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- W2356672358 abstract "[Objective] The aim of the research was to optimize the extraction technology of tannins in ginkgo leaves.[Method] The tannins was extracted with pure water,absolute alcohol,alcohol-ether with ratio at 1∶1,alcohol(95%)-water,acetone-water and acetone-absolute alcohol-water with ratio at 1∶1∶1 resp.from ginkgo leaves.[Result] The extraction rate of tannins with acetone-water as extraction agent was higher and its optimum solvent ratio was 1∶2.The influence of solvent ratio on the extraction rate of tannins was greater and the ratio of acetone to water varied with water content of raw materials.As the dosage of extraction solution was increased,the extraction rate was increased.The extraction rate was highest when the solid-liquid ratio was 1∶12,but it had less difference from that with solid-liquid ratio at 1∶10.So,it was more economic to extract with solid-liquid ratio at 1∶10.After anionic surfactant SDS and DBS were added,the extraction rate of tannins was decreased a little.When the amphoteric surfactant OP was added,the extraction rate of tannins was decreased most.[Conclusion] The extraction condition for tannins in ginkgo leaves was extraction with acetone-water with ratio at 1∶2 as extraction solvent and solid-liquid ratio at 1∶10 by refluxing for 12 h." @default.
- W2356672358 created "2016-06-24" @default.
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- W2356672358 date "2009-01-01" @default.
- W2356672358 modified "2023-09-26" @default.
- W2356672358 title "Research on Optimizing the Extraction Technology of Tannins in Ginkgo Leaves" @default.
- W2356672358 hasPublicationYear "2009" @default.
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