Evaluation of film packaging containing mesoporous nanosilica and oregano essential oil for postharvest preservation of mushrooms (Agaricus bisporus).

This study aimed to investigate the effect of biocomposite films containing oregano essential oil (OEO) and mesoporous nanosilica (MNS) on the quality of mushrooms (Agaricus bisporus). The variation in the physicochemical properties and enzymatic activity of A. bisporus stored at 4 ± 1°C for 12 d was evaluated. The results showed that the films containing OEO and MNS significantly delayed the aging of A. bisporus to varying degrees. A. bisporus packed with films effectively reduced weight loss, respiration rate, relative leakage rate, polyphenol oxidase and peroxidase activities, and malondialdehyde and microbial contents. Among all treatment groups, mushrooms packed with an OEO-MNS-TS film were better able to maintain hardness (3.11 MPa) on day 12, with a soluble protein content of 0.91g kg^-1, a soluble sugar content of 1.09g kg^-1, the total phenol content of 0.69g kg^-1, and flavonoid content of 0.99g kg^-1...