Summary
The phenolic hydroxyl group content of wood lignin has been determined in situ by a periodate oxidation method for four softwood and six hardwood species. Hardwood lignins, in contrast to softwood lignins, showed a significant variation among different species in this functional group content which decreased with an increase in the proportion of syringyl units in the wood lignin.
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Lai, YZ., Guo, XP. Variation of the phenolic hydroxyl group content in wood lignins. Wood Sci.Technol. 25, 467–472 (1991). https://doi.org/10.1007/BF00225239
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DOI: https://doi.org/10.1007/BF00225239