{"title":"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","authors":"Gabriel Giannini Beillon , Brigitte Veidl , Justine Marchand , Fabienne Poncin-Epaillard , Benoît Schoefs","doi":"10.1016/j.algal.2024.103728","DOIUrl":null,"url":null,"abstract":"<div><div>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 <em>Botryococcus protuberans</em>, a promising taxon for biofuel production. Plasma treatments were found to alter the wettability and surface energy of polyethylene terephthalate substrates. <em>Botryococcus</em> adhesion was enhanced significantly on O<sub>2</sub> 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.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"83 ","pages":"Article 103728"},"PeriodicalIF":4.6000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Substrate functionalization by cold plasma treatments as an alternative process to the cultivation of microalgae in biofilm: Application to Botryococcus\",\"authors\":\"Gabriel Giannini Beillon , Brigitte Veidl , Justine Marchand , Fabienne Poncin-Epaillard , Benoît Schoefs\",\"doi\":\"10.1016/j.algal.2024.103728\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>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 <em>Botryococcus protuberans</em>, a promising taxon for biofuel production. Plasma treatments were found to alter the wettability and surface energy of polyethylene terephthalate substrates. <em>Botryococcus</em> adhesion was enhanced significantly on O<sub>2</sub> 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.</div></div>\",\"PeriodicalId\":7855,\"journal\":{\"name\":\"Algal Research-Biomass Biofuels and Bioproducts\",\"volume\":\"83 \",\"pages\":\"Article 103728\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2024-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Algal Research-Biomass Biofuels and Bioproducts\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2211926424003400\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BIOTECHNOLOGY & APPLIED MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Algal Research-Biomass Biofuels and Bioproducts","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2211926424003400","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
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.
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