Pilot-scale xylooligosaccharide production through steam explosion of screw press–dried brewers’ spent grains
| Autor: | Johann F. Görgens, Eugéne van Rensburg, Oscar K. K. Bedzo, Lukas J. Swart |
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| Rok vydání: | 2020 |
| Předmět: |
business.product_category
Materials science Municipal solid waste Moisture Renewable Energy Sustainability and the Environment business.industry 020209 energy 02 engineering and technology 010501 environmental sciences Pulp and paper industry 01 natural sciences Dewatering 0202 electrical engineering electronic engineering information engineering Brewing Screw press Dry matter business Xylooligosaccharide 0105 earth and related environmental sciences Steam explosion |
| Zdroj: | Biomass Conversion and Biorefinery. 12:1295-1309 |
| ISSN: | 2190-6823 2190-6815 |
| DOI: | 10.1007/s13399-020-01099-w |
| Popis: | Brewers’ spent grains (BSGs) represent the largest quantity of solid waste from brewing, while xylooligosaccharides (XOS) produced from BSG show promising applications in food, beverage and health products. Production of XOS from a Weiss and malt BSG was scaled-up in steam explosion hydrothermal treatment using process conditions from bench-scale liquid hot water optimisations in stirred batch reactors. Three levels of moisture (15, 25 and 32% dry matter) achieved by screw press dewatering were evaluated by varying the treatment temperatures and times. Results show the highest XOS yields (> 73.1%) were obtained, for both BSGs, at process condition selected (180 °C, 10 min) with 25% initial dry matter content. These yields were higher than reported bench-scale optimisations (61%), but obtained using 60% less water; hence, initial dry matter content was an important variable affecting XOS yield. The pilot-scale steam explosion results provide a departing point for a cost-effective commercial production of XOS from BSG. |
| Databáze: | OpenAIRE |
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