中成药2017，Vol.39Issue(1)：65-70,6.DOI:10.3969/j.issn.1001-1528.2017.01.012
黄芪水提取物吸湿模型的拟合
Fitting of moisture adsorption models for Astragali Radix aqueous extract
摘要
Abstract
AIM To fit the moisture adsorption models for Astragali Radix aqueous extract.METHODS For the aqueous extract prepared by decocting,the moisture adsorption kinetics curve and adsorption/desorption isotherms were drawn by gravimetry,and then the data on moisture adsorption were fitted.The fitted models were optimized according to evaluation indices of root mean square error (RMSE),residual sum of squares (RSS) and coefficient of determination (R2).RESULTS The double exponential model for moisture adsorption kinetics curve and Peleg model for adsorption/desorption isotherms were considered as the two best models with regard to their fitting effects (R2 values were the closest to 1,RMSE and RSS values were the closest to 0).Among them,various adsorption/desorption isotherms all belonged to type Ⅱ ("S" isotherm),while the higher equilibrium moisture content of desorption isotherm than that of adsorption isotherm contributed to obvious type H3 hysteresis phenomenon.CONCLUSION Double exponential model and Peleg model can well fit the moisture adsorption kinetics curve and adsorption/desorption isotherms of Astragali Radix aqueous extract,respectively.关键词
黄芪/水提取物/模型拟合/吸湿动力学曲线/吸附/解吸等温线Key words
Astragali Radix/aqueous extract/model fitting/moisture adsorption kinetics curve/adsorption/desorption isotherms分类
医药卫生引用本文复制引用
王雅洁,汤成成,贾艾玲,董金香,邱智东,杨晶..黄芪水提取物吸湿模型的拟合[J].中成药,2017,39(1):65-70,6.基金项目
吉林省科技厅项目(20140309002yy) （20140309002yy）
