𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Non-oxidative and oxidative degradation of d-galacturonic acid with alkali

✍ Scribed by Klaus Niemelä; Eero Sjöström

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

No coin nor oath required. For personal study only.

✦ Synopsis

Degradation products from non-oxidative and oxidative treatment of D-galacturonic acid with alkali have been analysed by g.l.c.-m.s.; 13 hydroxy monocarboxylic acids and 26 dicarboxylic acids were identified in addition to several isomerisation products. In the absence of oxygen, the main degradation products were 3-deoxy-Zyxo-hexaric, 3-deoxy-xylo-hexaric, malic, tartronic, C-methyltartronic, lactic, and 3-deoxytetronic acids. In the presence of oxygen, arabinaric, threaric, malic, tartronic, and glycolic acids were formed in large proportions. The routes of formation for most of the compounds are outlined.

📜 SIMILAR VOLUMES

Non-oxidative and oxidative alkaline deg
Non-oxidative and oxidative alkaline degradation of pectic acid
✍ Klaus Niemelä; Eero Sjöström 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 355 KB

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\_dide

Thermal degradation of poly(ethylene oxi
Thermal degradation of poly(ethylene oxide) and polyacrylamide with ascorbic acid
✍ S. P. Vijayalakshmi; Ashok Raichur; Giridhar Madras 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 211 KB 👁 2 views

## Abstract The degradation of poly(ethylene oxide) and polyacrylamide in aqueous solution was studied with ascorbic acid. Gel permeation chromatograph was used to monitor molecular weight dynamics with time. A model based on continuous distribution kinetics showed that the experimental data matche