不同微藻菌株的可溶性藻产品的生物利用度及其对未灭菌家庭二级出水中小藻生长的影响。
The bioavailability of the soluble algal products of different microalgal strains and its influence on microalgal growth in unsterilized domestic secondary effluent.
机构信息
State Key Laboratory of Environmental Criteria and Risk Assessment, Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
Environmental Simulation and Pollution Control State Key Joint Laboratory and State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China.
出版信息
Bioresour Technol. 2015 Mar;180:352-5. doi: 10.1016/j.biortech.2014.12.065. Epub 2014 Dec 27.
Soluble algal products (SAPs) accumulated in microalgal culture could be used as carbon source by bacteria, and thus induce serious bacteria contamination. In this study, three freshwater microalgal strains, Scenedesmus sp. LX1 (S. LX1), Chlorella ellipsoidea YJ1 (C. YJ1) and Haematococcus pluvialis (H. pluvialis), were used to investigate the bioavailability of SAPs and its influence on microalgal growth in unsterilized domestic secondary effluent. S. LX1 and H. pluvialis could grow well whether secondary effluent was sterilized or not, while C. YJ1 showed poor growth without sterilization. The assimilable organic carbon (AOC) concentration and AOC content in the SAPs of C. YJ1 was as high as 180μg-CL(-1) and 3.2%, respectively, which induced more serious bacteria contamination and thus inhibited the growth of C. YJ1. Based on the results, in microalgal strain selection for massive cultivation, AOC assays of SAPs could be applied to examine microalgal susceptibility to bacteria contamination.
可溶藻产物 (SAPs) 在微藻培养中积累，可被细菌用作碳源，从而导致严重的细菌污染。在这项研究中，使用了三种淡水微藻菌株，即 Scenedesmus sp. LX1（S. LX1）、Chlorella ellipsoidea YJ1（C. YJ1）和 Haematococcus pluvialis（H. pluvialis），来研究 SAPs 的生物可利用性及其对未灭菌的城市二级出水在微藻生长中的影响。S. LX1 和 H. pluvialis 无论二级出水是否经过灭菌都能很好地生长，而 C. YJ1 则表现出未经灭菌时生长不良。C. YJ1 的 SAPs 中的可同化有机碳（AOC）浓度和 AOC 含量分别高达 180μg-CL(-1)和 3.2%，这导致了更严重的细菌污染，从而抑制了 C. YJ1 的生长。基于这些结果，在大规模培养的微藻菌株选择中，可以应用 SAPs 的 AOC 测定来检查微藻对细菌污染的敏感性。
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