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Retrospect and prospect in carbohydrate chemistry and biochemistry


, : Retrospect and prospect in carbohydrate chemistry and biochemistry. Memoirs of the College of Agriculture, Kyoto University (102): 96

In an extensive discussion, under the chapter headings; Synthesis of nucleotides; Oxidation and polymerization of sugars; Sialic acid and related substances; Structure and function of mucopolysaccharides; and Conformation of carbohydrates, brief mention is made of the sialic acid contents of some biological materials, including human colostrum (i) 2, (ii) 4 and (iii) 6 days post-partum; acetone powder of (iv) human and (v) cows' colostrum; cows' colostrum (vi) 1 and (vii) 2 days post-partum; (viii) cows' milk; and (ix) hen egg yolk and (x) white, as analysed by 3 different methods, i.e. thiobarbituric acid (TBA), resorcinol, and direct Ehrlich methods. Sialic acid contents (as mg N-acetylneuraminic acid/100 g by TBA method) were (i) 294, (ii) 138, (iii) 67.7, (iv) 1110, (v) 450, (vi) 145, (vii) 99.5, (viii) 23.5, (ix) 101 and (x) 15.6. Results are also given for many edible vegetables, fish and shellfish. In another chapter, results are given for analyses of mucopolysaccharides and glycoproteins in human and cows' colostrums.

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