Red yeast brown rice enriched with gamma-aminobutyric acid and Monacolin K and production method

Abstract

The invention discloses red yeast brown rice with the advantages of low cost, high nutrition value, and gamma-aminobutyric acid and Monacolin K enrichment and a production method. In the produced red yeast brown rice, the content of the gamma-aminobutyric acid is 40 to 600mg / kg, and the content of the Monacolin K is 5 to 9g / kg. The specific production method comprises the following steps in sequence: a. brown rice is washed with clean water, cooked, sterilized and cooled; b. a carbon source, a nitrogen source, trace elements and edible acid are blended to obtain a shake flask culture medium with the pH value of 3.5 to 4.0 to be sterilized and cooled, wherein 3 to 5g of the carbon source, 3 to 4g of the nitrogen source and 0.2 to 0.3g of the trace elements are added to per 100ml of a culture solution; c. red yeast fungi (MK-18) obtained in a slant culture mode are implanted to the shake flask culture medium, and the shake flask culture is carried out to the log phase; d. the red yeast fungi shake flask seeds in the log phase are implanted to the brown rice obtained in the step a, the seeds are cultured for 240 to 248 hours at the constant temperature 31 to 32 DEG C, then the seeds are cultured for 120 to 148 hours at the constant temperature 25 to 26 DEG C; and e. the red yeast brown rice is dried at the constant temperature 60 to 65 DEG C.

Description

Technical field: [0001] The present invention relates to a kind of brown rice and its production method, especially a kind of red yeast brown rice with low cost, high nutritional value, rich in γ-aminobutyric acid and monacolin K and its production method Background technique: [0002] Red yeast rice is the crystallization of life wisdom of "medicine and food coming from the same source" in China for thousands of years. Red yeast rice is also known as "Danqu" and "Divine Comedy". The medicine book that clearly records the medical efficacy of red yeast rice can be traced back to Wu Rui's "Daily Grass" (1329) in the Yuan Dynasty, "Red yeast rice brews wine, breaks blood and promotes medicine". Hu Sihui, a contemporaneous imperial doctor of Yinshan, said in "Yinshan Zhengyao": "Red yeast, invigorating the spleen, nourishing qi, and mild." Zhu Danxi, the most famous medical scientist in Jin and Yuan Dynasties, recorded in his "Materia Medica Yanyi Supplement" that "red yeast ri...

AI Technical Summary

Problems solved by technology

[0006] At present, in order to increase the content of Monacolin K (Monacolin-k) in the product, the invention patent application of Chinese Patent Application No. 03113351.7 discloses a kind of "preparation method of a kind of citrinin-free high color value functional red yeast rice powder" ", is that liquid submerged fermentation broth is spray-dried to obtain concentrated red yeast rice powder, which increases the content of Monacolin K (Monacolin-k), but the cost required in the actual industrial production process is relatively high, which is not conducive to investment, and the product only contains monacolin K

So far, there is no report about the simultaneous enrichment of GABA and monacolin K in one product