A study of the polysaccharides,hydrolysates, and sulfuric-acid lignin of cottonplant stems

A comparative investigation of the acid hydrolysis of the guza-paya [stems and bolls] and seed husks of the cotton plant has shown that the hydrolysates differ in their quantitative levels of monosaccharides, but in the pentose hydrolysates xylose predominates in both cases. The extracts after the preliminary enrichment of the raw material contain a large amount of xylose. The sulfuric-acid lignin obtained from the guza-paya contains a far smaller amount of unhydrolyzed polysaccharide and a larger amount of functional groups than the lignin from the husks.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 48–52, January–February, 1987.