Structural studies of arabinan-rich pectic polysaccharides from Abies sibirica L. Biological activity of pectins of A. sibirica

Structural studies of arabinan-rich pectic polysaccharides from Abies sibirica L. Biological activity of pectins of A. sibirica Full article

Journal

Carbohydrate Polymers
ISSN: 1879-1344 , E-ISSN: 0144-8617

Output data

Year: 2014, Volume: 113, Pages: 515-524 Pages count : 10 DOI: 10.1016/j.carbpol.2014.07.037

Authors

Shakhmatov Evgeny G. ¹ , Toukach Philip V. ² , Michailowa Еlena А. ³ , Makarova Elena N. ¹

Affiliations

1	Institute of Chemistry, Komi Science Centre, The Urals Branch of the Russian Academy of Sciences, Pervomaiskaya str., 48, Syktyvkar 167982, Russia
2	Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow 119991, Russia
3	Institute of Physiology, Komi Science Centre, The Urals Branch of the Russian Academy of Sciences, Pervomaiskaya str., 50, Syktyvkar 167982, Russia

Highly branched arabinan-rich pectic polysaccharides, containing 84% of arabinose, was extracted from wood greenery of Abies sibirica L. The structure of arabinan was studied by the 1D and 2D NMR spectroscopy. The macromolecule backbone was represented mainly by RG-I (molar ratio GalA:Rha ∼ 1.3:1) patterns with high degree of rhamnose branching. Side chains were comprised of 1,5-linked α-l-Araf residues (the major part of polymer mass), 1,3,5-di-O- and 1,2,3,5-tri-O-linked α-l-Araf residues, confirming the presence of highly branched 1,5-α-l-arabinan. Although most l-Araf were in α-anomeric form, minor terminal β-l-Araf-(1 → … was detected. 1,4-β-d-linked Galp residues found in the side chains account for minor AG-I or 1,4-galactan, as compared to arabinan. A tentative structure was proposed. Polysaccharides obtained from Siberian fir greenery were screened for biological activity. Galacturonan had a strongest stimulating effect on germination and growth rate of seeds, germs and roots of Triticum aestivum, Avena sativa, and Secale cereale.

Shakhmatov E.G. , Toukach P.V. , Michailowa Е.А. , Makarova E.N.
Structural studies of arabinan-rich pectic polysaccharides from Abies sibirica L. Biological activity of pectins of A. sibirica
Carbohydrate Polymers. 2014. V.113. P.515-524. DOI: 10.1016/j.carbpol.2014.07.037 WOS Scopus OpenAlex

≡ Web of science:	WOS:000343613000064
≡ Scopus:	2-s2.0-84907379370
≡ OpenAlex:	W1995650412