The use of natural infochemicals for sustainable and efficient harvesting of the microalgae plus-plus">Scenedesmus spp. for biotechnology: insights from a meta-analysis

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• 作者：Sebastiana Roccuzzo ; Andrew P. Beckerman ; Jagroop Pandhal
• 关键词：Colony formation ; Daphnia infochemicals ; Harvesting biomass ; Microalgae ; Open raceway ponds ; Scenedesmus spp
• 刊名：Biotechnology Letters
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：38
• 期：12
• 页码：1983-1990
• 全文大小：638 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Microbiology
  Biotechnology
  Applied Microbiology
  Biochemistry
  
• 出版者：Springer Netherlands
• ISSN：1573-6776
• 卷排序：38

文摘

Open raceway ponds are regarded as the most economically viable option for large-scale cultivation of microalgae for low to mid-value bio-products, such as biodiesel. However, improvements are required including reducing the costs associated with harvesting biomass. There is now a growing interest in exploiting natural ecological processes within biotechnology. We review how chemical cues produced by algal grazers induce colony formation in algal cells, which subsequently leads to their sedimentation. A statistical meta-analysis of more than 80 studies reveals that Daphnia grazers can induce high levels of colony formation and sedimentation in Scenedesmus obliquus and that these natural, infochemical induced sedimentation rates are comparable to using commercial chemical equivalents. These data suggest that natural ecological interactions can be co-opted in biotechnology as part of a promising, low energy and clean harvesting method for use in large raceway systems.