Further structural studies of anti-complementary acidic heteroglycans from the leaves of Panax ginseng C.A. Meyer

✍ Scribed by Qi-Pin Gao; Hiroaki Kiyohara; Haruki Yamada

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 940 KB
• Volume: 196
• Category: Article
• ISSN: 0008-6215
• DOI: 10.1016/0008-6215(90)84110-g

✦ Synopsis

Methylation analysis indicated that IN and IIN also contained high-molecular-weight 6-linked galactan and 4-linked glucan, and that IA and IIA consisted mainly of 2-linked Rha, 4-linked GalA, and terminal and 6-linked Gal. IIA contained more 2-linked Rha than IA.

Endo-a-o-( l-*4)-polygalacturonase-mediated digestion of GL-PIV produced a high-molecular-weight fraction (PG-1) which was rich in neutral sugars, fragments of intermediate size (PG-2), and oligosaccharides (PG-3). PG-1 contained a rhamnogalacturonan core, galactan (which mainly comprised terminal, 6-linked, and 4,6-disubstituted Gal), and 4-linked glucans. PG-2 contained (1+4)-linked w galacturonan partially branched at position 2 or 3 and a rhamnogalacturonan core in addition to small proportions of Gal and Glc. PG-3 contained large proportions of oligogalacturonides .