The hydroxyl, methoxyl, carbonyl, and carboxyl groups are the most important chemical functional groups in lignin, and they can be used for identification of lignin. Lignin functionality is a key factor for further applications.
In the paper Jablonsky et al. (2015) was proposed a simple method for the prediction of methoxyl group’s content in the lignin. The content of methoxyl groups (% wt) of lignin was calculated using the following equation:
OCH3 = -18.5769 + 4.0658(H) +0.34543(O),
simple manual calculation and require only hydrogen and oxygen contents (wt % dry materials basis)
Jablonsky, M., Botkova, M., and Adamovska, J. 2015. Prediction of content of methoxyl groups in lignin from ultimate analysis. Cell. Chem. Technol. 49(2): 165-168.
Article Prediction of methoxyl groups content in lignin based on ult...
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