Spectroscopy and Spectral Analysis, Volume. 42, Issue 1, 15(2022)
Advances in the Application of Confocal Raman Spectroscopy in Lignocellulosic Cell Walls Pretreatment
Figures & Tables(3)
Fig. 1. PCA scores plot of Raman spectra of Pinus cell wall untreated and pretreated by dilute acid (a, d); The cluster results (b, e); Average Raman spectra of each layers before preprocessing(c, f)
Fig. 2. Raman images of spruce wood cross sections (38 μm×38 μm) based on VCA analysis with four endmembers using the wavenumber region from 1 800 to 300 cm-1
Table 1. Assignment of Raman bands for the main components in cell walls
View tableView in ArticleTable 1. Assignment of Raman bands for the main components in cell walls
组分 拉曼位移
/cm-1归属 纤维素 380 吡喃环CCC对称弯曲振动 437~459 环(CCO)伸缩振动 520 糖苷键COC伸缩振动 902 重原子CC和CO伸缩振动 913 C6上HCC和HCO弯曲振动 968~997 CH2面内摇摆振动 1 098* 糖苷键COC不对称伸缩振动 1 122 糖苷键COC对称伸缩振动 1 149 重原子CC和CO伸缩振动加HCC
和HCO弯曲振动1 292 重原子伸缩振动加HCC和HCO弯曲振动 1 337 HCC和HCO弯曲振动 1 406 HCC, HCO和HOC弯曲振动 1 455 HCH和HOC弯曲振动 2 848 CH和CH2伸缩振动 2 889~2 965* CH和CH2伸缩振动 3 291~3 395 OH伸缩振动 半纤维素 503~553 CCO伸缩振动 870~940* COC面内对称伸缩振动 1 000~1 026 COH, CC伸缩振动 1 125 COC, CC伸缩振动 1312 CH, COH弯曲振动 1 365~1 376 CH, OH面内弯曲振动 2 917 CH伸缩振动 2 933 OH伸缩振动 木质素 704~792 芳香环骨架对称伸缩振动 1 155~1 158 酚羟基O—H弯曲振动 1 185~1 187 1 214~1 217 甲氧基O—CH3伸缩振动 1 285~1 289 芳香环醚键伸缩振动 1 330~1 333 酚羟基O—H弯曲振动 1 506~1 514 芳香环骨架不对称伸缩振动 1 600* 芳香环骨架弯曲振动 1 660* 与苯环共轭的酮羰基伸缩振动
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Fu-shan CHEN, Gao-min WANG, Yue WU, Peng LU, Zhe JI. Advances in the Application of Confocal Raman Spectroscopy in Lignocellulosic Cell Walls Pretreatment[J]. Spectroscopy and Spectral Analysis, 2022, 42(1): 15
Paper Information
Category: Research Articles
Received: Nov. 15, 2020
Accepted: --
Published Online: Mar. 31, 2022
The Author Email: Fu-shan CHEN (chenfushan@qust.edu.cn)
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