Antioxidative substances (Non enzymatic) in oyster mushrooms (Pleurotus spp.)

Among the oysters, P. eous recorded highest levels of non-enzymatic antioxidative substances. Total glutathione content was significantly very high in P. eous, followed by P. sajor-caju, P. flabellatus and H. ulmarius. High level of total phenols, flavanoids, lycopene total carotenoid and vitamin A were recorded in P. eous. This was followed by P. sajor-caju, P. flabellatus and H. ulmarius. There was no significant difference in vitamin C content among the oyster mushrooms.