the pH of the soaking solution is 5.0～5.7.

In the present invention, the soaking temperature is 30-35° C., and the soaking time is 13-16 hours.

In the present invention, the germination method is as follows: germinate the soaked brown rice at 30-35° C. for 17-23 hours.

In a preferred technical scheme, the brown rice is sterilized by sodium hypochlorite before soaking.

In a preferred technical scheme, the germinated brown rice is dried at 40-45°C.

By adopting the method of the invention to produce germinated brown rice, high-concentration GABA and organic selenium can be enriched at the same time. Soak brown rice in soaking solution containing both L-sodium glutamate and sodium selenite and then germinate. Compared with soaking solution containing only L-sodium glutamate, germinated brown rice is enriched with high concentration of selenium and GABA The concentration is also significantly improved, and unexpected technical effects have been achieved. It shows that the enrichment efficiency of GABA in germinated brown rice is significantly improved when enriching selenium and GABA at the same time compared with enriching GABA alone.

Detailed ways

The solvent of the soaking solution in the present invention is water.

Embodiment one

The inventive method produces germinated brown rice, and concrete steps are as follows:

(1) Hull the newly obtained high-quality rice of the season -- Wuyunjaponica (moisture content is about 13%), remove broken rice, variegated rice, and immature rice to obtain brown rice.

(2) Disinfection: Wash the brown rice several times with distilled water, soak it in 1% sodium hypochlorite solution for disinfection, and then wash it several times with distilled water after the disinfection is completed.

(3) Soaking: Soak the sterilized brown rice in the soaking solution for 13 hours at 30°C. The composition of the soaking solution: the pH of the soaking solution is 5.0, vitamin B ₆ 0.3mg/mL, sodium L-glutamate 0.5mg/mL, calcium chloride 2.0mmol/L, sodium selenite 5mg/L.

(4) Germination: After soaking, spread the brown rice evenly in a petri dish, and germinate for 17 hours under the conditions of a temperature of 30°C and a light intensity of 3000LX, and the germination rate is greater than 95%.

(5) Drying: After germination, take out, rinse and drain, dry with hot air at 45°C until safe storage of water, and store at low temperature.

Set control experiment 1, only adjust the composition of the soaking solution, and keep the others unchanged. The pH of the soaking solution is 5.0, vitamin B ₆ 0.3mg/mL, L-sodium glutamate 0.5mg/mL, and calcium chloride 2.0mmol/L.

Set control experiment 2, only adjust the composition of the soaking solution, and keep the other things unchanged. The pH of the soaking solution is 5.0, and the sodium selenite is 5 mg/L.

The content of GABA in the germinated brown rice produced by the method of the invention is 450 mg/kg, and the content of organic selenium is as high as 550 μg/kg. The germinated brown rice obtained in Control Test 1 had a GABA content of 380 mg/kg and an organic selenium content of 45 μg/kg. The germinated brown rice obtained in the control experiment 2 had a GABA content of 180 mg/kg and an organic selenium content of 550 μg/kg. It shows that the present invention adopts the method of simultaneously enriching GABA and selenium to prepare germinated brown rice, and compared with the method of separately enriching GABA, the enrichment efficiency of GABA in brown rice is significantly improved.

Embodiment two

The inventive method produces germinated brown rice, and concrete steps are as follows:

(1) Hull the newly obtained high-quality rice of the season -- Wuyunjaponica (moisture content is about 13%), remove broken rice, variegated rice, and immature rice to obtain brown rice.

(2) Disinfection: Wash the selected brown rice several times with distilled water, soak it in 1% sodium hypochlorite solution for disinfection, and then wash it several times with distilled water after disinfection.

(3) Soaking: Soak the sterilized brown rice in the soaking liquid at 35°C for 16 hours. The composition of the soaking liquid: the pH of the soaking liquid is 5.7, vitamin B ₆ 0.7 mg/mL, sodium L-glutamate 2.0 mg/mL , calcium chloride 3.0mmol/L, sodium selenite 10mg/L.

(4) Germination: After soaking, evenly spread the brown rice in a petri dish, and germinate for 23 hours at a temperature of 35°C and a light intensity of 3500LX. The germination rate is greater than 95%.

(5) Drying: After germination, take out, rinse and drain, microwave dry at 40°C until safe storage of water, and store at low temperature.

