title: Bioethanol Production fromHydrodictyon reticulatumby Fed-Batch Fermentation UsingSaccharomyces cerevisiaeKCTC7017.
abstract: The aim of this study was to develop a potential process for bioethanol production fromHydrodictyon reticulatum(HR), a filamentous freshwater alga, usingSaccharomyces cerevisiae(KCTC7017). From the sugar solutions prepared by the four different hydrolysis methods, bioethanol production ranged from 11.0 g/100 g dried material (acid hydrolysis) to 22.3 g/ 100 g dried material (enzymatic hydrolysis, EH). Bioethanol was fermented from a highly concentrated sugar solution obtained by a decompression-mediated (vacuum) enrichment method (VE). As the results, ethanol was more efficiently produced from HR when sugar solutions were concentrated by VE following EH (EH/VE). Using multiple feeding of the sugar solution prepared by EH/VE from HR, ethanol reached up to a concentration of 54.3 g/l, corresponding to 24.9 g/100 g dried material, which attained the economic level of product concentration (approximately 5%). The results indicate that by using HR, it is feasible to establish a bioethanol production process, which is effective for using microalgae as the raw material for ethanol production.
authors.affiliation: Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.
authors.forename: Seul Ki
authors.initials: SK
authors.lastname: Kim
authors.affiliation: Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.|Department of Phytochemistry, Vietnam Institute of Industrial Chemistry, Hoan Kiem, Hanoi 10999, Vietnam.
authors.forename: Cuong Mai
authors.initials: CM
authors.lastname: Nguyen
authors.affiliation: Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.
authors.forename: Eun Hye
authors.initials: EH
authors.lastname: Ko
authors.affiliation: Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.
authors.forename: In-Chul
authors.initials: IC
authors.lastname: Kim
authors.affiliation: Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.
authors.forename: Jin-Seog
authors.initials: JS
authors.lastname: Kim
authors.affiliation: Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.|Division of Applied Bioscience and Biotechnology, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea.
authors.forename: Jin-Cheol
authors.initials: JC
authors.lastname: Kim
mesh_terms: D061249:Batch Cell Culture Techniques / Q000379:methods*; D056804:Biofuels; D018533:Biomass; D019149:Bioreactors; D000460:Chlorophyta / Q000378:metabolism*; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D006868:Hydrolysis; D012441:Saccharomyces cerevisiae / Q000187:drug effects / Q000378:metabolism*; D000073893:Sugars / Q000378:metabolism / Q000494:pharmacology
chemical_list: D056804:Biofuels; D000073893:Sugars; D000431:Ethanol
keywords: Bioethanol; Hydrodictyon reticulatum; fermentation; freshwater algae; hydrolysis