Red yeast rice rich in Monacolin K and preparation method of red yeast rice

Abstract

The invention discloses red yeast rice rich in Monacolin K and a preparation method of the red yeast rice. The preparation method comprises the steps of taking 40 monascus strains which are obtained in a separated mode as objects, and screening out a monascus strain, namely FG-8, wherein the monascus strain produces the Monacolin K in a high-yield mode and produces no citrinin, and the Monacolin K content of a fermentation product of the monascus strain is 2.46 mg / g and 2.29 times that of a type strain ACCC 30501. Through molecular identification, the strain is determined as red monascus. The red monascus, namely the FG-8, is treated as an original strain, 26 different varieties of rice raw materials are screened, when the FG-8 is founded, polished rice of a rice variety, namely 'California red rice', is treated as substrates for conducting fermentation, and the red yeast rice rich in the Monacolin K is obtained. The red yeast rice is simple in preparation method, the Monacolin K content measured under the optimum fermentation condition is 4.64 mg / g and approximately 8.30 times that of Furuta red yeast rice on the market, and no citrinin is detected.

Description

technical field [0001] The invention relates to red yeast rice and a preparation method thereof, in particular to red yeast rice rich in MonacolinK and a preparation method thereof. Background technique [0002] Red yeast rice originated in China and has a history of thousands of years. In ancient my country, it was often called Danqu or Chiqu. It is a kind of purple-red rice koji made from indica rice and fermented by Monascus. It is a pure natural, high-safety, and beneficial to human health food additive, and has been deeply loved by the people of our country. . Cholesterol content in human blood is too high for a long time, which can easily lead to cardiovascular and cerebrovascular diseases such as atherosclerosis. In 1979, Professor Akira Endo, a Japanese scholar, discovered a substance that can lower human serum cholesterol—Monacolin K (MK), or Lovastatin—from the secondary metabolites of Monascus fungus. It has aroused widespread concern in the medical community a...

AI Technical Summary

Problems solved by technology

However, there are few reports at home and abroad on the difference of Monacolin K produced by Monascus fermented by different varieties of rice raw materials.