Impact of pretreatments on morphology and enzymatic saccharification of shedding bark of Melaleuca leucadendron

Ahmed, Ibrahim Nasser, Santoso, Shella Permatasari, Tran-Nguyen, Phuong Lan, Huynh, Lien Huong, Ismadji, Suryadi and Ju, Yi-Hsu (2013) Impact of pretreatments on morphology and enzymatic saccharification of shedding bark of Melaleuca leucadendron. Bioresource Technology, 139. pp. 410-414. ISSN 0960-8524

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Abstract

The effects of subcritical water (SCW) and dilute acid pretreatments on the shedding bark of Melaleuca leucadendron (paper bark tree, PBT) biomass morphology, crystallinity index (CrI) and enzymatic saccharification were studied. The morphology of PBT bark was characterized by X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy. SCW pretreatment mainly extracted amorphous parts of the biomass hence its CrI increased, partial decrystallization of cellulose and xposing of intact nanofibers of cellulose were observed for SCW pretreatment at 180°C. On the other hand, dilute acid pretreatment at 160°C exhibited a large decrease in CrI, an increase in surface area, a decrease in lignin content and decrystallization of cellulose as well as the peel-off and degradation of some nanofiber bundles. Dilute acid and SCW pretreatments of PBT biomass resulted in about 4.5 fold enhancement in glucose release relative to the untreated one.

Item Type: Article
Uncontrolled Keywords: Paper bark tree Subcritical water pretreatment Dilute acid pretreatment Crystallinity index XRD
Subjects: Engineering > Chemical Engineering
Divisions: Journal Publication
Depositing User: Suryadi. Ismadji
Date Deposited: 05 Jun 2017 05:03
Last Modified: 10 Oct 2018 07:17
URI: http://repository.ukwms.ac.id/id/eprint/10742

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