Hydrothermal fractional pretreatment of sea algae and its enhanced enzymatic hydrolysis
| Autor: | Kazumichi Yanagisawa, Kazuyuki Oka, Masanori Hiraoka, Ayumu Onda, Koji Kajiyoshi, Kazuhide Okuda |
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| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
biology Renewable Energy Sustainability and the Environment General Chemical Engineering Organic Chemistry macromolecular substances biology.organism_classification Pollution Hydrothermal circulation Inorganic Chemistry Cell wall Hydrolysis chemistry.chemical_compound Fuel Technology chemistry Algae Enzymatic hydrolysis Aquatic plant Botany Monosaccharide Cellulose Waste Management and Disposal Biotechnology Nuclear chemistry |
| Zdroj: | Journal of Chemical Technology & Biotechnology. 83:836-841 |
| ISSN: | 1097-4660 0268-2575 |
| DOI: | 10.1002/jctb.1877 |
| Popis: | BACKGROUND: Sea algae cellulose has been little utilized because the cellulose content in sea algae is low. For the effective utilization of sea algae cellulose, cellulose must be converted without drying into valuable material with a high rate and yield. From this viewpoint, effects of hydrothermal pretreatments of sea algae to enhance the glucose production by enzymatic hydrolysis of sea algae cellulose were investigated. RESULTS: Using hydrothermal pretreatment performed at 423 K for Monostroma nitidum Wittrock (green alga) and at 473 K for Solieria pacifica (red alga) for 30 min, yields of extracted water-soluble components containing monosaccharides were 0.51 g g−1 for the green alga and 0.62 g g−1 for the red alga. The apparent rate of glucose production from hydrothermally pretreated green alga by enzymatic hydrolysis was > 10 times faster than that of the non-pretreated sample. Yields of glucose from cellulose by enzymatic hydrolysis were 79.9% for the green alga and 87.8% for the red alga. CONCLUSION: Cellulose of sea algae was successfully fractionated by hydrothermal pretreatments, which resulted in high susceptibility of sea algae cellulose to enzyme attack. This process leads to the effective utilization of sea algae cellulose. Copyright © 2008 Society of Chemical Industry |
| Databáze: | OpenAIRE |
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