【摘要】 目的:为充分利用洋葱植物资源,避免资源的浪费,探讨洋葱总黄酮的提取及鉴别方法。方法:采用超声波乙醇浸提法从洋葱中提取黄酮类物质,对所提取的黄酮类物质进行验证,并用紫外分光光度法测定含量。结果:测得样品中总黄酮的含量C=20.58%,平均回收率为102.1%,其纯度和产率均较高。结论:该方法采用全物理过程,无任何污染,是提取洋葱黄酮类物质的有效途径。更多还原

【Abstract】 Objective: In order to make use of the resources of onion,avoid wasting and approach the extraction of total flavanone of onion.Methods: The flavonids were extracted by ethanol as the solvent from onion with ultrasonic wave and ethanol extraction.Using spectrophotometry to extract and check the flavanone of onion.Results: By this method getting the c density of the total flavanone of onion is C=20.58% and the rate of average recovery is102.1%.Conclusion: This text provides the extraction and purifying methods to get the outcome and the purity of the flavanone are all very high.This method is a purely physical process and has not any pollution.It is an ideal way to extract the flavanone of onion.更多还原