Abstract
THE structure of cotton α-cellulose has been developed on the assumption that its building unit is glucose only. It is, of course, believed that raw cotton contains small amounts of pentoses which are removed by prolonged boiling in alkali and subsequent treatment of the product with 17.5 per cent sodium hydroxide during the preparation of purified α-cellulose. Chromatographic analysis has shown1 that raw cotton contains glucose, xylose, arabinose and a trace of rhamnose. Adams and Bishop2 reported that cotton α-cellulose does not contain any pentose. But our findings1,3 that a part of the pentoses is very strongly associated by chemical bonds with jute α-cellulose, which was also later confirmed by Adams and Bishop2,4, suggested reinvestigation of the association of these pentoses with purified cotton α-cellulose.
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References
Das, Mitra and Wareham, Science and Culture, 18, 249 (1952).
Adams and Bishop, Nature, 172, 28 (1953).
Das, Mitra and Wareham, Nature, 171, 613 (1953); [174, 228 (1954)].
Adams (private communications, May 1953 and January 1954).
Corey and Gray, cf. Dorée, “Methods of Cellulose Chemistry”, 2 (London, Chapman and Hall, 1947).
Das, Choudhuri and Wareham, Science and Culture, 18, 197 (1952).
Das and Wareham, J. Sci. Ind. Res. (India), [13 B, 743 (1954)].
Das, paper read at the symposium on “High Polymers” held at the Indian Association for the Cultivation of Science on March 29, 1954.
Sen and Roy, Nature, 173, 298 (1954).
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DAS, D., MITRA, M. & WAREHAM, J. Structure of Cotton Alpha-Cellulose. Nature 174, 1058–1059 (1954). https://doi.org/10.1038/1741058a0
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DOI: https://doi.org/10.1038/1741058a0
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