کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6405149 1330912 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modification of bean starch by γ-irradiation: Effect on functional and morphological properties
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
Modification of bean starch by γ-irradiation: Effect on functional and morphological properties
چکیده انگلیسی

Starches isolated from Red, White, Yellow and Black Kidney beans were treated by γ-irradiation doses of 5, 10 and 20 kGy. Physicochemical, morphological and pasting properties of irradiated bean starches were investigated. Microscopic observation under scanning electron microscope (SEM) showed that some of the bean starch granules were destroyed by γ-irradiation and the breakage was greater at a higher dose (20 kGy). Physicochemical properties differed significantly and showed strong dose-dependent relationship. Carboxyl content, solubility, water absorption capacity and transmittance increased, whereas swelling power, apparent amylose content, syneresis and pasting properties decreased upon the irradiation of kidney bean starch. Radiation doses were positively correlated with water absorption capacity and solubility index and negatively correlated with swelling index, peak viscosity, trough viscosity, breakdown and final viscosity. There were high positive correlations between pasting properties. X-ray diffraction pattern remained same upon irradiation but a decrease in crystallinity was observed with increasing irradiation dose.

► Starches extracted from four types of beans were exposed to γ-irradiation. ► Carboxyl content, solubility, water absorption capacity and transmittance increased. ► Swelling power, apparent amylose content, syneresis and pasting properties decreased. ► X-ray diffraction showed a decrease in crystallinity upon irradiation. ► SEM showed cracking of starch granules by γ-irradiation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: LWT - Food Science and Technology - Volume 49, Issue 1, November 2012, Pages 162-169
نویسندگان
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