Preparation method of red rice powder with blood lipid-lowering function

The fermentation of Monascus purpleis Z505 to produce ethyl linoleate solves the problems of corrosion, pollution and high cost of existing ethyl linoleate production equipment, and realizes efficient and low-cost ethyl linoleate production. The prepared red yeast rice powder is used in food and health products.

CN112471518BActive Publication Date: 2026-06-16HUBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUBEI UNIV OF TECH
Filing Date
2020-12-03
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

Existing methods for producing ethyl linoleate suffer from severe equipment corrosion, environmental pollution, high costs, unsatisfactory esterification yields, and easy oxidation of linoleic acid during esterification. Furthermore, ethyl linoleate is present in low concentrations in wines and fruits, making industrial-scale production difficult.

⚗Method used

Liquid fermentation of Monascus purpleis Z505 was used to produce red yeast rice powder rich in ethyl linoleate using grains as raw materials through optimized culture medium and fermentation conditions, including slant culture, liquid seed culture and fermentation culture, with optimized fermentation medium formulation and temperature control.

🎯Benefits of technology

High-yield production of ethyl linoleate has been achieved, with a high ethyl linoleate content in the fermentation broth. The prepared red yeast rice powder has a significant lipid-lowering function, is inexpensive and not limited by season or region, and is suitable for food and health products.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a preparation method of novel blood-lipid-reducing functional monascus powder, and belongs to the technical field of bioengineering and health-care product preparation. The method comprises the following steps: inoculating seed liquid of purple monascus Z505 into a fermentation medium to culture, and obtaining functional monascus powder with blood-lipid-reducing function by filtering, freeze-drying and crushing the obtained fermentation liquor; wherein the formula of the fermentation medium is as follows: 4-8% of grains, 1-3% of soybean powder, 0.2-1% of ammonium sulfate, 0.1-1% of potassium dihydrogen phosphate, 0.01-0.1% of magnesium sulfate, 0.01-0.1% of potassium chloride, 0.0001-0.001% of ferrous sulfate, 0.001-0.005% of manganese sulfate and 0.0001-0.001% of zinc sulfate, and the rest is water, and the pH value is 5-6. The content of ethyl linoleate in the obtained functional monascus powder is about 15mg / g, and the functional monascus powder can be used in food and health-care products.
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