| 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
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| 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 |
| DOI | 10.1007/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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