title: [Ethanol production with starch-based Tetraselmis subcordiformis grown with CO2 produced during ethanol fermentation].
abstract: A system coupling ethanol fermentation with microalgae culture was developed, in which CO2 produced during ethanol fermentation was used as carbon source for the growth of Tetraselmis subcordiformis, a microalgae accumulating starch intracellularly. The biomass concentration about 2.0 g DCW/L was achieved within the photobioreactor for the batch culture of 7 days, and intracellular starch accumulation was about 45%. Furthermore, ultrasonic pretreatment and enzymatic hydrolysis were applied to the microalgae biomass, and 71.1% of the intracellular starch was converted into glucose that was fermented sequentially to ethanol by Saccharomyces cerevisiae with an ethanol yield of 87.6% of the theoretical value, indicating that the microalgae biomass could be an alternative feedstock for ethanol production to save grain consumption, and in the meantime mitigate the CO2 emission.
authors: School of Life Science and Biotechnology, Dalian University of Technology, Dalian 116024, China.
authors: Sha
authors: S
authors: Liao
authors: Changhong
authors: C
authors: Yao
authors: Song
authors: S
authors: Xue
authors: Wei
authors: W
authors: Zhang
authors: Fengwu
authors: F
authors: Bai
mesh_terms: D061249:Batch Cell Culture Techniques; D002245:Carbon Dioxide / Q000378:metabolism* / Q000494:pharmacology; D002478:Cells, Cultured; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D058086:Microalgae / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D058433:Photobioreactors; D012441:Saccharomyces cerevisiae / Q000378:metabolism; D013213:Starch / Q000378:metabolism*
chemical_list: D002245:Carbon Dioxide; D000431:Ethanol; D013213:Starch