本文用动态法测定averm ectin在甲醇、乙醇、正丙醇、正丁醇和正戊醇中的溶解度曲线,并分别用理想溶液模型、A pe l-b lat溶解度模型和多项式经验方程对实验测定溶解度数据进行关联。结果显示理想溶液模型的误差较大,多项式经验方程的...本文用动态法测定averm ectin在甲醇、乙醇、正丙醇、正丁醇和正戊醇中的溶解度曲线,并分别用理想溶液模型、A pe l-b lat溶解度模型和多项式经验方程对实验测定溶解度数据进行关联。结果显示理想溶液模型的误差较大,多项式经验方程的误差最小。实验得到的溶解度曲线及关联结果对averm ectin结晶工艺的研究具有较大的指导意义。展开更多
Penicillin hydrolysis by penicillin acylase was carried out in reversed micelle with [C14mim]Cl ionic liquids. The experi ment indicated that this catalytic reaction showed better performance in enzymat ic solubility,...Penicillin hydrolysis by penicillin acylase was carried out in reversed micelle with [C14mim]Cl ionic liquids. The experi ment indicated that this catalytic reaction showed better performance in enzymat ic solubility, activity and stability than the reaction in reversed micelle with cetyl trimethyl ammonium bromide （CTAB）. For example, the maximum solubility of penicillin acylase in ionic liquids system was twice more than that in CTAB, an d the maximal enzymatic activity in ionic liquids was 1.3 times than that in CT AB.The outstanding properties of ionic liquids, including low charge density and irregular sharpness of head ring,might be attributable to its distinct head gro up. Ionic liquids made it possible to optimize the enzymatic catalysis in rever sed micelle through altering its interfacial structure effectively.展开更多
文摘Penicillin hydrolysis by penicillin acylase was carried out in reversed micelle with [C14mim]Cl ionic liquids. The experi ment indicated that this catalytic reaction showed better performance in enzymat ic solubility, activity and stability than the reaction in reversed micelle with cetyl trimethyl ammonium bromide （CTAB）. For example, the maximum solubility of penicillin acylase in ionic liquids system was twice more than that in CTAB, an d the maximal enzymatic activity in ionic liquids was 1.3 times than that in CT AB.The outstanding properties of ionic liquids, including low charge density and irregular sharpness of head ring,might be attributable to its distinct head gro up. Ionic liquids made it possible to optimize the enzymatic catalysis in rever sed micelle through altering its interfacial structure effectively.
