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Polysaccharides oxidative alkaline degradation

The enolate ion (XXXV), formed from a carbonyl group at either C2 or C3, is the same ion that is the active participant in the alkaline degradation of polysaccharides by the -alkoxy carbonyl mechanism. Hence, it has been postulated that oxidized polysaccharides of the keto (carbonyl) type are degraded in alkali by an alkoxy-elimination reaction. The chains... [Pg.321]

Periodate-oxidized polysaccharides are sensitive to alkaline degradation but lose this property on reduction of the aldehydic groups to alcohols or on their oxidation to carboxylic acids with chlorous acid or bromine. [Pg.701]

An e.s.r. study on the alkaline, oxidative degradation of mono- and polysaccharides has revealed the common dominant radical (22) from 2,5-hydroxy- -benzosemiquinone, which was considered to arise from air oxidation of phenolics from alkali catalyzed fragmentatlon-... [Pg.225]

See other pages where Polysaccharides oxidative alkaline degradation is mentioned: [Pg.140]    [Pg.215]    [Pg.221]    [Pg.463]    [Pg.83]    [Pg.139]    [Pg.290]    [Pg.315]    [Pg.328]    [Pg.284]    [Pg.187]    [Pg.76]    [Pg.87]    [Pg.111]    [Pg.361]    [Pg.597]    [Pg.157]    [Pg.162]    [Pg.199]    [Pg.322]    [Pg.401]    [Pg.103]    [Pg.187]    [Pg.48]    [Pg.439]    [Pg.237]    [Pg.232]    [Pg.440]    [Pg.107]    [Pg.11]    [Pg.367]   
See also in sourсe #XX -- [ Pg.157 , Pg.158 , Pg.159 , Pg.160 , Pg.161 ]



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Alkaline oxidation

OXIDATION OXIDATIVE DEGRADATION

Oxidations degradative oxidation

Oxidative degradation

Polysaccharide-degrading

Polysaccharides degradation

Polysaccharides oxidation

Polysaccharides oxidized

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