Structural studies of an immunoenhancing water-soluble glucan isolated from hot water extract of an edible mushroom, Pleurotus florida, cultivar Assam Florida

Structure characterization and antitumor activity of an α β-glucan polysaccharide from Auricularia polytricha

“…Ma, Wang, and Zhang (2008) reported a water soluble β-glucan with significant antitumor activity which was composed of a main chain of (1→4)-linked D-glucopyranosyl with branching points at O-6 of (1→6)-linked D-glucopyranosyl residues. Furthermore, according to the reported glucans, the α-and β-configuration can also affect the activity (Cui & Chisti, 2003;Ma et al, 2010;Roy et al, 2009;Wu et al, 2010). In the present study, we obtained a glucan containing α,β-configuration and (1→3), (1→4)-linkage from A. polytricha, the homopolysaccharide of AAFRC representing a previously undocumented novel structure, which has not been reported previously.…”

Purification and characterization of a glucan from Bacillus Calmette Guerin and the antitumor activity of its sulfated derivative

“…However, the H-1(5.05 ppm) and C-1(98.61 ppm) signals of residue C could be assigned from 1 H and 13 C NMR spectrum, which indicated that residue C was an ␣-linked residue. Besides, the anomeric proton chemical shifts of residue C with respect to the standard value (Rout, Mondal, Chakraborty, & Islam, 2006;Roy et al, 2009) suggested that residue C was 1-linked ␣-d-glucopyranose. Along with the results of methylation analysis, this confirmed that the structure of sugar residue C consists of Glcp-(1→.…”

Structural characterization and study of immunoenhancing and antioxidant property of a novel polysaccharide isolated from the aqueous extract of a somatic hybrid mushroom of Pleurotus florida and Calocybe indica variety APK2

“…Four different polysaccharides, water-insoluble (1 → 3)(1 → 6)-␤-d-glucans [8], water-soluble (1 → 6)-␣-d-glucan [9], NaCl soluble (1 → 3)-, (1 → 6)-␣, ␤-glucan [10], and a water-soluble heteroglycan [11] of P. florida were reported by our group. A water-soluble branched glucan [12] from aqueous extract and other important glucans [13] from alkaline extract of P. florida cv., Assam florida were also reported. Calocybe indica [14], commonly known as the milky mushroom, was commercialized as a new variety C. indica, var.…”