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- W2393911355 abstract "OBJECTIVE To develop a method for the determination of total contents of flavonoids in Apocynum Venetum,leaves,use this method to find a good way to obtain flavoniods in Apocynum Venetum L.METHODS The total contents of flavonoids was determined by ultraviolet spectrophotometry by using the standard of quercetin.RESULTS The linear ranges of quercetin was 2.96-22.20 mg·L-1,and regression equation was Y=11.54X+0.175(r=0.999 96);The total contents of flavonoids in powder obtained by ultrasonic(13.07%) was higher then that of others.CONCLUSION UV to determine the total contents of flavonoids in Apocynum Venetum L.,the total contents of flavonoids in powder obtained by ultrasonic(13.07%) is high." @default.
- W2393911355 created "2016-06-24" @default.
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- W2393911355 date "2006-01-01" @default.
- W2393911355 modified "2023-09-26" @default.
- W2393911355 title "Extraction and determination of content of flavonoids in Apocynum Venetum leaves" @default.
- W2393911355 hasPublicationYear "2006" @default.
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