University of Phayao; University of Phayao; King Mongkuts University of Technology Thonburi; National Science & Technology Development Agency - Thailand; National Center Genetic Engineering & Biotechnology (BIOTEC); National Science & Technology Development Agency - Thailand; National Center Genetic Engineering & Biotechnology (BIOTEC)
Type
Article
Source Title
EMIRATES JOURNAL OF FOOD AND AGRICULTURE
ISSN
2079-052X
Year
2020
Volume
32
Issue
12
Page
917-924
Open Access
gold
Publisher
UNITED ARAB EMIRATES UNIV
DOI
10.9755/ejfa.2020.v32.i12.2226
Format
PDF
Abstract
A single step sulfuric acid catalyzed (H2SO4) under the organosolv process was studied for fractionation of empty palm fruit branches. The use of H2SO4 as an acid catalyst showed higher efficiency of the removal of hemicellulose with an increase in lignin removal from native EPFB into organic phase and leave glucan in solid fraction. The optimal condition showed the maximum glucan yields of 2.45 g and the highest lignin yields of 1.86 g was at 180 degrees C, with 15 min residence time. The addition of H2SO4 catalyzed enhanced hemicellulose and lignin removal. 0.05% H2SO4 led to improve glucan yields of 3.17 g with the lower degradation of glucan and pentose in the aqueous phase. Under this condition, a 1.28 g recovery of lignin was obtained from the organic phase. Physicochemical analysis revealed intact cellulose fibers with the decrease in crystallinity, while the hemicellulose was partially recovered as mono- and oligomeric sugar. High-purity organosolv lignin with < 2% sugar cross-contamination was obtained with no major structural modification according to Fourier-transform infrared spectroscopy. This work represents an alternative process for efficient fractionation of lignocellulosic biomass in biorefineries.
