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Enhancement of acid resistance of Scenedesmus dimorphus by acid adaptation
Jiang, Yinli; Peng, Xiaowei; Zhang, Wei; Liu, Tianzhong
2012-12-01
发表期刊JOURNAL OF APPLIED PHYCOLOGY
卷号24期号:6页码:1637-1641
摘要When using flue gas as carbon source for microalgae cultivation, the resulting acidic environment caused by SOX and NOX can inhibit microalgal growth. In this study, Scenedesmus dimorphus acquired increased acid resistance by prior exposure to sublethal acid stress; a process defined as acid adaptation. Among the five algal species tested, S. dimorphus showed the highest level of acid tolerance to extreme acid challenge (exposure to pH 3.0). Non-adapted and acid-adapted exponential algal cells were used as inocula for tubular photobioreactors aerated with 2 % CO2. Previously adapted at pH 4.0 for 1 h, S. dimorphus developed highest growth rate under extreme acidic condition, and the maximum biomass concentration and specific growth rate at pH 3.0 (3.638 ± 0.074 g L−1 and 1.037 ± 0.008 d−1, respectively) were respectively 14.22 and 10.79 % higher than those of non-adapted cells. Moreover, acid-adapted cells could tolerate lower pH of 2.5, at which the growth of non-adapted cells was totally inhibited. All the results indicated that acid adaptation was an effective approach for the acid resistance enhancement of microalgae.; When using flue gas as carbon source for microalgae cultivation, the resulting acidic environment caused by SO (X) and NO (X) can inhibit microalgal growth. In this study, Scenedesmus dimorphus acquired increased acid resistance by prior exposure to sublethal acid stress; a process defined as acid adaptation. Among the five algal species tested, S. dimorphus showed the highest level of acid tolerance to extreme acid challenge (exposure to pH 3.0). Non-adapted and acid-adapted exponential algal cells were used as inocula for tubular photobioreactors aerated with 2 % CO2. Previously adapted at pH 4.0 for 1 h, S. dimorphus developed highest growth rate under extreme acidic condition, and the maximum biomass concentration and specific growth rate at pH 3.0 (3.638 +/- 0.074 g L-1 and 1.037 +/- 0.008 d(-1), respectively) were respectively 14.22 and 10.79 % higher than those of non-adapted cells. Moreover, acid-adapted cells could tolerate lower pH of 2.5, at which the growth of non-adapted cells was totally inhibited. All the results indicated that acid adaptation was an effective approach for the acid resistance enhancement of microalgae.
文章类型Article
关键词Acid Adaptation Acid Resistance Flue Gas Ph Scenedesmus Dimorphus
学科领域能源藻类资源
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1007/s10811-012-9827-z
关键词[WOS]TOLERANCE RESPONSE ; CARBON UPTAKE ; PH ; GROWTH ; MICROALGAE ; CO2 ; KR-1 ; SO2 ; NO
收录类别SCI
语种英语
WOS研究方向Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS类目Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS记录号WOS:000310232900031
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/1147
专题微藻生物技术研究组
作者单位Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Shandong Key Lab Energy Genet, Qingdao 266101, Peoples R China
推荐引用方式
GB/T 7714
Jiang, Yinli,Peng, Xiaowei,Zhang, Wei,et al. Enhancement of acid resistance of Scenedesmus dimorphus by acid adaptation[J]. JOURNAL OF APPLIED PHYCOLOGY,2012,24(6):1637-1641.
APA Jiang, Yinli,Peng, Xiaowei,Zhang, Wei,&Liu, Tianzhong.(2012).Enhancement of acid resistance of Scenedesmus dimorphus by acid adaptation.JOURNAL OF APPLIED PHYCOLOGY,24(6),1637-1641.
MLA Jiang, Yinli,et al."Enhancement of acid resistance of Scenedesmus dimorphus by acid adaptation".JOURNAL OF APPLIED PHYCOLOGY 24.6(2012):1637-1641.
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