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Enhancement of the enzymatic digestibility of sugarcane bagasse by alkali–peracetic acid pretreatment

Paper ID Volume ID Publish Year Pages File Format Full-Text
17853 42701 2009 7 PDF Available
Title
Enhancement of the enzymatic digestibility of sugarcane bagasse by alkali–peracetic acid pretreatment
Abstract

The enzymatic digestibility of sugarcane bagasse was greatly increased by alkali (NaOH)–peracetic acid (PAA) pretreatment under mild conditions. The effects of several factors affecting the pretreatment were investigated. It was found that when bagasse was pre-pretreated by 10% (based on initial dry materials) NaOH with 3:1 liquid-to-solid ratio at 90 °C for 1.5 h and further delignified by 10% peracetic acid (based on initial dry materials) at 75 °C for 2.5 h, the yield of reducing sugars reached 92.04% by enzymatic hydrolysis for 120 h with cellulase loading of 15 FPU/g solid. Compared with acid and alkali pretreatment, alkali–PAA pretreatment could be conducted under milder conditions and was more effective for delignification with less carbohydrates being degraded in the pretreatment process. Alkaline stage played an important role for partial delignification, swelling fibers and subsequently reducing PAA loading. No loss of cellulase activity (FPA) was observed in the liquid phase for alkali–PAA pretreated bagasse after enzymatic hydrolysis for 120 h.

Keywords
Sugarcane bagasse; Pretreatment; Alkaline swelling; Peracetic acid; Delignification; Enzymatic digestibility
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Enhancement of the enzymatic digestibility of sugarcane bagasse by alkali–peracetic acid pretreatment
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 44, Issue 1, 6 January 2009, Pages 17–23
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us