Användning av svenska makroalger som substrat för bioetanolproduktion

Examensarbete på grundnivå

Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12380/221787
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Type: Examensarbete på grundnivå
Title: Användning av svenska makroalger som substrat för bioetanolproduktion
Authors: Davidsson, Christoffer
Abstract: This project investigates Saccharina latissima seaweeds, harvested in Sweden, as substrate for bioethanol fermentation. Saccharina latissima is also called sugar kelp and contains large amounts of the polysaccharide laminarin which was the target of interest in this project. The seaweed was milled before mixed with strong base followed by acid to extract the laminarin into a solution. After extraction, three methods for hydrolysing the laminarin into glucose were evaluated: sulphuric acid and autoclaving, commercial laminarinase enzyme, and enzymes from the naturally occuring bacterium Pseudoalteromonas sp. After hydrolysis fermentation was performed in small batches with a commercial strain of brewers' yeast. The results show that both sulphuric acid and enzymes from Pseudoalteromonas sp. did release glucose, which was successfully fermented into ethanol.
Keywords: Energi;Livsvetenskaper;Kemiteknik;Industriell bioteknik;Bioprocessteknik;Biokemikalier;Energy;Life Science;Chemical Engineering;Industrial Biotechnology;Bioprocess Technology;Biochemicals
Issue Date: 2015
Publisher: Chalmers tekniska högskola / Institutionen för biologi och bioteknik
Chalmers University of Technology / Department of Biology and Biological Engineering
URI: https://hdl.handle.net/20.500.12380/221787
Collection:Examensarbeten på grundnivå // Basic Level Theses



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