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Citation
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HERO ID
7081023
Reference Type
Journal Article
Title
Development of a novel compound microbial agent for degradation of kitchen waste
Author(s)
Zhao, K; Xu, Rui; Zhang, Y; Tang, Hao; Zhou, C; Cao, A; Zhao, G; Guo, Hui; ,
Year
2017
Is Peer Reviewed?
Yes
Journal
Brazilian Journal of Microbiology
ISSN:
1517-8382
EISSN:
1678-4405
Publisher
SOC BRASILEIRA MICROBIOLOGIA
Location
SAO PAULO
Page Numbers
442-450
PMID
28279600
DOI
10.1016/j.bjm.2016.12.011
Web of Science Id
WOS:000407377400009
Abstract
Large quantities of kitchen waste are produced in modern society and its disposal poses serious environmental and social problems. The aim of this study was to isolate degradative strains from kitchen waste and to develop a novel and effective microbial agent. One hundred and four strains were isolated from kitchen waste and the 84 dominant strains were used to inoculate protein-, starch-, fat- and cellulose-containing media for detecting their degradability. Twelve dominant strains of various species with high degradability (eight bacteria, one actinomycetes and three fungi) were selected to develop a compound microbial agent "YH" and five strains of these species including H7 (Brevibacterium epidermidis), A3 (Paenibacillus polymyxa), E3 (Aspergillus japonicus), F9 (Aspergillus versicolor) and A5 (Penicillium d(i)gitatum), were new for kitchen waste degradation. YH was compared with three commercial microbial agents-"Tiangeng" (TG), "Yilezai" (YLZ) and Effective Microorganisms (EM), by their effects on reduction, maturity and deodorization. The results showed that YH exerted the greatest efficacy on mass loss which decreased about 65.87% after 14 days. The agent inhibited NH3 and H2S emissions significantly during composting process. The concentration of NH3 decreased from 7.1 to 3.2ppm and that of H2S reduced from 0.7 to 0.2ppm. Moreover, E-4/E-6 (Extinction value(460nm)/Extinction value(665nm)) of YH decreased from 2.51 to 1.31, which meant YH had an obvious maturity effect. These results highlighted the potential application of YH in composting kitchen waste. (C) 2017 Sociedade Brasileira de Microbiologia. Published by Elsevier Editora Ltda. All rights reserved.
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