کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10235474 | 45044 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Total solubilisation of the chicken feathers by fermentation with a keratinolytic bacterium, Bacillus pumilus A1, and the production of protein hydrolysate with high antioxidative activity
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
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چکیده انگلیسی
A feather protein hydrolysate was effectively produced using the keratinolytic bacterium Bacillus pumilus strain A1. In fact, complete feather degradation was achieved in medium containing up to 50 g/l of raw feathers. Cultivation of 50 g/l of feathers for two days, at 45 °C and at initial pH of 10.0, resulted in maximum production of amino acids and peptides (42.4 g/l). The feather protein hydrolysate (FPH) presents a very high in vitro digestibility (98%) compared with that of the untreated feathers (2%). Furthermore, the antioxidant activities of FPH were evaluated using in vitro antioxidant assays, such as 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activity and reducing power. Interestingly, FPH presents an important antioxidant potential with an IC50 value of 0.3 ± 0.01 mg/ml. These results indicate that FPH may be useful as supplementary protein and antioxidants in animal feed formulations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Process Biochemistry - Volume 46, Issue 9, September 2011, Pages 1731-1737
Journal: Process Biochemistry - Volume 46, Issue 9, September 2011, Pages 1731-1737
نویسندگان
Nahed Fakhfakh, Naourez Ktari, Anissa Haddar, Ibtissem Hamza Mnif, Ines Dahmen, Moncef Nasri,