کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4980016 | 1367818 | 2017 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Degradation of tetracycline by immobilized laccase and the proposed transformation pathway
ترجمه فارسی عنوان
تخریب تتراسایکلین توسط لاکتوز مکمل و پیشرفت پیشنهادی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
Magnetic cross-linked enzyme aggregates (M-CLEAs) were prepared for Cerrena laccase and used in antibiotic treatment. Of the seven antibiotics examined in this study, Cerrena laccase M-CLEAs were most effective in degradation of tetracycline (TC) and oxytetracycline (OTC), followed by ampicillin, sulfamethoxazole and erythromycin. The redox mediator ABTS was not able to improve efficiencies of degradation of TC and OTC. Cerrena laccase at 40 U/mL eliminated 100 μg/mL TC at pH 6 and 25 °C in 48 h in the absence of a redox mediator, with over 80% degradation occurring within the first 12 h. Laccase treatment also significantly suppressed the antimicrobial activity of TC and OTC. Three TC transformation products, the levels of which initially increased and subsequently decreased during laccase treatment were identified by using LC-TOF MS. A mechanism of laccase-mediated TC oxidation was proposed based on the identified intermediates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 322, Part B, 15 January 2017, Pages 525-531
Journal: Journal of Hazardous Materials - Volume 322, Part B, 15 January 2017, Pages 525-531
نویسندگان
Dr. Yang, Yonghui Lin, Xiaodan Yang, Tzi Bun Ng, Xiuyun Ye, Dr. Lin,