Effects of Flavor Compounds Concentrations and External Temperatures on Absorption by LDPE

Abstract:

Absorption amount of LDPE film on different kinds of flavor compounds （n-hexanal，butyl acetate，2-heptanone，octyl alcohol），and the influence of different levels of initial concentrations of flavor compounds as well as different storage temperatures on the polymers absorption properties were investigated by using GC method. The results showed that the absorption amount of LDPE on all flavor compounds were increased with a rise of initial concentrations. The external temperature was important by affecting the absorption progress. High temperature would accelerate the motilities of molecules resulting in higher degrees of absorption. However， high temperature also altered the solubility of flavor compounds in the water with a result of decrease in amount of absorption.