黄芪水提液分子量分布特征——基于微波辅助法和超声波提取法的对比

Molecular Weight Distributing of Leguminosae Water Extraction Liquid——Comparative Research by Microwave Extraction and Ultrasonic Wave Extraction

对比微波辅助法和超声波提取法对黄芪水提液分子量分布特征的影响。结果表明:对于分子量为2 000～50 000的较大物质,微波辅助提取10 min的浸出量是超声辅助提取30 min的14.53倍;对于分子量大于50 000的物质,微波辅助提取10 min的浸出量仅占总浸出物的1.947%,而超声辅助提取50 min为14.933%。因此,微波辅助工艺在较大分子量有效成分的快速浸出和避免无效物质的浸出方面显著优于超声波辅助工艺。

Contrastive experiments of microwave assisted extraction（MAE） and ultrasonic wave technology were carried out to analyze the effect of the different kinds of extraction technology on the characteristics of molecular weight distributing of solute in Leguminosae water extraction liquid.Results indicated that extracts with molecular weight 2 000-50 000 Dalton at 10 minutes by MAE technology was 14.53 times of that at 30 minutes by ultrasonic wave extraction;extracts with molecular weight bigger than 50 000 Dalton was 1.947% of total extracts at 10 minutes by MAE technology,but it was 14.933% of that at 50 minutes by ultrasonic wave extraction.Therefore,MAE technology was obviously better than ultrasonic wave technology on the fast extraction of valid components with bigger molecular weight and avoiding of invalid extracts.