Polysaccharides, alkaline degradation

Phenylosazone formazan, the term, 132 Phosphagens, 263 Phosphoglucose isomerase, 94 Phosphomannoisomerase, 94 Polysaccharides, alkaline degradation of, 289... 

Aldoses and aldosides, cyclic acetals of, 20, 219-302 Alkaline degradation, of polysaccharides, 13, 289-329 Altrose,... 

The formation of 4,5-unsaturated uronic acid residues by enzymic or alkaline degradation of polysaccharides containing uronic acids has been the object of many investigations.214... 

The consumption of effective alkali in a kraft cook corresponds to about 150 kilogram sodium hydroxide per ton of wood. As a result of the alkaline degradation of polysaccharides, about 1.6 equivalents of acids are formed for every monosaccharide unit peeled from the chain. Of the charged alkali, 60-70% is required for the neutralization of these hydroxy acids, while the rest is consumed to neutralize uronic and acetic acids (about 10% of alkali) and degradation products of lignin (25-30% of alkali). 

A. I. Usov and S. V. Yarotsky, Polysaccharides of algae. 21. Alkaline degradation of sulfated mannan from the red alga Nemalion vermiculare Sur, Sov. J. Bioorg. Chem., 1 (1975) 700-703 (English translation from Bioorg. Khim., 1 (1975) 919—922). 

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