Chan Soon Park, Mi Sook Seo, Sun Young Jung, Boram Park, Shin Young Park
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Effects of soy defatting on texturization of texturized vegetable proteins
In this study, the quality characteristics of texturized vegetable proteins (TVP) produced from defatted soy flour (DSF) were analytically compared with those of texturized vegetable proteins produced with isolated soy protein (ISP) and non-defatted soy flour (SF). The base raw material formulation consisted of 50% soy proteins, 30% gluten, and 20% corn starch. A cooling die-equipped extruder was used with a barrel temperature set at 190°C and screw rotation speed of 250 rpm. With respect to the hardness of isolate soy proteins, that of soy flour and defatted soy flour was 22.4% and 68.8%, respectively, and gumminess was 17.6% and 44.3%, respectively. Defatting increased chewiness, shear strength, and springiness. Moisture content was higher in soy flour than in defatted soy flour, while there were no significant differences in terms of water absorption and turbidity. The pH was higher with soy flour than with defatted soy flour. Concerning color, the L and b values were higher with soy flour, while the a value was higher with defatted soy flour. These results suggest that defatting soybeans can improve the quality of plant-based proteins. Further research is needed to address the quality differences from those of isolated soy proteins.
期刊介绍:
This journal aims to promote and encourage the advancement of quantitative improvement for the storage, processing and distribution of food and its related disciplines, theory and research on its application. Topics covered include: Food Preservation and Packaging Food and Food Material distribution Fresh-cut Food Manufacturing Food processing Technology Food Functional Properties Food Quality / Safety.