کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5512645 | 1540221 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pasting and thermal properties of waxy corn starch modified by 1,4-α-glucan branching enzyme
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Pasting and thermal properties of waxy corn starch modified by 1,4-α-glucan branching enzyme Pasting and thermal properties of waxy corn starch modified by 1,4-α-glucan branching enzyme](/preview/png/5512645.png)
چکیده انگلیسی
Waxy corn starch was modified with the 1,4-α-glucan branching enzyme (GBE) from Geobacillus thermoglucosidans STB02. Incubating waxy corn starch with GBE increased the number of α-1,6 branch points and reduced the average chain length. Enzymatic modification also decreased the breakdown and setback values of Brabender viscosity curves, indicating that the modified starch had higher paste stability. Preheating the starch at 65 °C for 30 min before incubation with GBE could promote enzymatic modification of starch. Linear regression was used to describe the relationships between starch structure and its pasting and thermal properties. The setback value showed a negative linear correlation with the α-1,6 branch point content (R2 = 0.9824) and a positive linear correlation with the average chain length (R2 = 0.8954). Meanwhile, the gelatinization enthalpy was also linearly correlated to the α-1,6 branch point content (R2 = 0.9326) and the average chain length (R2 = 0.8567). These insights provide a useful reference for food processors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 97, April 2017, Pages 679-687
Journal: International Journal of Biological Macromolecules - Volume 97, April 2017, Pages 679-687
نویسندگان
Junyan Ren, Yang Li, Caiming Li, Zhengbiao Gu, Li Cheng, Yan Hong, Zhaofeng Li,