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| Effect of P Factor on Dissolution of Poplar Hemicellulose during the Hydrothermal Pretreatment Process |
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| DOI：10.11980/j.issn.0254-508X.2018.08.001 |
| Key Words:poplar prehydrolysis P factor xylo-oligosaccharides |
| Fund Project:国家重点研发计划项目（2017YFB0307900）；国家自然科学基金（31470602，31500490，31670595，31770628）；泰山学者工程。 |
| Author Name | Affiliation | | XU Feng | State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology(Shandong Academy of Sciences）, Ji’nan, Shangdong Province, 250353 | | YANG Gui-hua* | State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology(Shandong Academy of Sciences）, Ji’nan, Shangdong Province, 250353 | | JI Xing-xiang | State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology(Shandong Academy of Sciences）, Ji’nan, Shangdong Province, 250353 | | WANG Qiang | State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology(Shandong Academy of Sciences）, Ji’nan, Shangdong Province, 250353 | | DONG Ji-ran | State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology(Shandong Academy of Sciences）, Ji’nan, Shangdong Province, 250353 | | CHEN Jia-chuan* | State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology(Shandong Academy of Sciences）, Ji’nan, Shangdong Province, 250353 |
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| Abstract:Hydrothermal pretreatment of biomass before pulping can effectively extract hemicelluloses， and this is of great significance for high value utilization of biomass. In this work， in the process of hydrothermal pretreatment of poplar under different conditions， the dissolution of hemicelluloses， acid-soluble lignin， acetic acid and aldehydes change with the P factor were studied.The results indicated that the optimum range of P factor was from 685 to 1225， in this range， the hemicellulose in poplar could easily dissolve， and the total xylose dissolution rate was 51.8%. The contents of xylose， acid soluble lignin， acetic acid， furfural etc. in the hydrolysate were proportional to the increase of P factor， while the content of xylo-oligosaccharides was inversely proportional to the increase of P factor.When the P factor was 717， the content of xylo-oligosaccharides in hydrolysate reached a maximum of 10.24 g/L， the total xylose dissolution rate of the raw materials was 44.2%， and the contents of xylose， acetic acid， furfural and other non-carbohydrate substrates were low，this was benefit to the subsequent separation of xylose and xylo-oligosaccharides for producing functional products． |
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