کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4996560 | 1368271 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of carbon source on methanogenic activities and pathways incorporating metagenomic analysis of microbial community
ترجمه فارسی عنوان
اثرات منبع کربن بر فعالیت های متانوژنیک و مسیرهای آن شامل تجزیه و تحلیل متابولیسم جامعه میکروبی است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
In this study, the effects of four types of organic compounds (tryptone, acetate/propionate, glucose and ethanol) on methanogenesis, electron transfer processes and microbial community structure were examined. When tryptone and acetate/propionate were used, the dominant methanogenic pathway was aceticlastic methanogenesis and Methanosarcina was the most abundant methanogen. When glucose or ethanol were provided as the external carbon source, the aceticlastic and hydrogenotrophic pathways were utilised simultaneously, and Methanosarcina and Methanobacterium were enriched. However, the reactor fed with glucose was prone to acidification because volatile fatty acids accumulated in the medium, which inhibited methane synthesis. Geobacter was dominant in the reactor fed with ethanol and 45% of genes encoding pili synthesis were attributable to Geobacter, indicating that direct interspecies electron transfer may be a possible mechanism during syntrophic methanogenesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 244, Part 1, November 2017, Pages 982-988
Journal: Bioresource Technology - Volume 244, Part 1, November 2017, Pages 982-988
نویسندگان
Lizhen Xing, Shuo Yang, Qidong Yin, Sihuang Xie, Peter James Strong, Guangxue Wu,