Journal
BIORESOURCE TECHNOLOGY
Volume 203, Issue -, Pages 1-10Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.12.040
Keywords
Integrated meta-omics; Lignocellulose degradation; Fermentor compost; Microbial community; Organic wastes
Funding
- National High Technology Research and Development Program of China [2012AA10180402]
- Major National Science and Technology Projects [2013ZX10004217]
- Fundamental Research Funds of Shandong University [2015YQ004]
- Natural Science Foundation of Shandong Province [ZR2013CM038]
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The dynamic changes in the composition and function of both bacterial and fungal communities over time and at various depths in the compost of a 90-m(3) industrial-scale fermentor were explored using integrated meta-omics. The microbial communities in the middle layer (1.2 m) of the compost developed a stable and simple structure over time, which was mainly composed of Thermobifida, Bacillus, Thermomyces and Aspergillus. According to the metaproteomic results, the bacterial community was more focused on cellulose degradation, characterized by 44% of the cellulases that were secreted by Thermobifida, while the fungal community was more likely to degrade hemicellulose, mainly via Thermomyces and Aspergillus. The results revealed that, under artificial control of the temperature and oxygen concentration, the efficiency of organic waste degradation was greatly increased and the fermentation cycle was shortened to 11 days. (C) 2015 Elsevier Ltd. All rights reserved.
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