通过冷等离子体处理对基质进行功能化处理,作为在生物膜中培养微藻的替代工艺:应用于植物球菌

IF 4.6 2区 生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2024-10-01 DOI:10.1016/j.algal.2024.103728
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引用次数: 0

摘要

微藻类以生产包括生物燃料在内的多种分子而闻名。然而,旨在生产这些生物分子的生物技术工艺尚未实现经济上的可持续性,原因是与下游加工相关的成本较高,可占总生产成本的 80%。与散装培养系统相比,固定在平面上的微藻具有生产率高、收获容易的特点,因此平面培养可能具有更好的经济可行性。然而,由于丝状或菌落微藻固有的三维发育特性,将其固定在平面上具有挑战性。在这项研究中,我们探索了等离子体改性聚对苯二甲酸乙二醇酯平板表面在提高绿色淡水菌落微藻 Botryococcus protuberans 固定化方面的有效性,这种微藻是一种很有希望用于生物燃料生产的类群。研究发现,等离子处理可改变聚对苯二甲酸乙二醇酯基底的润湿性和表面能。与未经处理的基质相比,经 O2 等离子体改性的基质上的肉孢子菌粘附力明显增强。这种粘附力很强,足以防止菌落在水体中发展,同时还能在一个月内形成生物膜,而对其生理机能的影响微乎其微。
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Substrate functionalization by cold plasma treatments as an alternative process to the cultivation of microalgae in biofilm: Application to Botryococcus
Microalgae are renowned for their diverse production of molecules, including biofuels. However, biotechnological processes aiming at producing these biomolecules have yet to achieve economic sustainability due to the high costs associated with downstream processing, which can make up to 80 % of the total production costs. Since microalgae immobilized on a flat surface are characterized by a higher productivity and an easier harvesting than bulk culture systems, flat cultures may present better economic viability. Nevertheless, immobilizing filamentous or colonial microalgae on a flat surface is challenging due to their inherent 3D development. In this study, we explored the effectiveness of a plasma-modified polyethylene terephthalate flat surface for improving the immobilization of the green freshwater colonial microalga Botryococcus protuberans, a promising taxon for biofuel production. Plasma treatments were found to alter the wettability and surface energy of polyethylene terephthalate substrates. Botryococcus adhesion was enhanced significantly on O2 plasma-modified substrates compared to untreated substrates. The adhesion was strong enough to prevent colony development in the water column while allowing the development of a biofilm over one month, with minimal impact on their physiology.
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来源期刊
Algal Research-Biomass Biofuels and Bioproducts
Algal Research-Biomass Biofuels and Bioproducts BIOTECHNOLOGY & APPLIED MICROBIOLOGY-
CiteScore
9.40
自引率
7.80%
发文量
332
期刊介绍: Algal Research is an international phycology journal covering all areas of emerging technologies in algae biology, biomass production, cultivation, harvesting, extraction, bioproducts, biorefinery, engineering, and econometrics. Algae is defined to include cyanobacteria, microalgae, and protists and symbionts of interest in biotechnology. The journal publishes original research and reviews for the following scope: algal biology, including but not exclusive to: phylogeny, biodiversity, molecular traits, metabolic regulation, and genetic engineering, algal cultivation, e.g. phototrophic systems, heterotrophic systems, and mixotrophic systems, algal harvesting and extraction systems, biotechnology to convert algal biomass and components into biofuels and bioproducts, e.g., nutraceuticals, pharmaceuticals, animal feed, plastics, etc. algal products and their economic assessment
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