【摘要】 研究了微波辅助提取虎杖色素的新工艺并确定了最佳工艺条件:原料为2.0000g的虎杖干粉,提取剂为体积分数75%的乙醇,提取剂用量为1∶60(g∶mL),微波功率为464W,提取时间为300s,提取次数为2次。与溶剂浸提取法和索氏提取法相比,微波提取虎杖色素的每次提取时间分别由24h和2h减小为300s,提取率分别从91.0%和73.5%增加到97.2%。更多还原

【Abstract】 A new method of microwave extraction was used to extract the pigment from Polygonum Cusdidotum Steb.et Zucc. The extraction processes were investigated and the optimal conditions were determined as follows: raw material is 2.0000 g dry powder, extraction agent is 75 % alcohol solution (quality percentage),the ratio of raw material to extraction agent is 1∶60(g∶mL),microwave power is 464 W,extraction time is 300 s,extraction times is 2. Compared with solvent or soxhlet extraction, microwave extraction reduces extraction time from 24 h or 2 h to 300 s and increases extraction rate from 91.0 % or 73.5 % to 97.2 % respectively.更多还原