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- Title
Microwave-Assisted Oxalic Acid Pretreatment for the Enhancing of Enzyme Hydrolysis in the Production of Xylose and Arabinose from Bagasse.
- Authors
Yan, Yuhuan; Zhang, Chunhui; Lin, Qixuan; Wang, Xiaohui; Cheng, Banggui; Li, Huiling; Ren, Junli
- Abstract
In this study, highly-efficient hydrolysis of bagasse into xylose and arabinose sugars (C5 sugars) was developed by microwave-assisted oxalic acid pretreatment under mild reaction conditions. The effects of acid and hydrolysis conditions on the C5 sugar yields were discussed. The results showed that oxalic acid performed better than hydrochloric acid and maleic acid, and was a promising alternative to sulfuric acid for xylose production at the same acid concentration. The maximum yields of xylose (95.7%) and arabinose (91.5%) were achieved via the microwave-assisted oxalic acid pretreatment (120 °C, 10 min, 0.4 mol/L, solid–liquid ratio of 1:50 g/mL), indicating that almost all xylan-type hemicelluloses were released from the cell wall and hydrolyzed into C5 sugars. After pretreatment, more than 90% of the cellulose in the residual bagasse was converted to glucose (92.2%) by enzymatic hydrolysis. This approach could realize the highly-efficient hydrolysis of xylan from bagasse into C5 sugars, which would enhance the enzyme hydrolysis of treated bagasse into glucose.
- Subjects
BAGASSE; HYDROLYSIS; XYLOSE; ARABINOSE; OXALIC acid; HEMICELLULOSE
- Publication
Molecules, 2018, Vol 23, Issue 4, p862
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules23040862