Combined effects of nitrogen levels and Daphnia culture filtrate on colony size of Scenedesmus obliquus
Combined effects of nitrogen levels and Daphnia culture filtrate on colony size of Scenedesmus obliquus
复制标题
氮水平和水蚤培养滤液对斜生栅藻菌落大小的综合影响
DOI：
10.1016/j.algal.2015.03.002
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发表时间：
2015
影响因子：
5.1
通讯作者：
Yang Zhou
中科院分区：
文献类型：
--
作者：
Zhu Xuexia;Yang Jingwen;Xu Nuo;Chen Ge;Yang Zhou
菌落大小的增加有利于从培养基中收获栅藻细胞；因此，应该确定刺激菌落扩大生产的因素。本研究旨在探讨氮素水平和水蚤培养滤液对斜生栅藻菌落大小的联合影响。结果表明，菌落形成率较高。在低氮水平下，丝虫培养滤液诱导的倾斜现象得到促进。菌落大小增加了约50%-100%，这表明低氮和浮游动物信息物质协同影响了OFS的菌落形成。斜肌。此外，群体规模的增加和高的沉降速度提高了种群对离心和过滤的适宜性，因此，这些种群可能有助于收获。根据试验结果，在培养前3天添加水培滤液。采集到的斜肌可能是有用的。因此，所提出的方法可以应用于场景中生物量的高效收获。
Increased colony size facilitates the harvest of Scenedesmus cells from culture media; as such, factors that stimulate colony enlargement for production should be identified. This study aimed to investigate the combined effects of nitrogen levels and Daphnia culture filtrate on the colony size of Scenedesmus obliquus. Results showed that the colony formation ofS. obliquusinduced byDaphniaculture filtrate was promoted under low nitrogen levels. Colony size increased by approximately 50%–100%, which suggested that low nitrogen and zooplankton infochemicals synergistically affected the colony formation ofS. obliquus. Furthermore, increased colony size and high settling velocities enhanced the suitability of populations for centrifugation and filtration; thus, these populations could be helpful for harvest. According to the results, addition ofDaphniaculture filtrate at 3 days beforeS. obliquuswas harvested could be useful. Therefore, the proposed method could be applied to facilitate efficient harvest ofScenedesmusbiomass.