Moisture sorption isotherms and isosteric heat determination in Chilean papaya (Vasconcellea pubescens)

Química Nova

Universidad de La Serena, La Serena, Chile¹  Vega-Gálvez, Antonio¹  Palacios, Marlene¹  Passaro, Catarina¹  Corporación Colombiana de Investigaciones Agrarias, Antioquía, Colombia¹  Lemus-Mondaca, Roberto¹ 

关键词: Chilean papaya;    sorption isotherms;    isosteric heat.;   

DOI  :  10.1590/S0100-40422008000600026

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The moisture sorption isotherms of Chilean papaya were determined at 5, 20, and 45 ºC, over a relative humidity range of 10-95%. The GAB, BET, Oswin, Halsey, Henderson, Smith, Caurie and Iglesias-Chirife models were applied to the sorption experimental data. The goodness of fit of the mathematical models was statistically evaluated by means of the determination coefficient, mean relative percentage deviation, sum square error, root-mean-square error, and chi-square values. The GAB, Oswin and Halsey models were found to be the most suitable for the description of the sorption data. The sorption heats calculated using the Clausius-Clapeyron equation were 57.35 and 59.98 kJ·mol-1, for adsorption and desorption isotherms, respectively.

【 授权许可】

Unknown