High-quality oligomeric proanthocyanidins and preparation method thereof

Abstract

The present invention relates to the technical field of natural plant extraction and processing, specifically a method for preparing high-quality oligomeric proanthocyanidins, including extraction, concentration, purification, re-concentration, water solubility, depolymerization, and spray drying to obtain high-quality oligomeric proanthocyanidins; the present invention The raw materials and auxiliary materials used in the invention are all natural materials or physical synthesis and biological fermentation methods. The obtained oligomeric proanthocyanidins can be completely used in food processing, safe, secure, and easy to operate. The prepared oligomeric proanthocyanidins have strong antioxidant properties sex.

Description

High-quality oligomeric proanthocyanidins and preparation method thereof technical field The present invention relates to natural plant extraction processing technical field, specifically a kind of high-quality oligomeric proanthocyanidins Preparation. technical background [0002] Proanthocyanidins are polyphenolic compounds of a class of flavanol monomers and their polymers, also known as condensed tannins. Proantho Cyanidins It is a natural biologically active substance widely distributed in nature. canal injury ] , Prevention and treatment of atherosclerosis, anti-ultraviolet rays, protection of optic nerve, antioxidant and other pharmacological activities, in food, health care There are many applications in the fields of products, medicines and cosmetics. [0003] Proanthocyanidins are multimers of different amounts of catechins or / and epicatechins, usually 5 or The procyanidins formed by the polymerization of more than 5 monomers are called high-polymer pr...

AI Technical Summary

Problems solved by technology

This patent has the following disadvantages: no reduction polymerization is used, the degree of polymerization of proanthocyanidins is high, the molecular weight is high, it is not easy to be absorbed by the human body and human microorganisms, and the antioxidant capacity is weak

This patent has the following disadvantages: the concentration of hydrogen peroxide is high, and the amount of hydrogen peroxide added is large, it is easy to oxidize the oligomeric proanthocyanidins just produced, and the yield of oligomeric proanthocyanidins is low

A large amount of water is used to extract raw materials at high temperature, which increases production costs, and the yield of oligomeric proanthocyanidins is low, and it is difficult to obtain high-purity proanthocyanidins