KGM/纳米ZnO复合膜透湿性工艺优化  

Optimization of Moisture Permeability of KGM/nano-ZnO Composite Film

作　　者：韦巧艳 柳富杰 李大成 成清岚 覃逸明 WEI Qiaoyan;LIU Fujie;LI Dacheng;CHENG Qinglan;QIN Yiming(College of Food&Biochemical Engineering,Guangxi Science&Technology Normal University,Laibin 546199;Department of Science Management,Guangxi Science&Technology Normal University,Laibin 546199)

机构地区：[1]广西科技师范学院食品与生化工程学院,来宾546199 [2]广西科技师范学院科研管理处,来宾546199

出　　处：《食品工业》2020年第5期99-103,共5页The Food Industry

基　　金：2016年度广西高校中青年教师基础能力提升项目(KY2016YB557);广西糖资源工程技术研究中心培育建设(桂科AD16450040);广西高校制糖工程综合技术重点实验室培育建设(桂教科研[2016]6号)。

摘　　要：以魔芋葡甘露聚糖(KGM)为基料,利用纳米ZnO对其进行共混改性,制备KGM/纳米ZnO复合膜,在单因素试验基础上,以纳米ZnO浓度、甘油浓度、反应时间为主要影响因素,以水蒸气透过系数(WVP)为响应值,采用Box-Behnken响应面法对KGM/纳米ZnO复合膜的制备工艺进行优化。结果表明,纳米ZnO浓度对复合膜WVP的影响不显著,甘油浓度和反应时间对复合膜WVP的影响显著, KGM/纳米ZnO复合膜的最佳工艺条件为:纳米ZnO浓度0.60%、甘油浓度0.68%、反应时间61 min。在此条件下制得的复合膜的水蒸气透过系数为0.082 2 g·mm/(m^2·h·k Pa)。Konjac glucomannan(KGM) was modified by nano-ZnO to prepare KGM/nano-ZnO composite film. On the basis of single factor experiments, the Box-Behnken response surface method was adopted to optimize the nano-ZnO concentration, glycerol concentration and reaction time by measuring the water vapor transmittance(WVP). The results showed that the nanometer ZnO concentration impact on the water vapor permeability of KGM/nano-ZnO composite film was not significant, and glycerol concentration and reaction time on WVP were significant. The optimum technological condition for KGM/nanoZn O composite film was as follows: the nanometer ZnO concentration 0.60%, the glycerol concentration 0.68%, and the reaction time 61 min. Under the optimal extraction condition, the water vapor permeability of the composite film was 0.082 2 g·mm/(m^2·h·k Pa).

关 键 词：魔芋葡甘露聚糖(KGM) 纳米ZNO 水蒸气透过系数 复合膜 

分 类 号：TS206.4[轻工技术与工程—食品科学]