Method for obtaining ginkgetin and bilobalide from ginkgo leaves

The invention discloses a method for obtaining ginkgetin and bilobalide from ginkgo leaves in a low-alcohol circulating way. The ginkgo leaves are taken as a raw material, a 20 % methyl alcohol hot dipping method is adopted for extracting, direct chromatography and effluent collection, then clarifyi...

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Bibliographic Details
Main Authors ZHANG MIN, REN XIAOFENG, ZHANG BIRONG, YAN GAOYING
Format Patent
LanguageChinese
English
Published 07.12.2016
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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Summary:The invention discloses a method for obtaining ginkgetin and bilobalide from ginkgo leaves in a low-alcohol circulating way. The ginkgo leaves are taken as a raw material, a 20 % methyl alcohol hot dipping method is adopted for extracting, direct chromatography and effluent collection, then clarifying and purification treatment are performed on effluent which is used for next batch extraction, and circulation extraction is accomplished. Compared with the traditional process, the method, provided by the invention, for solvent extraction has the advantages that alcohol degree and alcohol consumption are reduced greatly, and the raw material is reduced greatly; low alcohol can be in direction chromatography without need of concentration, during an elution process, low alcohol elution is not used, the production period is reduced, moreover, adsorbed effluent can be used for production and extraction after clarification, the cost for treating waste water is reduced, and the use ratio of the raw material is increas
Bibliography:Application Number: CN201610725711