The Hypoglycaemic Effect of the Components from Pleurotus eryngii was evaluated on model In vitro and In vivo

Four structural substances were extracted from P. eryngii, including PEE-1, PEE-2, PEE-3 and PEE-4. The chemical analysis was conducted to measure the contents of polysaccharide and protein in PEE-1, results found that they were 10.78% and 26.66% respectively. PEE-2, PEE-3 and PEE-4 were respectively identified as β-glucan, chitosan and D-glucosamine hydrochloride by FT-IR, GC, HPLC and HPLC-MS. The results showed that PEE-1, PEE-2 and PEE-3 could inhibit the activity of α-glycosidase from the rabbit isolated small intestine, while the PEE-4 had no inhibitory effect. At the same concentration, the PEE-1 showed more significantly inhibitory effects on α- glycosidase activity than Glucobay (P 0.05). Results showed that PEE-1 had the hypoglycaemic function in hyperglycaemia animals, and it could be applied in the research and production of hypoglycaemic health food.