Preparation for active octacosa alkanol and triaconta alkanol in rice bran

Abstract

The invention discloses a method for preparing rice bran active substances octacosanol and triacontanol, which belongs to the comprehensive utilization of rice bran, especially the comprehensive utilization of rice bran wax. The present invention uses crude bran wax as a raw material, and after refining the crude bran wax, adopts ultrasonic hydrolysis of rice bran wax, extraction of fatty alcohol, and separation of octacosanol and triacontanol by molecular distillation technology, a product with a purity greater than 80% is prepared. . The invention uses ultrasonic hydrolysis of rice bran wax and molecular distillation technology to separate octacosanol and triacontanol, which belongs to pioneering research, and establishes a complete set of technology for extracting octacosanol and triacontanol from rice bran wax. The hydrolysis reaction is shortened by more than 10 hours compared with the general method, shortened from 12-16 hours to less than 1 hour, and the hydrolysis rate has been increased by 2 times; the pilot test of molecular distillation has been carried out, and the preparation of high-purity biologically active substances octacosanol, Triacontanol breakthrough. The product has high purity, low iodine value, and heavy metal and microbial content meet the requirements of food additives, creating conditions for the development and utilization of high-carbon alcohols in the future.

Description

technical field [0001] The invention discloses a method for preparing rice bran active substances octacosanol and triacontanol, which belongs to the comprehensive utilization of rice bran, especially the comprehensive utilization of rice bran wax. Background technique [0002] Rice bran is the husk obtained by grinding the fruit body of rice, a family plant, and its content accounts for about 5-6% of rice. my country's rice output is one-third of the world's, and the annual output of rice bran reaches 9 million tons. Rice bran oil contains about 16.3%, and rice bran oil contains 3-4% wax. The potential output of rice bran wax in my country is 50,000 tons per year. Octacosanol and triacontanol are biologically active functional substances, mainly distributed in plant epidermis and germ, etc. They are abundant in rice bran wax. According to literature reports, some scholars have determined that octacosanol accounts for 12.73%. , fatty acid 1.03%. Thirty carbon fatty alcohol ...

AI Technical Summary

Problems solved by technology

Domestic research on this aspect is less, and there is no report on industrialization. So far, Japan and the United States have dozens of applied patents on octacosanol, involving functional food, medicine, cosmetics and other industries, and have already occupied Considerable market share, and its industrialization also has considerable scale. On the other hand, from the current world market, octacosanol products mainly contain 10-20% products, and there are few high-purity products. A report on large-scale industrial production of octacosanol with higher purity (>50%)