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纳他霉素在水和甲醇中溶解度的测定与关联
引用本文:骆健美,金志华,岑沛霖,王敏. 纳他霉素在水和甲醇中溶解度的测定与关联[J]. 化工学报, 2008, 59(2): 281-286
作者姓名:骆健美  金志华  岑沛霖  王敏
作者单位:浙江大学宁波理工学院生物与制药工程系,浙江大学材料与化学工程学院化学工程与生物工程学系,天津科技大学生物工程学院,天津市工业微生物重点实验室
基金项目:浙江省重大科技攻关项目(2004C13007),天津科技大学引进人才科研启动基金项目(20060426),天津市应用基础研究计划面上项目(07JCYBJC07800),国际科学基金(F/4239-1)~~
摘    要:平衡法测定了纳他霉素在纯水(278.2~341.2 K)、甲醇(278.2~313.2 K)和不同水-甲醇比例混合溶剂(278.2~308.2 K)中的溶解度。采用人工神经网络对纳他霉素在纯水和甲醇中的溶解度数据进行关联,效果令人满意。纳他霉素在不同水-甲醇比例混合溶剂中的溶解度随温度的升高而增加,随水比例的增加而减少。采用非线性最小二乘法将实验数据关联为λh方程的形式,取得较好的效果,其中,λ、h可表达为水-甲醇比例的函数,用于内插计算,精度满足工程需要。实验得到的溶解度数据和关联结果对纳他霉素结晶工艺的研究具有较大的指导意义。

关 键 词:纳他霉素  溶解度  平衡法  人工神经网络  λh方程  
文章编号:0438-1157(2008)02-0281-06
收稿时间:2007-07-18
修稿时间:2007-10-26

Determination and correlation of natamycin solubilities in water and methanol
LUO Jianmei,JIN Zhihua,CEN Peilin,WANG Min. Determination and correlation of natamycin solubilities in water and methanol[J]. Journal of Chemical Industry and Engineering(China), 2008, 59(2): 281-286
Authors:LUO Jianmei  JIN Zhihua  CEN Peilin  WANG Min
Abstract:The solubility data of natamycin in pure water (278.2—341.2 K), methanol (278.2—313.2 K) and water-methanol mixture (278.2—308.2 K) were experimentally determined by the equilibrium method.The data in pure water and methanol were well correlated by artificial neural network.It was found that the solubilities of natamycin in the water-methanol mixture increased with the increase of temperature but decreased with the increase of water content.The solubility data were also well correlated in the form of λh equation by the nonlinear least square technique.The parameters λ and h were expressed by the function of water-methanol ratio.The results by interpolating calculation were satisfactory to some degree, which can be used in the industrial crystallization technology of natamycin.
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