Chemical composition of native and ammonia fiber expansion pretreated rice straw-unextracted versus extractives-free material

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Abstract

Characterization of chemical composition for lignocellulosic biomasss (LCB) is essential in the conversion process of LCB to bioenergy and biochemicals. Accurate quantification of chemical composition allows for better determination of the LCB conversion and product yield in LCB processing. However, the presence of the extractable material is stated to strongly influence the compositional analysis of the LCB. This study was conducted to analyze and compare the chemical composition of (A) native-whole unextracted rice straw of (1) untreated rice straw (URS) and (2) AFEX pretreated rice straw (AC1RS and AC2RS) as well as (B) the extractives-free rice straw of (1) URS and (2) AFEX pretreated rice straw (AC1RS and AC2RS). The effect of the AFEX pretreatment on the composition of rice straw was determined using the extractives-free material of URS, AC1RS and AC2RS. The actual reported composition of native-whole rice straw of URS and AFEX pretreated rice straw were made based on the corrected values of the extractives-free rice straw of URS and AFEX pretreated rice straw. The rice straw was analyzed for structural constituents such as glucan, xylan, arabinan and Klason lignin as well as non-structural constituents. The results demonstrated that the extractives in native-whole unextracted rice straw significantly interfere with the analysis of Klason lignin. The lignin content of the rice straw was overestimated if the extractives were not removed prior to the compositional analysis. The extractives in rice straw statistically did not affect the carbohydrate analyses. However, some soluble sugars were removed from the rice straw during the extraction process.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalJurnal Teknologi
Volume74
Issue number3
Publication statusPublished - 2015

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Straw
Ammonia
Fibers
Chemical analysis
Lignin
Carbohydrates

Keywords

  • Compositional analysis
  • Extractives
  • Lignocellulosic biomass
  • Rice straw

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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title = "Chemical composition of native and ammonia fiber expansion pretreated rice straw-unextracted versus extractives-free material",
abstract = "Characterization of chemical composition for lignocellulosic biomasss (LCB) is essential in the conversion process of LCB to bioenergy and biochemicals. Accurate quantification of chemical composition allows for better determination of the LCB conversion and product yield in LCB processing. However, the presence of the extractable material is stated to strongly influence the compositional analysis of the LCB. This study was conducted to analyze and compare the chemical composition of (A) native-whole unextracted rice straw of (1) untreated rice straw (URS) and (2) AFEX pretreated rice straw (AC1RS and AC2RS) as well as (B) the extractives-free rice straw of (1) URS and (2) AFEX pretreated rice straw (AC1RS and AC2RS). The effect of the AFEX pretreatment on the composition of rice straw was determined using the extractives-free material of URS, AC1RS and AC2RS. The actual reported composition of native-whole rice straw of URS and AFEX pretreated rice straw were made based on the corrected values of the extractives-free rice straw of URS and AFEX pretreated rice straw. The rice straw was analyzed for structural constituents such as glucan, xylan, arabinan and Klason lignin as well as non-structural constituents. The results demonstrated that the extractives in native-whole unextracted rice straw significantly interfere with the analysis of Klason lignin. The lignin content of the rice straw was overestimated if the extractives were not removed prior to the compositional analysis. The extractives in rice straw statistically did not affect the carbohydrate analyses. However, some soluble sugars were removed from the rice straw during the extraction process.",
keywords = "Compositional analysis, Extractives, Lignocellulosic biomass, Rice straw",
author = "Shuhaida Harun and {Md Jahim}, Jamaliah and Takriff, {Mohd Sobri} and Osman Hassan",
year = "2015",
language = "English",
volume = "74",
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journal = "Jurnal Teknologi",
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T1 - Chemical composition of native and ammonia fiber expansion pretreated rice straw-unextracted versus extractives-free material

AU - Harun, Shuhaida

AU - Md Jahim, Jamaliah

AU - Takriff, Mohd Sobri

AU - Hassan, Osman

PY - 2015

Y1 - 2015

N2 - Characterization of chemical composition for lignocellulosic biomasss (LCB) is essential in the conversion process of LCB to bioenergy and biochemicals. Accurate quantification of chemical composition allows for better determination of the LCB conversion and product yield in LCB processing. However, the presence of the extractable material is stated to strongly influence the compositional analysis of the LCB. This study was conducted to analyze and compare the chemical composition of (A) native-whole unextracted rice straw of (1) untreated rice straw (URS) and (2) AFEX pretreated rice straw (AC1RS and AC2RS) as well as (B) the extractives-free rice straw of (1) URS and (2) AFEX pretreated rice straw (AC1RS and AC2RS). The effect of the AFEX pretreatment on the composition of rice straw was determined using the extractives-free material of URS, AC1RS and AC2RS. The actual reported composition of native-whole rice straw of URS and AFEX pretreated rice straw were made based on the corrected values of the extractives-free rice straw of URS and AFEX pretreated rice straw. The rice straw was analyzed for structural constituents such as glucan, xylan, arabinan and Klason lignin as well as non-structural constituents. The results demonstrated that the extractives in native-whole unextracted rice straw significantly interfere with the analysis of Klason lignin. The lignin content of the rice straw was overestimated if the extractives were not removed prior to the compositional analysis. The extractives in rice straw statistically did not affect the carbohydrate analyses. However, some soluble sugars were removed from the rice straw during the extraction process.

AB - Characterization of chemical composition for lignocellulosic biomasss (LCB) is essential in the conversion process of LCB to bioenergy and biochemicals. Accurate quantification of chemical composition allows for better determination of the LCB conversion and product yield in LCB processing. However, the presence of the extractable material is stated to strongly influence the compositional analysis of the LCB. This study was conducted to analyze and compare the chemical composition of (A) native-whole unextracted rice straw of (1) untreated rice straw (URS) and (2) AFEX pretreated rice straw (AC1RS and AC2RS) as well as (B) the extractives-free rice straw of (1) URS and (2) AFEX pretreated rice straw (AC1RS and AC2RS). The effect of the AFEX pretreatment on the composition of rice straw was determined using the extractives-free material of URS, AC1RS and AC2RS. The actual reported composition of native-whole rice straw of URS and AFEX pretreated rice straw were made based on the corrected values of the extractives-free rice straw of URS and AFEX pretreated rice straw. The rice straw was analyzed for structural constituents such as glucan, xylan, arabinan and Klason lignin as well as non-structural constituents. The results demonstrated that the extractives in native-whole unextracted rice straw significantly interfere with the analysis of Klason lignin. The lignin content of the rice straw was overestimated if the extractives were not removed prior to the compositional analysis. The extractives in rice straw statistically did not affect the carbohydrate analyses. However, some soluble sugars were removed from the rice straw during the extraction process.

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