铁锰氧化物提高巴斯德梭菌电子输出率

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 海岸带生物学与生物资源利用重点实验室 > 海岸带生物学与生物资源利用所重点实验室

	铁锰氧化物提高巴斯德梭菌电子输出率
	刘进超 1,2; 刘芳华 1; 张月超 1,2; 孟德龙 3; 王学明 3; 肖雷雷 1
刊名	微生物学通报
	2020
卷号	47 期号:1 页码:24-34
关键词	巴斯德梭菌电子输出率电化学活性铁锰氧化物异化金属还原发酵
ISSN号	0253-2654
其他题名	Iron and manganese oxides enhance electron output efficiency of Clostridium pasteurianum
文献子类	Article
英文摘要	[Background] Fermentative dissimilatory metal-reducing bacteria, which are capable of reducing metallic oxides, get energy from fermentation. Little is known about how metallic oxides affect electron output efficiency of fermentative dissimilatory metal-reducing microorganisms. [Objective] This study was conducted to explore the influence of iron and manganese oxides (Fe_2O_3/MNO_2) on electron output efficiency. [Methods] Different concentrations of Fe_2O_3/MNO_2 were added into fermented system containing glucose and inoculated 5% C. pasteurianum. Electrochemical activity of C. pasteurianum was detected. The concentrations of Fe(Ⅱ) and Mn(Ⅱ) were measured by ferrozine spectrophotometry and formaldoxime method. Fermentation substrate and metabolites of C. pasteurianum were detected by gas chromatography and high performance liquid chromatography. Lastly, we calculated the electron output efficiency. [Results] The current density peaked with the value of about 0.93 mA/m~2. The concentrations of Fe(Ⅱ) and Mn(Ⅱ) gradually accumulated. The consumption of glucose was increased by 9.4%/7.7%, Meanwhile, acetate production was increased by 37.5%/25.0%, and butyrate production was increased by 22.7%/6.8%. Additionally, hydrogen production was increased by 21.6%/9.8%, and the total electron output efficiency was increased by 24.27%/10.82%, respectively. The pH values between experimental group and control are no significant difference. [Conclusion] This study shows that iron and manganese oxides can improve the electron output efficiency of C. pasteurianum by increasing glucose consumption and buffering pH value. The results provide evidence for revealing the effects of multivalent metal oxides on the electron output of fermentative dissimilatory metal-reducing bacteria, and further expand our understanding of the interaction mechanism between multivalent metal oxides and fermentative dissimilatory metal-reducing bacteria.
语种	中文
CSCD记录号	CSCD:6673572
资助机构	国家自然科学基金 ; 中国科学院科学号高端用户项目 ; 山东省自然科学杰出青年基金 ; 泰山学者青年专家计划
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/30380]
专题	烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
作者单位	1.中国科学院烟台海岸带研究所海岸带生物学与生物资源利用重点实验室,山东烟台264003; 2.中国科学院大学,北京100049; 3.中国农业大学烟台研究院,山东烟台264670
推荐引用方式 GB/T 7714	刘进超,刘芳华,张月超,等. 铁锰氧化物提高巴斯德梭菌电子输出率[J]. 微生物学通报,2020,47(1):24-34.
APA	刘进超,刘芳华,张月超,孟德龙,王学明,&肖雷雷.(2020).铁锰氧化物提高巴斯德梭菌电子输出率.微生物学通报,47(1),24-34.
MLA	刘进超,et al."铁锰氧化物提高巴斯德梭菌电子输出率".微生物学通报 47.1(2020):24-34.