EVIDENCE FOR H-2 AND FORMATE FORMATION DURING SYNTROPHIC BUTYRATE AND PROPIONATE DEGRADATION

被引:88
作者
DONG, XZ
STAMS, AJM
机构
[1] Department of Microbiology, Wageningen Agricultural University, 6703 CT Wageningen
关键词
H-2; FORMATE; SYNTROPHIC DEGRADATION; BUTYRATE OXIDATION; PROPIONATE OXIDATION; INTERSPECIES ELECTRON TRANSFER; METHANOGENESIS;
D O I
10.1016/S1075-9964(95)80405-6
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Both H-2 and formate were formed during butyrate oxidation by Syntrophospora bryantii with pentenoate as electron acceptor and during propionate oxidation by a mesophilic propionate oxidizing bacterium (MPOB) with fumarate as electron acceptor. H-2 and formate levels were affected by the bicarbonate concentration. S bryantii and MPOB were also able to interconvert formate and H-2+HCO3-; the apparent K-M values for formate were of 2.9 mM and 1.8 mM, respectively. The conversion of H-2+HCO3- to formate was detected only when the H-2 partial pressure was above 80 kPa. This interconversion seems to be rather unimportant under conditions prevailing during syntrophic propionate and butyrate oxidation.
引用
收藏
页码:35 / 39
页数:5
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