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Compositional and structural changes in Phoenix canariensis and Opuntia ficus-indica with pretreatment: Effects on enzymatic hydrolysis and second generation ethanol production.
- Source :
-
Bioresource technology [Bioresour Technol] 2017 Jan; Vol. 224, pp. 702-707. Date of Electronic Publication: 2016 Nov 05. - Publication Year :
- 2017
-
Abstract
- Two different plants namely Phoenix canariensis and Opuntia ficus-indica were used as substrate for reducing sugar generation and ethanol production. Dilute acid, alkaline and steam explosion were used as pretreatment methods in order to depolymerize lignin and/or hemicellulose and recover cellulose. By using alkaline pretreatment with 2.5% NaOH 71.08% for P. canariensis and 74.61% for O. ficus-indica lignin removal and 81.84% for P. canariensis and 72.66% for O. ficus-indica cellulose recovery yields were obtained. Pretreated materials were hydrolyzed by cellulase with high efficiency (87.0% and 84.5% cellulose conversion yields for P. canariensis and O. ficus-indica) and used as substrate for fermentation. Maximum ethanol production of 15.75g/L and 14.71g/L were achieved from P. canariensis and O. ficus-indica respectively. Structural differences were observed by XRD, FTIR and SEM for untreated, pretreated, hydrolyzed and fermented samples and were highly correlated with compositional analysis results.<br /> (Copyright © 2016 Elsevier Ltd. All rights reserved.)
- Subjects :
- Arecaceae metabolism
Cellulase chemistry
Cellulase metabolism
Cellulose metabolism
Ethanol chemistry
Fermentation
Hydrolysis
Lignin chemistry
Microscopy, Electron, Scanning
Opuntia metabolism
Polysaccharides chemistry
Sodium Hydroxide chemistry
Spectroscopy, Fourier Transform Infrared
Steam
X-Ray Diffraction
Arecaceae chemistry
Biotechnology methods
Ethanol metabolism
Opuntia chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 224
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 27847237
- Full Text :
- https://doi.org/10.1016/j.biortech.2016.11.015