【摘要】 采用不同的浓度乙醇提取苦瓜叶中的黄酮,以芦丁为标准品,采用NaNO2-Al(NO3)3比色法,测定提取液中的黄酮含量.结果表明,四种因数对提取率的影响分别是:乙醇浓度、料液比、提取时间、提取温度.乙醇提取法最优工艺为:乙醇浓度65%,提取时间4h,料液比1∶20,提取温度为80℃.更多还原

【Abstract】 Adopting different consistency ethanol to extract flavone in balsampear leaf.Taking rutin as standard,adopting NaNO2-Al(NO3)3 colorimetry to determine the flavone contents in extraction liquid.The result shows that the four factors influence the extraction accordingly: ethanol consistency,liquid ratio,extraction time,extraction temperature.The best method of ethanol extraction technics: ethanol consistency 65%,liquid ratio 1:20,extraction time 4h,extraction temperature 80℃.更多还原