Open AccessEffect of different pretreatment methods on structural carbohydrates of kenaf fiber
Author(s) -
Nurul Aishah Mazlan,
Kamaliah Abdul Samad,
Siti Nur Nadhirah Zulkifli,
Hafizuddin Wan Yussof,
Syed M. Saufi,
Jamaliah Md Jahim
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/736/5/052007
Subject(s) - kenaf , lignin , chemistry , sodium hydroxide , biomass (ecology) , bioconversion , lignocellulosic biomass , yield (engineering) , fiber , nitric acid , pulp and paper industry , fourier transform infrared spectroscopy , food science , materials science , chemical engineering , organic chemistry , agronomy , fermentation , biology , composite material , engineering
The application of pretreatment on lignocellulosic biomass is considered as a critical step to alter the recalcitrant structure of biomass especially in bioconversion process. Different pretreatment may result in different modification effects which is important to be rationally evaluated before adoption in order to achieve high yield of end products. Therefore, this study was done to evaluate the effect of different pretreatment methods on kenaf in terms of their chemical and physical properties. Kenaf was subjected to alkaline pretreatment using 4.42% sodium hydroxide operated at 100 °C for 1 hour and acid pretreatment using 0.1% nitric acid which was run at 60 °C for 12 hours. Through characterization study, higher structural carbohydrates were found in alkaline pretreated kenaf compared to acid pretreated kenaf with 73.4% and 70.3% respectively. The SEM, XRD and FTIR analysis showed the significant different of biomass structure before and after pretreatment. From this study, pretreatment process has been verified can improve the biomass compositions to be utilized for chemicals production by disrupt the structure and remove lignin which can be proven by the increasing in structural carbohydrates and decreasing in lignin yield from this characterization study.