Method for reducing content of ginkgolic acid in ginkgo leaves

Abstract

The invention discloses a method for reducing the content of ginkgolic acid in ginkgo leaves. The method comprises the step of irradiating the ginkgo leaves under an ultraviolet lamp for 0.1-5 hours.Compared with normal ginkgo leaves, the ginkgo leaves subjected to UV (ultraviolet) radiation treatment have the advantages that the content of ginkgolic acid is remarkably reduced, and the quality ofthe leaves is improved. The method is convenient to operate, simple and feasible, and is suitable for popularization in production.

Description

technical field [0001] The invention belongs to the technical field of ginkgo product application, and in particular relates to a method for reducing the content of ginkgolic acid in ginkgo leaves. Background technique [0002] Ginkgo biloba L., also known as ginkgo tree, is native to my country and has dioecious plants. It is a precious relict plant and has the reputation of "living fossil". The whole body of Ginkgo is full of treasures, and its leaves, fruits and bark can be used as medicine, especially the leaves of Ginkgo, which have the highest medicinal value. Ginkgo biloba extract (GBE) is prepared from Ginkgo biloba leaves, the main medicinal ingredients of which are flavonoids, but the ginkgolic acids in it are the main cause of adverse reactions in the human body. It has been reported that ginkgolic acid is a cytotoxin that can cause cytotoxicity, embryotoxicity, immunotoxicity, mitochondrial DNA damage, mutagenicity and mild neurotoxicity. [0003] At present, m...

AI Technical Summary

Problems solved by technology

my country has more than 70% of the world's ginkgo resources, but the extraction technology and the control technology of ginkgolic acid are relatively backward. According to statistics, the annual output of dried ginkgo green leaves in my country reaches 18,000-20,000 tons, and the annual output of ginkgo leaf extract reaches 90 tons. , but although the output is large, the manpower and material resources spent are more than twice that of developed countries

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