Journal
BIORESOURCE TECHNOLOGY
Volume 151, Issue -, Pages 91-99Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.10.060
Keywords
SPORL pretreatment; Dilute acid pretreatment; Alkali pretreatment; Enzymatic saccharification; Bamboo
Funding
- Fundamental Research Funds for the International Centre for Bamboo and Rattan [1632012001]
- NSF Career Award [CBET-0847049]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0847049] Funding Source: National Science Foundation
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The response and behavior of bamboo green, timber, and yellow of moso bamboo (Phyllostachys heterocycla) to three pretreatments, sulfite (SPORL), dilute acid (DA), and alkali (NaOH), were investigated and compared with varied chemical loadings at 180 degrees C for 30 min with a 6.25:1 (v/w) liquor-to-bamboo ratio. All the pretreatments improved the enzymatic digestibility of bamboo substrates. Under the investigated conditions, the DA pretreatment achieved better enzymatic digestibility, but had lower sugar recovery yield, and formed more fermentation inhibitors. The results suggested that the SPORL pretreatment be able to generate more readily digestible bamboo substrate with higher sugar yield and fewer fermentation inhibitors than the corresponding DA pretreatment if hemicelluloses are sufficiently removed by adding more acid to bring down the pretreatment pH. Bamboo timber had higher sugar content and better enzymatic digestibility and therefore was a better feedstock for bioconversion than bamboo green and yellow. (C) 2013 Elsevier Ltd. All rights reserved.
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