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- W2366917440 abstract "For the utilization of the resources of stem of anise rationally,the optimum extraction conditions and pharmacological action were investigated.Ethanol,petroleum ether and water were applied as extractant,means of ultrasonic wave and un-ultrasonic wave was used respectively to extract the total flavones of anise stem.Different conditions such as temperature,concentration of solvent,power of ultrasonic and extraction time affected the extraction,were investigated.The content of flavones was analyzed by spectrophotometry.The experimentation of scavenging action of hydroxy radical was made.The optimum conditions were as followed: 40% ethanol as solvent,75℃,ultrasonic wave of 40W,and 3h.The total flavones of anise stem of Nanning,Hezhou,Hechi,Qinzhou,Baise was 10.8395,14.7185,13.6244,13.7724,10.3422 mg/mL respectively.The efficiency of ethanol extraction methods in ultrasonic wave for the extraction of total flavones of anise stem was optimal and the total flavones by this method was highest." @default.
- W2366917440 created "2016-06-24" @default.
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- W2366917440 date "2010-01-01" @default.
- W2366917440 modified "2023-09-25" @default.
- W2366917440 title "Extraction and Free Radical Scavenging Investigation of Total Flavonones from Anise Stem" @default.
- W2366917440 hasPublicationYear "2010" @default.
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