一种微孔保鲜膜透气性测定装置及测定方法  

A Device for Measurement of Gas Permeation Rate of Micro-porous Wrapping Film and Its Usage

作　　者：纪淑娟[1] 关莹[1] 李家政[2] 张平[2] 

机构地区：[1]沈阳农业大学食品学院,沈阳110161 [2]国家农产品保鲜工程技术研究中心天津市农产品采后生理与储藏保鲜重点实验室,天津300183

出　　处：《食品工业》2008年第3期55-56,共2页The Food Industry

摘　　要：一种结构简易的保鲜膜透气性测定装置,适合测量微孔保鲜膜的CO2和O2渗透系数。该装置由一个圆柱形玻璃杯体、密封件和杯内气体混合组成。定时测定杯内CO2浓度(%),以CO2浓度的自然对数值对时间做图,从所得直线的斜率可以算出膜的CO2渗透系数。O2的渗透系数可由类似方法测定。A new device which suits for measuring the O2 and CO2 permeation rate of micro-porous wrapping film is introduced in this paper. This device is composed of a cylinder-shaped glass cup, an airproof part and an air mixing component, Measuring the CO2 content（C1） in different time and plotting In C1 with time we get a line, and from the slope of the line, we get the CO2 permeation coefficient. O2 permeation coefficient can be got in similar way.

关 键 词：微孔 保鲜膜 渗透系数 测定装置 

分 类 号：TS206[轻工技术与工程—食品科学]