Combined antioxidant and sensory effects of active chitosan/zein film containing a-tocopherol on Agaricus bisporus

In this work, we have explored a new packaging material for the shelf life extension of Agaricus bisporus. The influence of active chitosan/zein films containing alpha-tocopherol on the physicochemical properties and enzyme activities of mushroom during the storage at 4. for 12 d was investigated. Mushroom packaged with chitosan/ zein/alpha-tocopherol (C/Z/T) film showed the lower weight loss, relative leakage rate, browning index, respiration rate, polyphenol oxidase, peroxidase activity and malondialdehyde content compared with control, chitosan film and chitosan/zein film. In all treatment groups, mushroom treated with C/Z/T film showed the highest firmness, catalase, superoxide dismutase activities, total phenolic content and DPPH radical scavenging activity. The results implied that C/Z/T film could improve the antioxidant properties and maintain the quality of mushroom.