含6-羟基犬尿喹啉酸的银杏叶提取物制造技术

本发明专利技术公开一种含6-羟基犬尿喹啉酸6-hydroxykynurenic?acid(6-HKA)的银杏叶提取物，其与银杏叶中的白果内酯有协同作用，所述提取物中6-HKA含量在3～4.5％。本发明专利技术提供了含6-HKA的银杏叶提取物的制备方法，采用混合溶剂提取，经过浓缩、水沉、过滤、干燥等步骤得到提取物。本发明专利技术为进一步开发银杏叶的新用途提供基础，有较大的应用价值。

A Ginkgo biloba extract containing 6- hydroxy - hydroxy acid

The invention discloses a Ginkgo biloba extract containing 6- hydroxy vitamin acid acid 6-hydroxykynurenic (6-HKA), which has synergistic action with ginkgo lactone in the ginkgo leaf, and the content of 6-HKA in the extract is from 3 to 4.5%. The invention provides a preparation method of Ginkgo biloba extract containing 6-HKA, which is extracted by a mixed solvent, and extracts are obtained through the steps of concentration, water immersion, filtration and drying. The invention provides a basis for further development of Ginkgo leaves, and has great application value.

【技术实现步骤摘要】

【技术保护点】
１．一种含６－羟基犬尿喹啉酸的银杏叶提取物，其特征在于，所述银杏叶提取物中６－羟基犬尿喹啉酸的含量为３％～４．５％。

【技术特征摘要】

【专利技术属性】
技术研发人员：殷梦龙，董惠燕，张有发，龙伟岸，
申请(专利权)人：上海诺德生物实业有限公司，
类型：发明
国别省市：31