Sugar yields from sunflower stalks treated by hydrothermolysis and subsequent enzymatic hydrolysis
| Autor: | Hong Kyung-Sik, Chan-Duck Jung, Ju-Hyun Yu, Eom In-Yong |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Environmental Engineering
Carbohydrates Bioengineering Furfural chemistry.chemical_compound Bioreactors Cellulase Enzymatic hydrolysis Biomass Food science Fermentable sugar Sugar Waste Management and Disposal Waste Products Liquid fraction Renewable Energy Sustainability and the Environment Hydrolysis Temperature Water General Medicine Sunflower chemistry Biochemistry Slurry Helianthus Sugar yield Biotechnology |
| Zdroj: | Bioresource Technology. 138:1-7 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2013.03.033 |
| Popis: | To produce fermentable sugar with fewer microbial inhibitors via few processes, batch-type hydrothermal treatments of sunflower stalks were performed, followed by enzymatic hydrolysis of pretreatment slurries with Cellic CTec2 and Cellic HTec2 (9:1, v/v, 0.1 ml/g dry biomass, 8.1 FPU). The yields of hemicellulosic sugars were maximized at the pretreatment condition of 180 °C for 30 min, while the furfural and 5-hydroxymethyl-2-furaldehyde (HMF) concentrations remained low. The glucose yield, however, was only 67.0% of the theoretical glucose yield (TGY). Either the treatment of raw biomass prior to pretreatment or the post-treatment of pretreated residue prior to enzymatic hydrolysis increased the glucose yield as follows: washing the pretreated solid with solvents (90% TGY) > partial removal of liquid fraction from the pretreatment slurry (PS, 83%) > removal of hot-water extractives from the biomass prior to pretreatment (77%) > prewetting of the biomass (70%). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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