<P><B>Abstract</B></P> <P>Volatile fatty acid (VFA) production, utilization of soluble organic compounds, and associated microbial consortia were investigated after different pretreatments (untreated, alkaline, and therm...
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https://www.riss.kr/link?id=A107456020
2018
-
SCOPUS,SCIE
학술저널
306-311(6쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Abstract</B></P> <P>Volatile fatty acid (VFA) production, utilization of soluble organic compounds, and associated microbial consortia were investigated after different pretreatments (untreated, alkaline, and therm...
<P><B>Abstract</B></P> <P>Volatile fatty acid (VFA) production, utilization of soluble organic compounds, and associated microbial consortia were investigated after different pretreatments (untreated, alkaline, and thermal-alkaline) using cyanobacterial biomass as a substrate. Compared to the untreated control, soluble carbohydrate concentrations were almost the same after alkaline and thermal-alkaline pretreatments, but soluble protein concentration was 1.58 times higher after alkaline pretreatment and 1.81 times higher after thermal-alkaline pretreatment. However, the highest degree of acidification was obtained after alkaline pretreatment (55.36 ± 3.00%). Microbial communities in the untreated control differed only slightly from those after thermal-alkaline pretreatment, but were clearly distinct from those after alkaline pretreatment. After alkaline pretreatment, protein-utilizing bacteria became relatively predominant. These results revealed the relationships between efficiency of VFA production and the shift in microbial community.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Alkali-pretreated biomass enhanced the degree of acidification. </LI> <LI> Dominant phyla were <I>Firmicutes</I>, <I>Bacteroidetes</I>, <I>Chloroflexi</I>, and <I>Proteobacteria.</I> </LI> <LI> The highest microbial diversity was identified after alkaline pretreatment. </LI> <LI> The microbial communities after alkaline pretreatment were clearly distinguished. </LI> </UL> </P>
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