Method for extracting high-quality proanthocyanidins from pine needle

Abstract

The invention relates to a method for extracting high-quality proanthocyanidins from pine needle. The method comprises the following steps: extracting proanthocyanidins from pine needle raw material powder by using an alkaline aqueous solvent, concentrating the obtained extract liquid, extracting, adding an anti-solvent to the obtained new extract liquid for precipitating proanthocyanidins, and filtering to obtain a highly-pure proanthocyanidin product. The method has the advantages of simplicity, energy saving, environmental protection, and no need of large apparatus investment, and is very suitable for the industrialized production. The obtained highly-pure proanthocyanidin product can be used in food antioxidants, cosmetics, healthcare foods, medicines and the like.

Description

technical field [0001] The invention belongs to the field of natural product medicine and health care, in particular to a method for separating and purifying proanthocyanidins, and belongs to the field of natural product extraction. Background technique [0002] Proanthocyanidin (OPC) is a kind of polyphenolic compound. Due to the electron-rich hydroxyl portion in the molecule of this kind of substance, it has strong anti-oxidation ability, free radical scavenging ability and special improvement effect on human microcirculation. Proanthocyanidins have the effect of removing free radicals in the human body, can prevent and treat cardiovascular and cerebrovascular diseases, have anti-tumor, anti-radiation, anti-inflammatory, anti-allergic effects, and have direct and indirect preventive and therapeutic effects on more than 70 diseases in the human body. According to data reports, the antioxidant capacity of proanthocyanidins in the body is 50 times that of vitamin E and 20 ti...

AI Technical Summary

Problems solved by technology

Proanthocyanidins need to be extracted from pine needle powder Chinese medicinal materials. The commonly used extraction methods are water extraction and alcohol extraction. Water extraction generally requires alcohol precipitation after extraction. The time is long, the extraction effect is poor, and alcohol precipitation will take away a part Effective extraction of ingredients; the current alcohol extraction requires the use of other solvents to dissolve alcohol and remove alcohol, the process is cumbersome and the effect is not ideal