Chromatographische Fraktionierung von Pektinstoffen an Diäthylaminoäthyl‐Cellulose. 15. Mitteilung über Ionenaustauscher

Pectin preparations were fractionated by anion exchange chromatography on DEAE (diethylaminoethyl)‐cellulose columns. The preparations examined by this technique proved to be heterogeneous in their content of non‐uronide side groups (consisting of arabinose and galactose units), in their degree of esterification with methanol, and in their degree of polymerization. The pectic substances are fixed the more strongly to the cellulose derivative, the lower their content in side groups, the lower their degree of esterification, and the higher their degree of polymerization. This could be verified by studying the chromatographic behaviour of pectin preparations differing in these three mentioned characteristics.