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Non-oxidative and oxidative alkaline degradation of pectic acid

✍ Scribed by Klaus Niemelä; Eero Sjöström

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
355 KB
Volume
144
Category
Article
ISSN
0008-6215

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✦ Synopsis

As alkaline degradation products of pectic acid, 6 hydroxymonocarboxylic, 16 dicarboxylic, and 2 tricarboxylic acids were identified by g.l.c.-m.s. as their trimethylsilyl derivatives. In the absence of oxygen, the most abundant degradation products are 3-deoxy-2-C-(hydroxymethyl)pentaric, 2,3_dideoxypentaric, 2-deoxy-3-C-methyltetraric, malic, and 2l,4-anhydro-3-deoxy-2-C-(hydroxymethyl)pentaric acids, whereas, in the presence of oxygen, glycolic, oxalic, malic, 3-deoxypentaric, and 2-C-carboxy-3-deoxypentaric acids preponderate. The routes of formation of these acids show many similarities with those encountered in the alkaline degradation of cellulose.

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