CHEMICAL AND (13)CNMR STUDIES OF ENTEROLOBIUM-CYCLOCARPUM GUM AND ITSDEGRADATION PRODUCTS

Citation
Gl. Depinto et al., CHEMICAL AND (13)CNMR STUDIES OF ENTEROLOBIUM-CYCLOCARPUM GUM AND ITSDEGRADATION PRODUCTS, Phytochemistry, 37(5), 1994, pp. 1311-1315
Citations number
28
Categorie Soggetti
Plant Sciences
Journal title
ISSN journal
00319422
Volume
37
Issue
5
Year of publication
1994
Pages
1311 - 1315
Database
ISI
SICI code
0031-9422(1994)37:5<1311:CA(SOE>2.0.ZU;2-0
Abstract
A structural study of the gum exudate from Enterolobium cyclocarpum ha s been carried out using chemical methods and C-13 NMR spectroscopy. T he results reveal that the structure of this gum is essentially a beta -(1 --> 3)-galactan. Some galactoses are 6-O-linked and others also oc cur as terminal residues. There is evidence that supports the presence of alpha-L-arabinofuranose and beta-L-arabinopyranose. beta-D-Glucuro nic acid may be present as terminal and internal residues, while the 4 -O-methyl-alpha-D-glucuronic acid residues exist predominantly in inte rnal positions.