Modelling the effect of temperature on the water sorption isotherms of chitosan films

被引：23

作者：

Aguirre-Loredo, Rocio Yaneli ^{[1
]}

Ines Rodriguez-Hernandez, Adriana ^{[2
]}

Velazquez, Gonzalo ^{[1
]}

机构：

[1] Inst Politecn Nacl, Ctr Invest Ciencia Aplicada & Tecnol Avanzada, Unidad Queretaro, Queretaro, Qro, Mexico

[2] Univ Autonoma Estado Hidalgo, Inst Ciencias Agropecuarias, Tulancingo, Hidalgo, Mexico

来源：

FOOD SCIENCE AND TECHNOLOGY | 2017年 / 37卷 / 01期

关键词：

chitosan film; moisture adsorption isotherm; GAB model; MOISTURE; DESORPTION; STORAGE; PERMEABILITY; PLASTICIZERS; ADSORPTION; FOODS;

D O I：

10.1590/1678-457X.09416

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

The interaction of the water molecules from the environment with foods and other materials can be evaluated using sorption isotherms. Films and biodegradable films are susceptible to changes in their functional characteristics due to adsorbed water. The amount of moisture that biodegradable films can adsorb depends on the temperature, relative humidity of the storage area and chemical composition. Several mathematical models can be used to describe the behavior of sorption isotherms in biodegradable films and some of them have been modified to include the temperature parameter into the equation. In this research, the original and modified BET, GAB, Halsey, Henderson and Oswin models were assessed to determine their suitability describing the behavior of moisture adsorption isotherms of chitosan films at 15, 20, 25 and 30 degrees C. The modified models of GAB, Oswin and Halsey gave the best fit to the experimental sorption data of the chitosan films, with R-2 values higher than 0.97 demonstrating that those models describe better the sorption isotherms at the temperatures studied.

引用

页码：112 / 118

页数：7

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