کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10277910 | 464398 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Relationship between enthalpy relaxation and water sorption of ball-milled potato starch
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Relationship between enthalpy relaxation and water sorption of ball-milled potato starch Relationship between enthalpy relaxation and water sorption of ball-milled potato starch](/preview/png/10277910.png)
چکیده انگلیسی
This study reports on the enthalpy relaxation and water sorption behaviors of ball-milled potato starch. Ball milling converts the semi-crystalline state of starch to an amorphous state, and a prolonged procedure promotes enthalpy relaxation. It has been reported that prolonged treatment leads to a decrease in starch water sorption. In the present study, ball milling of potato starch was carried out for up to 90Â h. The relaxed enthalpies and water sorption isotherms were measured by differential scanning calorimetry and equilibrium sorption of water vapor. Enthalpy was found to increase and water sorption to decrease with milling time. The time-dependant increase in enthalpy was found to follow the Kohlrausch-Williams-Watts (KWW) equation. The sorption isotherms were analyzed with a dual-mode sorption model and the concentration, CHâ², of Langmuir type sorption sites was found to decrease with time. This decrease was also found to follow the KWW equation. Moreover, a linear relationship was found between the decrease in CHâ² and the increase in enthalpy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 104, Issue 1, May 2011, Pages 43-48
Journal: Journal of Food Engineering - Volume 104, Issue 1, May 2011, Pages 43-48
نویسندگان
Mayumi Anzai, Tomoaki Hagiwara, Manabu Watanabe, Jiro Komiyama, Toru Suzuki,