کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8334245 1540271 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvement of antioxidant activity of peptides with molecular weights ranging from 1 to 10 kDa by PEF technology
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Improvement of antioxidant activity of peptides with molecular weights ranging from 1 to 10 kDa by PEF technology
چکیده انگلیسی
Egg white protein powder was hydrolyzed with Alcalase to produce antioxidant peptides. Then, the peptides were fractionated with ultrafiltration membranes. The peptides (1-10 kDa) were further treated by pulsed electric field (PEF) to investigate its effect on the antioxidant activity of the peptides. Antioxidant activity was evaluated using a 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical inhibition assay. The results indicated that optimal electric field intensity and standing times of PEF can enhance the antioxidant activity of the peptides. Therefore, a Box-Behnken design (BBD) with three independent variables including concentration, electric field intensity and pulse frequency was used to establish the regression equation of second-order response surface. The optimal conditions were as follows: concentration 8 mg/ml, electric field intensity 10 kV/cm and pulse frequency 2400 Hz. Under these conditions, the peptides antioxidant activity was 62.64% ± 0.98%. The present study demonstrated that the antioxidant activity of peptides (1-10 kDa) could be improved using PEF.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 51, Issue 3, October 2012, Pages 244-249
نویسندگان
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