菊花中黄酮成分加压提取的动力学研究
Journal of Qingdao University of Science and Technology(Natural Science Edition)(2015)
Abstract
研究了菊花中黄酮成分的加压提取动力学.利用提取传质过程中的“二阶”动力学模型,考察不同温度下黄酮成分的质量浓度与提取时间之间的关系,并推导提取过程中的提取速率常数和表观活化能.结果表明,菊花中黄酮成分的提取速率常数与温度有关,k=1.6×105 exp(-32 168.5/RT),得出提取动力学方程式为Ct=t/{1/[2.9×107exp(-6 002/T)]+t/(0.006T-1.465 3)},表观活化能为32 168.5 J·mol-1.
MoreKey words
Chrysanthemum monfolium Ramat,flavonoid,pressurized extraction,kinetics
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