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A study of rice lignin

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Abstract

For a comparison study of the dioxane lignins of rice husks and of ripe rice stems, the DLA of ripe rice stems has been isolated by a modification of Pepper's method with a yield of 5.25% on the plant and 25% on the Komarov lignin. The amounts of the main functional groups in the two lignins are similar. The semiempirical formulas have been calculated on the basis of elementary and functional analysis. IR, UV, and PMR spectra of the DLA have been taken. It has been established by gel chromatography on Sephadex G-75 that the DLA of ripe rice stems is polydisperse and the molecular weight has a number-average value of 3900, a weight-average value of 5300, and a mean value of 9800.

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Authors
  1. Z. K. Saipov
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  2. E. V. Borodina
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  3. Kh. A. Abduazimov
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Additional information

Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 375–378, May–June, 1983.

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Saipov, Z.K., Borodina, E.V. & Abduazimov, K.A. A study of rice lignin. Chem Nat Compd 19, 355–357 (1983). https://doi.org/10.1007/BF00579776

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  • DOI: https://doi.org/10.1007/BF00579776

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