Sequential acid-/alkali-pretreatment of empty palm fruit bunch fiber = 팜 열매 껍질의 순차적 산/알칼리 처리

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Title
Sequential acid-/alkali-pretreatment of empty palm fruit bunch fiber = 팜 열매 껍질의 순차적 산/알칼리 처리
Author(s)
Seonghun Kim; Jang Min Park; Jeong-Woo SeoChul Ho Kim
Bibliographic Citation
Bioresource Technology, vol. 109, pp. 229-233
Publication Year
2012
Abstract
Pretreatment processes are key technologies for generating fermentable sugars based on lignocellulosic biomass. In this study, we developed a novel method for empty palm fruit bunch fiber (EPFBF) using sequential pretreatment with dilute acid and then alkali. Dilute sulfuric acid was used in the first step, which removed 90% of the hemicellulose and 32% of the lignin, but left most of the cellulose under the optimum pretreatment condition. Sodium hydroxide was then applied in the second step, which extracted lignin effectively with a 70% delignification yield, partially disrupting the ordered fibrils of the EPFBF and thus enhancing the enzyme digestibility of the cellulose. The sequentially pretreated biomass consisted of 82% cellulose, less than 1% hemicellulose, and 30% lignin content afterward. The pretreated biomasses morphologically revealed rough, porous, and irregularly ordered surfaces for enhancing enzyme digestibility. These results indicate that the sequentially acid/alkali-pretreated EPFBF could be broadly useful as a novel biomass.
Keyword
DelignificationDiluted acid/alkaline pretreatmentEmpty palm fruit bunch fiberEnzyme hydrolysisSequential pretreatment
ISSN
0960-8524
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.biortech.2012.01.036
Type
Article
Appears in Collections:
Jeonbuk Branch Institute > Microbial Biotechnology Research Center > 1. Journal Articles
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