Determination of Eucalyptus spp lignin S/G ratio: a comparison between methods

Bioresource Technology
Cleiton A NunesF O Silvério

Abstract

The syringyl/guaiacyl ratio was determined for six different Eucalyptus spp. wood clones cultivated in four regions in Brazil. The determinants were made by pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) and the results were compared with those obtained by alkaline nitrobenzene oxidation method. The S/G ratios were obtained considering all the identified lignin derivatives in the pyrograms and also using two groups of markers. The first group of markers consisted of guaiacol, 4-methylguaiacol, 4-vinylguaiacol, trans-isoeugenol, syringol, 4-methylsyringol, 4-vinylsyringol and trans-4-propenylsyringol compounds as markers. The second group included guaiacol, 4-methylguaiacol, 4-vinylguaiacol, vanillin, 4-ethylsyringol, 4-vinylsyringol, syringaldehyde, syringylacetone and trans-4-propenylsyringol. It was observed from the statistical analysis that the values of S/G obtained by Py-GC-MS using the two groups of markers did not differ significantly from those obtained by nitrobenzene oxidation method.

References

Jul 21, 2000·Solid State Nuclear Magnetic Resonance·A T MartínezR Fründ
Nov 9, 2007·Bioresource Technology·Flaviano O SilvérioAugusto F Milanez

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Citations

Oct 31, 2013·International Journal of Molecular Sciences·Yuan-Yuan BaiRun-Cang Sun
Apr 18, 2014·SpringerPlus·Thiago de Paula ProtásioMarcela Gomes da Silva
Jul 3, 2013·Biotechnology Progress·Jennifer Leberknight, Todd J Menkhaus
Jul 15, 2015·Analytical and Bioanalytical Chemistry·Joao Benhur MokochinskiAlexandra Christine Helena Frankland Sawaya
May 22, 2017·Applied Biochemistry and Biotechnology·Ryan M KalinoskiThomas Canam

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