Advances in the Application of Confocal Raman Spectroscopy in Lignocellulosic Cell Walls Pretreatment

Fu-shan CHEN; Gao-min WANG; Yue WU; Peng LU; Zhe JI

doi:10.3964/j.issn.1000-0593(2022)01-0015-05

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 1 >Page 15 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 1, 15 (2022)

Advances in the Application of Confocal Raman Spectroscopy in Lignocellulosic Cell Walls Pretreatment

Fu-shan CHEN^1、*, Gao-min WANG^1、1;, Yue WU^1、1;, Peng LU^2、2;, and Zhe JI^{1、1; 2; *;}

Author Affiliations

¹1. College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266011, China

²2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China

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DOI: 10.3964/j.issn.1000-0593(2022)01-0015-05 Cite this Article

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 Copy Citation Text

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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. 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)

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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

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

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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

Table 1. Assignment of Raman bands for the main components in cell walls

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