کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8326768 | 1540195 | 2018 | 40 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Construction of long-chain alkane degrading bacteria and its application in bioremediation of crude oil pollution
ترجمه فارسی عنوان
ساختن باکتری های تخریب کننده آلکالای زنجیره ای و کاربرد آن در بهبود زیست محیطی آلودگی نفت خام
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
In this study, a cloned almA gene was inserted into two plasmids PUC57 and pet-28a (+), and then transformed into Escherichia coli competent strains. The presence of almA was confirmed by PCR combined with restriction enzyme digestion. The results indicated two strains of PUC57/almA-E. coli and pet-28a (+)/almA-E. coli were all functioned on biodegradation long-chain alkanes, however, pet-28a (+)/almA-E. coli strain performed better and the speed of biodegradation was enhanced to about 12â¯mgâ¯Lâ1â¯hâ1 when compared with PUC57/almA-E. coli strain. Furthermore, degradation degree of n-C32 was much higher than other long-chain alkanes for two engineered E. coli strains. Our results further suggested that exoenzyme was only detected in pet-28a (+)/almA-E. coli and followed a decreasing order of extracellular enzymeâ¯>â¯intracellular enzymeâ¯>â¯periplasmic enzyme. Besides, co-biodegradation of petroleum hydrocarbons by Pseudomonas sp. B-1, Bacillus subtilis PH-1 with exoenzyme or pet-28a (+)/almA-E. coli posed enormous potential that could reach 70%-80% in oil pollution bioremediation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 119, November 2018, Pages 524-532
Journal: International Journal of Biological Macromolecules - Volume 119, November 2018, Pages 524-532
نویسندگان
Long Meng, Mutai Bao, Peiyan Sun,