黄花梨叶片总黄酮提取工艺研究

Study on Extraction Technology of Total Flavonoids from Leaves ofHuanghua Pear

摘要: 以黄花梨叶片为材料，采用乙醇提取法，通过单因素试验和正交试验，对叶片中总黄酮提取工艺进行研究。结果表明，最佳提取工艺为：乙醇浓度70%，液料比50:1 ml/g，提取温度40℃，提取时间2 h。在此条件下，总黄酮的提取率为9.72%。

Abstract: Taking the leaves of Huanghua pear as material, the extraction process of total flavonoids from leaves of Huanghua pear was studied by single factor experiment and orthogonal experiment with ethanol extraction method. The results showed that the optimum extraction conditions were ethanol concentration 70%, liquid-solid ratio 50:1 ml/g, extraction temperature 40˚C, extraction time 2 h. Under these conditions, the extraction rate of total flavonoids was 9.72%.