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| Format: | Artículo científico |
| Language: | en |
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Universidade Estadual de Maringá
2017
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| Online Access: | https://www.redalyc.org/articulo.oa?id=187153564003 |
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Table of Contents:
- Optimized acid hydrolysis of the polysaccharides from the seaweed Solieria filiformis (Kützing) P.W. Gabrielson for bioethanol production George Meredite Cunha de Castro Norma Maria Barros Benevides Maulori Curié Cabral Rafael de Souza Miranda Enéas Gomes Filho Maria Valderez Ponte Rocha Márjory Lima Holanda Araújo Biología Iota cellulose galactose carrageenan fermentation The seaweeds are bio-resource rich in sulfat ed and neutral polysaccharides. The tropical seaweed species used in this study ( Solieria filiformis ), after dried, shows 65.8% (w/w) carbohydrate, 9.6% (w/w) protein, 1.7% (w/w) lipid, 7.0% (w/w) moisture and 15.9% (w/w) ash. The dried seaweed was easily hydrolyzed under mild conditions (0.5 M sulfuric ac id, 20 min.), generating fermentable monosaccharides with a maximum hydrolysis efficiency of 63.21%. Gala ctose and glucose present in the hydrolyzed were simultaneously fermented by Saccharomyces cerevisiae when the yeast was acclimated to galactose and cultivated in broth containing only galactose. The ki netic parameters of the fermentation of the seaweed hydrolyzed were Y (P ⁄ S) = 0.48 ± 0.02 g.g − 1 , P P = 0.27 ± 0.04 g.L − 1 .h − 1 , η = 94.1%, representing a 41% increase in bioethanol produc tivity. Therefore, S. filiformis was a promising renewable resour ce of polysaccharides easily hydrolyzed, generating a broth rich in ferment able monosaccharides for ethanol production. 2017 artículo científico 1679-9283 https://www.redalyc.org/articulo.oa?id=187153564003 en http://www.redalyc.org/revista.oa?id=1871 Acta Scientiarum. Biological Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Biological Sciences (Brasil) Num.4 Vol.39