A heteroglycan from the mycelia of Pleurotus ostreatus: structure determination and study of antioxidant properties

Analysis and glycosyl composition of the exopolysaccharide isolated from submerged fermentation of Ganoderma lucidum CG144

“…Interestingly, the carbohydrate composition of the exopolysaccharide resembles the carbohydrate compositions in other fungal systems (other heteroglycans), which are known about their immunostimulatory activity and antioxidant properties [13,14]. Thus, research focused on exopolysaccharide from G. lucidum and all aspects of the immune system is certainly promising and should guide future studies.…”

Antioxidant and nitric oxide synthase activation properties of water soluble polysaccharides from Pleurotus florida

“…[30] A heteroglycan of Pleurotus ostreatus showed EC 50 value of 553 μg/ml. [31] Some transition metals, e.g., Fe 2+ , Cu + , Pb 2+ and Co 2+ , can trigger process of free radical reaction such as hydroxyl radical formation. [29] At 0.05-0.5 mg/ml, the chelating ability of Floridan was between 8.82% and 54.3%.…”

Preparation and structural characterization of poly-mannose synthesized by phosphoric acid catalyzation under microwave irradiation

“…74, 4.93, 5.08, 5.15, 5.19, and 5.26 ppm, respectively. Therefore, the H-1/C-1 signal at 4.74/103.0 ppm indicated that the residues should be assigned to (1 → 3)-linked ␤-d-mannopyranosyl (Patra et al, 2013;Prestegard, Miner, & Tyrell, 1983). However, the anomeric chemical shifts of H-1/C-1 at 5.08/104.6, 5.15/104.8, and 5.19/96.6 ppm should be assigned to (1 → 3)-linked ␣-d-mannopyranose residues (Cui, 2005;Ližičárová, Matulová, Machová, & Capek, 2007;Takahashi, Kudoh, Okawa, & Shibata, 2012).…”

“…However, the anomeric chemical shifts of H-1/C-1 at 5.08/104.6, 5.15/104.8, and 5.19/96.6 ppm should be assigned to (1 → 3)-linked ␣-d-mannopyranose residues (Cui, 2005;Ližičárová, Matulová, Machová, & Capek, 2007;Takahashi, Kudoh, Okawa, & Shibata, 2012). The signal of anomeric chemical shift of H-1/C-1 at 4.93/102.1 ppm corresponded to (1 → 3,6)-linked ␣-d-mannopyranose residues (Liu et al, 2013;Patra et al, 2013). The H-6/H-6 signals at 3.83/3.97 and 3.87/3.99 ppm indicated that the residues could be assigned to (1 → 6)-linked ␣-d-mannopyranose residues (Yan et al, 2014).…”