木瓜黄酮的提取及其紫外光谱特征

Extraction of Pawpaw Flavoids and its Ultraviolet Spectrum Characteristic

木瓜含有清除人体活性氧自由基的黄酮类化合物。本文介绍以乙醇浸提、乙酸乙酯萃取提取木瓜中的黄酮类化合物,并以AB-8大孔树脂对粗提物进一步提纯的工艺。对纯化提取物的分析结果表明:木瓜黄酮的含量(以芦丁标准品计)为4.8%,对其紫外光谱特征谱图的观察分析发现:木瓜提取物中含有A-环苯酰结构和B-环肉桂酰结构,图谱特征与对照品芦丁相似,这一图谱特征说明木瓜提取物具有类黄酮化合物C6-C3-C6的基本结构。

Pawpaw contained the flavonoids compound which can scavenge the activity oxygen free radicals in human body. In this paper, the crude flavonoids was extracted from pawpaw by ethanol and acetic ester, and then purified by AB-8 macroporous resins with the content of the flavonoids （rutin as standard） being of 4.8%. The structures of benzoyl ring （A-ring） and cinnamoyl ring （B-ring） were found in the extracted flavonoids bore and the spectrum characteristic of the extracts was similar to that of the rutine, which indicated that the extracts possessed the basic structure of flavonoids compounds, C6-C3-C6.