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首页> 外文期刊>Journal of Applied Phycology >Drag-reducing polysaccharides from marine microalgae: species productivity and drag reduction effectiveness
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Drag-reducing polysaccharides from marine microalgae: species productivity and drag reduction effectiveness

机译：海洋微藻的减阻多糖：物种生产力和减阻效力

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摘要

We have conducted a study of the potential use of drag-reducing biopolymers produced by marine microalgae for engineering applications. Several marine microalgae species were tested for their production of drag-reducing polysaccharides in large custom-designed plate bioreactors. Promising species (such as Porphyridium cruentum, Rhodella maculata, Schizochlamydella capsulata and Chlorella stigmatophora) were cultured for periods of time ranging from a few weeks to over 6 months. The basic drag-reducing ability of the polysaccharides was established by comparing their drag reduction effectiveness at various concentrations in water. The algal polysaccharide mass productivity was also measured per unit area of bioreactor's illuminated surface. Finally, an all-inclusive criterion, the volumetric production of drag-reducing water giving a set level of drag reduction was quantified, and led us to a ranking of the tested species in order of productivity relevant to implementation. Some aspects of polysaccharide production by aged cultures were investigated as well. We also quantified the drag-reducing effectiveness of intracellular polysaccharides, and visualized the presence of exopolymer particles in the medium.
机译：我们已经对海洋微藻生产的减阻生物聚合物在工程应用中的潜在用途进行了研究。测试了几种海洋微藻物种在大型定制设计的平板生物反应器中产生减阻多糖的能力。有前途的物种（例如，卟啉卟啉菌，斑纹红球菌，荚膜裂殖酵母和小球藻）的培养时间为数周到6个月以上。多糖的基本减阻能力是通过比较其在水中各种浓度下的减阻效果而建立的。还测量了每单位面积生物反应器照射表面的藻多糖质量生产率。最终，一个全方位的标准，即给定减阻水平的减阻水的体积产量被量化，并导致我们按照与实施相关的生产率的顺序对被测物种进行了排名。还研究了老化培养物生产多糖的一些方面。我们还量化了细胞内多糖的减阻效力，并可视化了培养基中外聚合物颗粒的存在。

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