Abstract: Fractions containing arabinogalactan proteins (AGPs) and pectic polysaccharides were isolated from above-ground parts of Heracleum sosnowskyi. Major units of their structure were elucidated using ion-exchange chromatography, gel chromatography, and NMR spectroscopy. The carbohydrate backbone of the polysaccharides consisted of 1,3--d-galactopyranosyl residues, whereas side chains of the branched region consisted of the residues of 1,6--galactopyranose, 1,5--l-arabinofuranose, 1,4--d-glucuronic acid, and 1,6--d-glucopyranose. The branching points were identified as 1,3,6--dgalactopyranose residues. Side chains were terminated with -d-galactopyranose, -l-arabinofuranose and -l-rhamnopyranose. A significant part of the side-chain -1,6-galactan was substituted at C6 by 4- OMe--d-glucuronic acid. A minor part of glucuronic acid was included in the -Rhap-(1→4)--GlcA-(→ fragment. All the studied fractions contained 1,4--d-galacturonic acid as well.

Cite: Shakhmatov E.G. , Toukach P.V. , Kuznetsov S.P. , Makarova E.N.
Structural characteristics of water-soluble polysaccharides from Heracleum sosnowskyi Manden
Carbohydrate Polymers. 2014. V.102. P.521-528. DOI: 10.1016/j.carbpol.2013.12.001 WOS Scopus OpenAlex

Dates:

Submitted:	Aug 23, 2013
Accepted:	Dec 1, 2013
Published online:	Dec 8, 2013

Identifiers:

≡ Web of science:	WOS:000331779600067
≡ Scopus:	2-s2.0-84891423057
≡ OpenAlex:	W2068941171

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