Summary
1. In aqueous ammonia, hydrolysis lignin from sunflower husks undergoes transformations connected with oxidation, demethoxylation, and the formation of amide and amino compounds.
2. The oxidation processes are accompanied by an increase in the amounts of aliphatic hydroxyls and carboxy groups.
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Additional information
Zaporozhe Branch, Donets Institute of Soviet Commerce. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 380–383, May–June, 1972.
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Koval'chuk, B.V., Forostyan, Y.N. Transformations of hydrolysis lignin from sunflower husks in aqueous ammonia. Chem Nat Compd 8, 369–371 (1972). https://doi.org/10.1007/BF00563751
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DOI: https://doi.org/10.1007/BF00563751