摘要
针对目前中药材有效成分提取过程模型研究较少,且模型多以球型假设为前提的问题,根据中药材多以根、茎的形式直接提取的实际情况,利用Fick第二扩散定律,假设中药材有效成分由径向扩散,忽略轴向扩散,且以内扩散为主,提出了一种能反映圆柱型结构中药材的提取动力学模型.依据丹参中有效成分丹参素提取过程试验数据,通过温度和液固比的变化,优化参数,得到提取动力学模型.利用该模型对丹参药材的工业提取过程进行模拟,得到了与生产结果较为吻合的计算结果,预测误差为10%左右.结果表明,模型预测效果佳,可用于中药材的工业提取过程研究.
As few kinetic models for herb extraction process were studied and most of present models based on spherical configuration, a new model based on cylindrical configuration was proposed. It used the Fick＇ s second law of diffusion with the hypothesis that the effective components diffusion was radial and inner diffusion was the main. The parameters in the model were obtained by the experimental data of extracting danshensu from the Salvia rniltiorrhiza Bge. The simulation on the industrial extraction process of Salvia rniltiorrhiza Bge was investigated. The calculational data accorded well with the experimental data and the predicted error was about 10%. The kinetic model was feasible to describe the industrial process and the forecast result was well.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2006年第9期1600-1603,共4页
Journal of Zhejiang University：Engineering Science
基金
浙江省科技厅重大科技计划资助项目(021103549)
关键词
圆柱型结构
中药
提取
动力学模型
丹参
cylindrical configuration
herb
extraction
kinetic model
Salvia miltiorrhiza Bge
