کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
225056 464473 2008 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of high pressure on some physicochemical properties of several native starches
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of high pressure on some physicochemical properties of several native starches
چکیده انگلیسی

The impact of high pressure treatments (HPT) on some physicochemical properties of normal corn, waxy corn, wheat, and potato starches were studied. Three high pressure treatments were applied: HPT1 (740–880 MPa from 5 min to 2 h), HPT2 (960–1100 MPa for 24 h) and HPT3 (1500 MPa for 24 h). Using differential scanning calorimetry (DSC), it was found that the gelatinization temperature of starch was lowered by 3.0–6.6 °C after high pressure treatment and the corresponding gelatinization enthalpy was also reduced. In addition, these changes were irreversible and maintained during storage at 25 °C for up to 6 months. However, the birefringence of native and high pressure treated starch was not visually different in polarized light. For starches of same biological origin, their X-ray diffraction patterns were also similar. Using scanning electron microscopy (SEM), it was revealed that the high pressure treatments altered the shape of starch granules and changed their surface appearance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 88, Issue 1, September 2008, Pages 126–136
نویسندگان
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