采用加压提取法提取中药槐米中的黄酮类成分,以提取率为指标,考察不同温度下槐米黄酮提取率随时间变化的规律。结果表明,升温阶段的提取动力学模型为ln(C∞/C∞-Ct)=kt+ln(C∞/C∞-C0)在恒温阶段,提取动力学符合1-2/3α-(1-α)1/3=k2t,根据阿伦尼乌斯方程得出升温和恒温阶段的提取活化能分别为-214.76、-516.26 kJ/mol。 The extraction of flavonoids from Sophora flavescens by pressure extraction was used as an index to investigate the regularity of the extraction rate of S. japonicum flavonoids with time under different temperatures. The results showed that the kinetic model of extraction was as follows: ln (C∞ / C∞-Ct) = kt + ln (C∞ / C∞-C0) -α) 1/3 = k2t. According to the Arrhenius equation, the activation energy for extraction at constant temperature and temperature is -214.76 and -516.26 kJ / mol, respectively.