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- W4243887356 abstract "Abstract Background: Hydrogen peroxide-acetic acid (HPAA) is widely used in pretreatment of lignocellulose because it has a good capability in selective delignification. However, high concentration (more than 60%) of HPAA increases the cost of pretreatment and the risk of explosion. In this work, alkaline post-incubation was employed to decrease the HPAA loading and improve the saccharification of poplar. Results: Pretreatment with 100% HPAA removed 91.0% lignin and retained 89.9% glucan in poplar. After poplar was pretreated by 100% HPAA at 60 °C for 2 h, the glucan conversion in enzymatic hydrolysis by cellulase increased to 90.1%. The total lignin, surface lignin, and acetyl group of HPAA-pretreated poplar were removed by alkaline incubation. More than 92% acetyl groups of HPAA-pretreated poplar were removed by 1.0% NaOH. After incubation of 60% HPAA-pretreated poplar with 1.0% NaOH, the glucan conversion enhanced to 95.0%. About 40% HPAA loading in pretreatment was reduced by alkaline incubation without the decrease of glucose yield. Conclusions: Alkaline post-incubation has strong ability on the deacetylation and delignification of HPAA-pretreated poplar, exhibiting a strong promotion on the enzymatic hydrolysis yield. This report represented alkaline incubation reduced the HPAA loading, improved pretreatment safety, exhibiting excellent potential application in saccharification of poplar." @default.
- W4243887356 created "2022-05-12" @default.
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- W4243887356 date "2021-05-05" @default.
- W4243887356 modified "2023-09-24" @default.
- W4243887356 title "Alkaline Post-Incubation Improves the Saccharification of Poplar after Hydrogen Peroxide-Acetic Acid Pretreatment" @default.
- W4243887356 doi "https://doi.org/10.21203/rs.3.rs-474746/v1" @default.
- W4243887356 hasPublicationYear "2021" @default.
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