Drying Temperature Affect Secondary Structure of Soybean Protein-lsolate/Carboxymethyl Cellulose/Stearic Acid Composite Films

摘要

The effect of the drying temperature on the secondary structure of the soybean protein-isolate/carboxymethyl cellulose/stearic acid composite films was evaluated. The Fourier transform-infrared spectra showed that the stearic acid lose some characteristic absorptions. Hence, the stearic acid was well integrated with the other ingredients. The absorption band (1600-1700 cm~(-1)) of the composite film was deconvoluted into 9 peaks for the calculation of their secondary structure. The p-sheet content of the composite films dried at 90 °C was significant higher than that of the control. Hence, the composite films dried at 90 °C was more stable than the control.