کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8853399 | 1618901 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of pyrene degradation and metabolite identification by Basidioascus persicus and mineralization enhancement with bacterial-yeast co-culture
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
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چکیده انگلیسی
In this paper, we introduce pyrene degrader halotolerant yeast, Basidioascus persicus EBL-C16 and characterize its growth in different salt concentrations. Investigation of the removal of different concentrations of pyrene showed that B. persicus EBL-C16 was able to eliminate 50-90% of pyrene in the presence of 2.5% salt and also mineralize phenanthrene and anthracene. Growth and depletion kinetics of 500â¯mgâ¯Lâ1 of pyrene removal revealed 79% degradation and the growth rate reached 1.4â¯gâ¯Lâ1 of dry weight, decomposition constant rate was obtained as 0.074â¯dayâ1 and the half-life was 9.33 days. When minimal medium was replaced with Persian Gulf water, 48% increase in pyrene removal was detected by yeast strain. The mass spectrometry of the treated samples specified the phthalic acid pathway as the metabolic pathway of pyrene degradation by B. persicus. Study of the synergistic effect of using rhamnolipid and co-culture of yeast with Pseudomonas putida ATCC 12633 revealed that the combination of both of them with B. persicus increased 21% pyrene elimination. The findings of this study can be used to comprehend the mechanisms of oil hydrocarbon degradation by yeasts. Furthermore, the results demonstrated the promising potential of yeast-bacteria co-culture for cleaning of oil spills in marine and saline soil contaminated areas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 163, 15 November 2018, Pages 471-477
Journal: Ecotoxicology and Environmental Safety - Volume 163, 15 November 2018, Pages 471-477
نویسندگان
A. Kamyabi, H. Nouri, H. Moghimi,