کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1986923 1540258 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of chitooligosaccharides from cicada slough and their antibacterial activity
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Preparation of chitooligosaccharides from cicada slough and their antibacterial activity
چکیده انگلیسی

In this study, chitooligosaccharides were prepared from cicada slough of Cryptotympana atrata Fabricius by hydrolysis using hydrogen peroxide (H2O2). Factors affecting the hydrolysis of chitosan were investigated and the optimum hydrolysis conditions were as follows: time, 4 h; temperature, 65 °C; amount of H2O2, 2% (v/v); and pH, 5. Under these conditions, the average degree of polymerisation decreased to ∼4.5. The Fourier transform infrared spectra and product sugar composition indicate that there were no significant chemical changes in the backbones of the chitosan treated with H2O2.The chitooligosaccharides had high antibacterial activity against Bacillus subtilis, Staphylococcus aureus, and Escherichia coli at the concentration of 100 mg/mL.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 62, November 2013, Pages 348–351
نویسندگان
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