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.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Nunes CA,Lima CF,Barbosa LC,Colodette JL,Gouveia AF,Silvério FOdoi
10.1016/j.biortech.2010.01.012subject
Has Abstractpub_date
2010-06-01 00:00:00pages
4056-61issue
11eissn
0960-8524issn
1873-2976pii
S0960-8524(10)00055-6journal_volume
101pub_type
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