title: Rapid analysis of barley straw before and after dilute sulfuric acid pretreatment by photoluminescence.
abstract: The fluorescence intensities (FIs) of raw and pretreated barley straws were measured by fluorescence microscopy, and the difference in the fluorescence intensity of barley straw before and after dilute acid pretreatment was analyzed by investigation of the major compounds of barley straw. The difference in fluorescence intensity was due to the difference in xylan content. Barley straw was pretreated using dilute sulfuric acid at various conditions and the correlation between the fluorescence intensity and glucose yield of barley straw was investigated. The coefficient of determination (R(2)) of the correlation was found to be 72.28%. Also the calibration of fluorescence intensity with the xylan content was performed. In addition, the absorption and emission spectra of the raw and the pretreated barley straw were examined to verify the proposed method. The absorption and emission wave lengths were 550 nm and 665 nm, respectively.
authors: Department of Chemical and Biological Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul, Republic of Korea. Electronic address: seanlearns@gmail.com.
authors: Sung Bong
authors: SB
authors: Kim
authors: Department of Chemical and Biological Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul, Republic of Korea. Electronic address: cuichunzhi@korea.ac.kr.
authors: Chunzhi
authors: C
authors: Cui
authors: Department of Chemical and Biological Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul, Republic of Korea. Electronic address: annyong2000@korea.ac.kr.
authors: Ja Hyun
authors: JH
authors: Lee
authors: Department of Chemical and Biological Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul, Republic of Korea. Electronic address: herro@korea.ac.kr.
authors: Sang Jun
authors: SJ
authors: Lee
authors: Department of Chemical and Biological Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul, Republic of Korea. Electronic address: ahn@korea.ac.kr.
authors: Dong June
authors: DJ
authors: Ahn
authors: Department of Chemical Engineering, Kwangwoon University, Wolgye-Dong, Nowon-Gu, Seoul, Republic of Korea. Electronic address: chpark@kw.ac.kr.
authors: Chulhwan
authors: C
authors: Park
authors: Department of Chemical Engineering, Kyonggi University, Iui-Dong, Yeongtong-Gu, Suwon, Republic of Korea. Electronic address: jskim84@kyonggi.ac.kr.
authors: Jun Seok
authors: JS
authors: Kim
authors: Department of Chemical and Biological Engineering, Korea University, Anam-Dong, Sungbuk-Gu, Seoul, Republic of Korea. Electronic address: kimsw@korea.ac.kr.
authors: Seung Wook
authors: SW
authors: Kim
mesh_terms: D000383:Agriculture; D001234:Aspergillus niger / Q000378:metabolism; D001673:Biodegradation, Environmental; D018533:Biomass; D002138:Calibration; D005285:Fermentation; D005947:Glucose / Q000737:chemistry; D001467:Hordeum / Q000378:metabolism*; D008031:Lignin / Q000737:chemistry / Q000378:metabolism; D049449:Luminescence; D010777:Photochemistry / Q000379:methods; D012037:Refuse Disposal; D013050:Spectrometry, Fluorescence; D013464:Sulfuric Acids / Q000737:chemistry*; D014242:Trichoderma / Q000378:metabolism; D014990:Xylans / Q000737:chemistry
chemical_list: D013464:Sulfuric Acids; D014990:Xylans; C036909:lignocellulose; D008031:Lignin; D005947:Glucose; C033158:sulfuric acid
keywords: Biomass analysis; Dilute acid pretreatment; Fluorescence; Photoluminescence; Xylan