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High-pressure technology for Sargassum spp biomass pretreatment and fractionation in the third generation of bioethanol production

Aparicio, E; Rodríguez-Jasso, RM; Pinales-Márquez, CD; Loredo-Treviño, A; Robledo-Olivo, A; Aguilar, CN; Kostas, ET; (2021) High-pressure technology for Sargassum spp biomass pretreatment and fractionation in the third generation of bioethanol production. Bioresource Technology , 329 , Article 124935. 10.1016/j.biortech.2021.124935. Green open access

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Abstract

Sargassum spp is an invasive macroalgae and an alternative feedstock for bioethanol production. Sargassum spp biomass was subjected to high-pressure technology for biomass fractionation under different operating conditions of temperature and residence time to obtain glucan enriched pretreated solids (32.22 g/100 g of raw material). Enzyme hydrolysis process at high pretreated solid loading (13%, w/v) and enzyme loading of 10 FPU/g of glucan was performed, obtaining 43.01 g/L of glucose corresponding to a conversion yield of 92.12%. Finally, a pre-simultaneous saccharification and fermentation strategy (PSSF) was performed to produce bioethanol. This operational strategy produced 45.66 g/L of glucose in the pre-saccharification stage, and 18.14 g/L of bioethanol was produced with a glucose to bioethanol conversion yield of 76.23%. The development of this process highlights the feasibility of bioethanol production from macroalgal biomass in the biorefinery concept.

Type: Article
Title: High-pressure technology for Sargassum spp biomass pretreatment and fractionation in the third generation of bioethanol production
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.biortech.2021.124935
Publisher version: https://doi.org/10.1016/j.biortech.2021.124935
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Seaweed, Macroalgae, Severity factor, Biofuels, Hydrothermal processing
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Biochemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10128570
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