食品科学2012，Vol.33Issue(17)：112-117,6.
黄芪超微粉吸附胆固醇的热力学与动力学研究
Dynamics and Thermodynamics of Adsorption of Cholesterol on Superfine Powder of Astragalus membranaceus Radix
张荣 1徐怀德 1姚勇哲 2陈华瑞1
作者信息
- 1. 西北农林科技大学食品科学与工程学院,陕西杨凌712100
- 2. 西北农林科技大学园艺学院,陕西杨凌712100
- 折叠
摘要
Abstract
In this study, the effects of superfine powdered Astragalus membranaceus radix-to-cholesterol solution ratio, adsorption time, particle size of superfine powdered Astragalus membranaceus radix, initial cholesterol concentration and temperature on the adsorption of cholesterol on superfine powdered Astragalus membranaceus radix. Meanwhile, the adsorp- tion process was dynamically and thermodynamically analyzed. Good results were obtained after 60 min adsorption of 1.50 mg/mL cholesterol solution by superfine powdered Astragalus membranaceus radix at ratio of 1：30 （m/V） and 25 ℃. Under these conditions, the maximum adsorption quantity was 15.60 mg/g. Therefore, the adsorption process is a spontaneous process in which physical adsorption is dominant and easily occurs. Furthermore, surface absorption was dominant at low cholesterol concentrations, but both surface adsorption and intraparticle diffusion were dominant at high cholesterol concentrations.关键词
黄芪超微粉/胆固醇/吸附条件/动力学/热力学Key words
superfine powdered Astragalus membranaceus radix/cholesterol/adsorption conditions/dynamics/thermodynamics分类
医药卫生引用本文复制引用
张荣,徐怀德,姚勇哲,陈华瑞..黄芪超微粉吸附胆固醇的热力学与动力学研究[J].食品科学,2012,33(17):112-117,6.
