Methods :The flavonids were extracted by ethanol as the solvent from Ipomoea batatas Lam leaves with ultrasonic wave and ethanol extraction.

　
英 美
  • 方法:采用超聲波乙醇浸提法從紅薯葉中提取黃酮類(lèi)物質(zhì),對所提取的黃酮類(lèi)物質(zhì)進(jìn)行驗證,并用紫外分光光度法測定含量。
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