Comparative study of post-harvest physiology characteristics between Tricholoma giganteum and Agaricus bisporus

Tricholoma giganteum and Agaricus bisporus were keeping at 15℃ and 12℃ and humidity of 95%.Storage quality and physiological indexes of them were investigated. The results showed that:Tricholoma giganteum was non-climacteric fruit. It had a better storage quality during storage period. It's the change of moisture content, weight loss rate, the change of hardness, respiration rate, permeability and malondialdehyde content was higher than Agaricus bisporus. However, Tricholoma giganteum had higher soluble solids and vitamin C content. The activity of superoxide dismutase ( SOD) of Tricholoma giganteum was higher than Agaricus bisporus in after storage. At 6d, the activity of SOD had highest activity of the entire storage period and was 1.82 times than Agaricus bisporus. 2d after storage, the activity of catalase (CAT) was higher than Agaricus bisporus. The activity of peroxidase (POD) was higher than Agaricus bisporus in whole storage time.Especially when POD had injurious actions in after storage, the activity of POD of Agaricus bisporus increased, which lead to great harm effects of Agaricus bisporus. It was concluded that Tricholoma giganteum was antibrowning and storable. Owing to vitamin C, SOD, POD and POD were good at scavenging active oxygen, then delayed the lipid peroxidation speed.