从贯叶连翘中提取金丝桃素的工艺探讨

Studies on the choice of conditions for the extraction of hypericin from Hypericum perforatum

对从贯叶连翘中提取金丝桃素的工艺条件进行了优化研究 ,结果表明 ,金丝桃素提取较佳工艺为 :45℃的水浸泡 2 h后 ,加入 0 .5 % Na OH,用 75 %甲醇在 0 .0 5 Mpa下 78℃提取5次 ,每次 1 .5 h,溶媒量为 5倍 ,浓缩温度与干燥温度为

Conditions for the extraction of hypericin from Hypericum perforatum L.were optimized.Results of the optimization showed that after immersed in water (45℃) for two hours,adding with 0.5% NaOH,5 times extraction with 75% methanol at 78℃ under 0.05 Mpa,1.5 h every time,the temperature for concentration and spray dried not above 78℃.