城市废水中的微藻培养：拟微绿球藻作为一种新型类胡萝卜素源和潜在的微藻收获工具。
Microalgae cultivation in urban wastewater: Coelastrum cf. pseudomicroporum as a novel carotenoid source and a potential microalgae harvesting tool.
机构信息
Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Avda. República Saharaui s/n, 11510 Puerto Real, Cádiz, Spain.
Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Avda. República Saharaui s/n, 11510 Puerto Real, Cádiz, Spain.
出版信息
Bioresour Technol. 2017 Mar;228:210-217. doi: 10.1016/j.biortech.2016.12.095. Epub 2016 Dec 30.
The aim of this work was to study the optimal growth and high value-added production of the microalgae Coelastrum cf. pseudomicroporum Korshikov cultivated in urban wastewater. It was observed that C. cf. pseudomicroporum grew ideally in this medium, acting as an efficient nutrient starver. Additionally, the obtained biomass increased carotenoid cell content after saltwater stress. The effects of light intensity and salt stress on its growth rate were analysed. The results showed that this alga can grow very fast using wastewater as culture medium, reaching maximum growth rates of 1.61±0.05day, and tolerating strong irradiances. It was also found that under salt-stress this species could accumulate carotenoids (range 1.73-91.2pgcell). Moreover, a good harvesting efficiency (96.84%) was observed using Coelastrum exudates as bioflocculant of Scenedesmus sp., so Coelastrum exudates could act as a potential bioflocculant for other species.
本工作旨在研究微藻 Coelastrum cf. pseudomicroporum Korshikov 在城市废水中的最佳生长和高附加值生产。研究发现，C. cf. pseudomicroporum 在这种培养基中生长理想，可作为有效的营养饥饿剂。此外，在盐胁迫后，所得生物量增加了类胡萝卜素细胞含量。分析了光强和盐胁迫对其生长速率的影响。结果表明，该藻类可以使用废水作为培养基快速生长，达到 1.61±0.05day 的最大生长速率，并耐受强光。还发现，在盐胁迫下，该物种可以积累类胡萝卜素（范围为 1.73-91.2pgcell）。此外，使用 Coelastrum 渗出物作为 Scenedesmus sp. 的生物絮凝剂观察到良好的收获效率（96.84%），因此 Coelastrum 渗出物可以作为其他物种的潜在生物絮凝剂。
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