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Subcritical water-carbon dioxide pretreatment of oil palm mesocarp fiber for xylooligosaccharide and glucose production


Citation

Ahmad, Norlailiza and Zakaria @ Mamat, Mohd Rafein and Mohd Yusoff, Mohd Zulkhairi and Fujimoto, Shinji and Inoue, Hiroyuki and Ariffin, Hidayah and Hassan, Mohd Ali and Shirai, Yoshihoto (2018) Subcritical water-carbon dioxide pretreatment of oil palm mesocarp fiber for xylooligosaccharide and glucose production. Molecules, 23 (6). art. no. 1310. pp. 1-14. ISSN 1420-3049

Abstract

The present work aimed to investigate the pretreatment of oil palm mesocarp fiber (OPMF) in subcritical H2O-CO2 at a temperature range from 150–200 °C and 20–180 min with CO2 pressure from 3–5 MPa. The pretreated solids and liquids from this process were separated by filtration and characterized. Xylooligosaccharides (XOs), sugar monomers, acids, furans and phenols in the pretreated liquids were analyzed by using HPLC. XOs with a degree of polymerization X2–X4 comprising xylobiose, xylotriose, xylotetraose were analyzed by using HPAEC-PAD. Enzymatic hydrolysis was performed on cellulose-rich pretreated solids to observe xylose and glucose production. An optimal condition for XOs production was achieved at 180 °C, 60 min, 3 MPa and the highest XOs obtained was 81.60 mg/g which corresponded to 36.59% of XOs yield from total xylan of OPMF. The highest xylose and glucose yields obtained from pretreated solids were 29.96% and 84.65%, respectively at cellulase loading of 10 FPU/g-substrate.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Biotechnology and Biomolecular Sciences
Institute of Tropical Forestry and Forest Products
DOI Number: https://doi.org/10.3390/molecules23061310
Publisher: MDPI
Keywords: Oil palm mesocarp fiber; Subcritical H2O-CO2; Pretreatment; Xylooligosaccharides; Glucose
Depositing User: Nabilah Mustapa
Date Deposited: 15 Apr 2020 16:46
Last Modified: 15 Apr 2020 16:46
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/molecules23061310
URI: http://psasir.upm.edu.my/id/eprint/22550
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