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Quantitative1H and13C NMR spectroscopies of cottonplant dioxane lignin |
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| Authors: | A. V. Rokhin L. V. Kanitskaya D. F. Kushnarev G. A. Kalabin L. S. Smirnova Kh. A. Abduazimov B. Kh. Pulatov |
| Affiliation: | 1. Irkutsk State University, USSR 2. Irkutsk Institute of Organic Chemistry, Siberian Division of the Russian Academy of Sciences, USSR 3. Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent |
| Abstract: | A comparative analysis has been made of the dioxane lignins of the stems, seedling shoots, and seed coats of the cotton plant. The ratio of p-hydroxyaromatic, guaiacyl, and syringyl units in the macromolecules of the lignins has been determined, and so have the amounts of functional groups and bonds. It has been established that the main difference between the dioxane lignins from seedling shoots and seed coats of the cotton plant, on the one hand, and the lignin from the woody stems, on the other hand is a lower content of syringyl and guaiacyl units in the former. |
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