Bioresource Technology ( IF 9.7 ) Pub Date : 2017-09-23 , DOI: 10.1016/j.biortech.2017.09.157
Won Noh , Jungmin Kim , Sang-jun Lee , Byung-Gon Ryu , Chang-min Kang
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Microalgae have been extensively studied for the production of various products. However, to date, microalgal biomass has not become economically feasible, mainly due to different issues such as contamination from various sources that occurs during downstream processes, and which leads to low quality biomass with limited application. In this study, to overcome contamination by flocculants and other microorganisms, the cationic biopolymer α-Poly-l-lysine (α-PLL) was applied. The cationic amine moiety and polymeric chain of α-PLL rendered microalgal harvesting efficient. With increasing α-PLL chain length, efficient dose- and time-dependent harvesting was achieved. In addition to efficient flocculation performance, biomass harvested using α-PLL showed suppressed biological contamination through the inherent antimicrobial activity of α-PLL. Thus, it is possible to upgrade the quality and storability of produced microalgal biomass using α-PLL-induced flocculation.
中文翻译:
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使用生物聚合絮凝剂α-聚-1-赖氨酸对微藻类小球藻的收获和污染控制
微藻已被广泛研究用于生产各种产品。然而,迄今为止,微藻生物质在经济上还不可行,这主要是由于不同的问题,例如在下游加工过程中发生的各种来源的污染,这导致了应用受限的劣质生物质。在这项研究中,为了克服絮凝剂和其他微生物的污染,阳离子生物聚合物α-Poly- 1使用了赖氨酸(α-PLL)。阳离子胺部分和α-PLL的聚合物链使微藻收获效率更高。随着α-PLL链长度的增加,获得了有效的剂量和时间依赖性收获。除了有效的絮凝性能外,使用α-PLL收集的生物质还通过α-PLL固有的抗微生物活性抑制了生物污染。因此,可以使用α-PLL诱导的絮凝来提高生产的微藻生物质的质量和可存储性。