Alkaline environments benefit microbial K-strategists to efficiently utilize protein substrate and promote valorization of protein waste into short-chain fatty acids
文献类型：期刊论文
| 作者 | Wang, Xu; Zhang, Ya; Li, Yanbo; Luo, Yu-Li; Pan, Yi-Rong; Liu, Junxin; Butler, David |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2021-01-15 |
| 卷号 | 404页码:- |
| 关键词 | Protein waste Pretreatment Fermentation Short chain fatty acids Microbial community structure r-K life history theory |
| ISSN号 | 1385-8947 |
| 英文摘要 | Anaerobic bioconversion of protein into short-chain fatty acids (SCFAs) can help reduce the vast quantities of protein waste generated currently and provide precursors for biorefineries of value-added, renewable chemicals or fuels. However, low yields of SCFAs during this process have limited its application, since the underlying mechanism is not fully understood. Herein, we investigated the chemical and microbiological mechanisms of a combined heat-alkaline pretreatment and anaerobic alkaline fermentation scheme for protein conversion to SCFAs. A series of chemical analyses indicated that heat-alkaline pretreatment fragmented native proteins and induced protein unfolding, thus increasing the amount of readily biodegradable proteins. Further, microbial characterization, using the r-K life history theory, indicated that microbial K-strategists, such as Proteobacteria, have adapted to the alkaline fermentation environment and enriched the process of converting protein substrates, which corresponded to an improved acetate production. We also evaluated the technological and economic feasibility of utilizing Proteiniphilum acetatigenes to augment the process of SCFA generation from sewage sludge (a protein-rich waste). Our findings demonstrated the influence of chemical and biological process manipulations on microbial assembly structures and ecological strategies, supporting the further development of waste-to-profit technologies. |
| WOS研究方向 | Engineering, Environmental ; Engineering, Chemical |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46017]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Univ Exeter, Coll Engn Math & Phys Sci, Dept Engn, Ctr Water Syst, Exeter EX4 4QF, Devon, England 2.Univ Oklahoma, Sch Civil Engn & Environm Sci, Norman, OK 73019 USA 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 4.Chinse Acad Sci, Res Ctr Ecoenvironm Sci, Yangtze River Delta Branch, Yiwu 322000, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Univ Oklahoma, Dept Microbiol & Plant Biol, Inst Environm Genom, Norman, OK 73019 USA |
| 推荐引用方式 GB/T 7714 | Wang, Xu,Zhang, Ya,Li, Yanbo,et al. Alkaline environments benefit microbial K-strategists to efficiently utilize protein substrate and promote valorization of protein waste into short-chain fatty acids[J]. CHEMICAL ENGINEERING JOURNAL,2021,404:-. |
| APA | Wang, Xu.,Zhang, Ya.,Li, Yanbo.,Luo, Yu-Li.,Pan, Yi-Rong.,...&Butler, David.(2021).Alkaline environments benefit microbial K-strategists to efficiently utilize protein substrate and promote valorization of protein waste into short-chain fatty acids.CHEMICAL ENGINEERING JOURNAL,404,-. |
| MLA | Wang, Xu,et al."Alkaline environments benefit microbial K-strategists to efficiently utilize protein substrate and promote valorization of protein waste into short-chain fatty acids".CHEMICAL ENGINEERING JOURNAL 404(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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