کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1987057 1540265 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact of α-amylase combined with hydrochloric acid hydrolysis on structure and digestion of waxy rice starch
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Impact of α-amylase combined with hydrochloric acid hydrolysis on structure and digestion of waxy rice starch
چکیده انگلیسی

The structure and in vitro digestibility of native waxy rice starch by the combined hydrolysis of α-amylase and hydrochloric acid were investigated in this study. The combined hydrolysis technique generated higher hydrolysis rate and extent than the enzymatic hydrolysis. The granular appearance and chromatograph profile demonstrated that α-amylase and hydrochloric acid exhibited different patterns of hydrolysis. The rise in the ratio of absorbance 1047/1022 cm−1, the melting temperature range (Tc–To), and the melting enthalpy (ΔH) were observed during the combined hydrolysis. These results suggest that α-amylase simultaneously cleaves the amorphous and crystalline regions, whereas the amorphous regions of starch granules are preferentially hydrolyzed during the acid hydrolysis. Furthermore, the combined hydrolysis increased rapidly digestible starch (RDS) while decreased slowly digestible starch (SDS) and resistant starch (RS), indicating that the hydrolysis mode affected the digestion property of native waxy rice starch.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 55, April 2013, Pages 276–281
نویسندگان
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