Set control experiment 1, only adjust the composition of the soaking solution, and keep the others unchanged. The pH of the soaking solution is 5.7, vitamin B ₆ 0.7mg/mL, L-sodium glutamate 2.0mg/mL, and calcium chloride 3.0mmol/L.

Set control experiment 2, only adjust the composition of the soaking solution, and keep the other things unchanged. The pH of the soaking solution is 5.7, and the sodium selenite is 10mg/L.

The content of GABA in the germinated brown rice produced by the method of the invention is 440 mg/kg, and the content of organic selenium is as high as 950 μg/kg. The germinated brown rice obtained in Control Test 1 had a GABA content of 360 mg/kg and an organic selenium content of 45 μg/kg. The germinated brown rice obtained in the control experiment 2 had a GABA content of 180 mg/kg and an organic selenium content of 950 μg/kg. It shows that the present invention adopts the method of simultaneously enriching GABA and selenium to prepare germinated brown rice, and compared with the method of separately enriching GABA, the enrichment efficiency of GABA in brown rice is significantly improved.

Embodiment three

The inventive method produces germinated brown rice, and concrete steps are as follows:

(1) Hull the newly obtained high-quality rice of the season -- Wuyunjaponica (moisture content is about 13%), remove broken rice, variegated rice, and immature rice to obtain brown rice.

(2) Disinfection: Wash the selected brown rice several times with distilled water, soak it in 1% sodium hypochlorite solution for disinfection, and then wash it several times with distilled water after disinfection.

(3) Soaking: Soak the sterilized brown rice in the soaking solution at 32°C for 14 hours. The composition of the soaking solution: the pH of the soaking solution is 5.5, vitamin B ₆ 0.5 mg/mL, and sodium L-glutamate 1.0 mg/mL , calcium chloride 2.5mmol/L, sodium selenite 7.5mg/L.

(4) Germination: After soaking, evenly spread the brown rice in a petri dish, and germinate for 20 hours at a temperature of 32°C and a light intensity of 2500LX. The germination rate is greater than 95%.

(5) Drying: After germination, take out, rinse and drain, dry with hot air at 45°C until safe storage of water, and store at low temperature.

Set control experiment 1, only adjust the composition of the soaking solution, and keep the others unchanged. The pH of the soaking solution is 5.5, vitamin B ₆ 0.5mg/mL, L-sodium glutamate 1.0mg/mL, and calcium chloride 2.5mmol/L.

Set control experiment 2, only adjust the composition of the soaking solution, and keep the other things unchanged. The pH of the soaking solution is 5.5, and the sodium selenite is 7.5mg/L.

The content of GABA in the germinated brown rice produced by the method of the invention is 450 mg/kg, and the content of organic selenium is as high as 750 μg/kg. The germinated brown rice obtained in Control Test 1 had a GABA content of 370 mg/kg and an organic selenium content of 45 μg/kg. The germinated brown rice obtained in the control experiment 2 had a GABA content of 200 mg/kg and an organic selenium content of 750 μg/kg. It shows that the present invention adopts the method of simultaneously enriching GABA and selenium to prepare germinated brown rice, and compared with the method of separately enriching GABA, the enrichment efficiency of GABA in brown rice is significantly improved.

Claims (7)

1. A production method of germinated brown rice, characterized in that comprising the steps of enriching selenium and GABA simultaneously. 2. according to the production method of the described germinated brown rice of claim 1, it is characterized in that adopt following method to enrich selenium and GABA simultaneously: brown rice is soaked in the soaking liquid that contains L-sodium glutamate and sodium selenite, then germinates . 3. The production method of germinated brown rice according to claim 2, characterized in that the soaking solution contains: vitamin B ₆ 0.3-0.7 mg/mL, L-sodium glutamate 0.5-2.0 mg/mL, calcium chloride 2.0～3.0mmol/L, sodium selenite 5～10mg/L, pH of the soaking solution is 5.0～5.7. 4. The production method of germinated brown rice according to claim 3, characterized in that the soaking temperature is 30-35° C., and the soaking time is 13-16 hours. 5. The production method of germinated brown rice according to claim 4, characterized in that the germinated method is: germinating the soaked brown rice at 30-35° C. for 17-23 hours. 6. according to the production method of the described germinated brown rice of one of claim 1-5, it is characterized in that adopting sodium hypochlorite to sterilize before soaking in described brown rice. 7. The production method of germinated brown rice according to claim 6, characterized in that the germinated brown rice is dried at 40-45°C.