Chemical Characteristics of Selenium Polysaccharide from Pleurotus ostreatus and Antioxidant Activities in vitro

Pleurotus ostreatus as one of the most commercialized and popular fungi species was cultivated and consumed as traditional food for long time in many Asian countries like China, Korea and Japan [1], it contains many biological active materials, such as protein, fiber, carbohydrates, fat, trace elements and ash. Polysaccharide, one of the main bioactive components of P. ostreatus has received more and more academic attentions owing to its antioxidant, immunomodulatory, anti-tumor and antimicrobial properties [2-4].