Hwang, Jae-Hoon Kabra, Akhil N. Ji, Min-Kyu Choi, Jaeyoung El-Dalatony, Marwa M. Jeon, Byong-Hun 2024-01-20T04:00:52Z 2024-01-20T04:00:52Z 2021-09-05 2016-07 2211-9264 https://pubs.kist.re.kr/handle/201004/123891 The impact of combined sonication, heat and enzyme (SHE) treatment on continuous bioethanol production from mixed microalgal biomass (cyclotella and filamentous) was evaluated in a fermentor. Different pretreatments resulted in varied degrees of cell lysis for microbial fermentation. Filamentous algae were partially damaged under sonication pretreatment, while SHE treatment leads to complete destruction of both cyclotella and filamentous microalgal cells. SHE treatment significantly increased the dissolved carbohydrate concentration (up to 5.8 folds greater than non-pretreated), which enhanced the ethanol production through microbial fermentation. Higher bioactivity of alcohol fermentation by Dekkera bruxellensis (yeast) resulted in higher ethanol yield compared to mixed bacterial culture. The cumulative ethanol production after SHE treatment was 1.4 fold higher than with combined sonication and enzyme (SE) treatment using D. bruxellensis. These results demonstrate that combined SHE treatment is an effective method for the enhancement of yeast promoted fermentative bioethanol production from mixed microalgal biomass. (C) 2016 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV ETHANOL-PRODUCTION HYDROGEN ALGAE PRETREATMENT Enhancement of continuous fermentative bioethanol production using combined treatment of mixed microalgal biomass Article 10.1016/j.algal.2016.03.029 1 ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS, v.17, pp.14 - 20 ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS 17 14 20 scie scopus 000378863700002 2-s2.0-84964474228 Biotechnology & Applied Microbiology Biotechnology & Applied Microbiology Article ETHANOL-PRODUCTION HYDROGEN ALGAE PRETREATMENT Combined treatment Mixed-microalgal biomass Bioethanol Enzyme hydrolysis Fermentation