کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1191102 963548 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of Alcalase/Protease N treatments on rice starch isolation and their effects on its properties
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Effects of Alcalase/Protease N treatments on rice starch isolation and their effects on its properties
چکیده انگلیسی

The effects of different protease treatments on rice starches and their properties were studied. The rice starches produced from protease N exhibited higher pasting viscosities than those produced from alcalase. The hot pastes of the starches produced from protease N also showed higher elastic moduli, zero-order Newtonian viscosities and yield stresses than those produced from alcalase. No differences were found in the crystalline pattern, thermal properties, granules appearance, and average molecular weight (Mw) of the rice starches between the two protease treatments. But the Mw of the pasted starch produced from protease N was higher than that produced from alcalase. When additional protease was added to the isolated starches and the mixture pasted, the Mw of the starches pasted with added alcalase was significant lower than that of the starches pasted with added protease N. The reduction in molecular weight suggested that alcalase had modified the starch molecules during pasting.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 114, Issue 3, 1 June 2009, Pages 821–828
نویسندگان
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