Investigating the nano-films effect on physical, mechanical properties, chemical changes, and microbial load contamination of white button mushrooms during storage

Nutrient-rich edible white buttonmushrooms were coated with Chitosan (1%), Chitosan/nanosilica, and Chitosan/nano-titanium and then stored at 4 °C toinvestigate the physical, mechanical properties, chemical changes, and microbial load contamination at an interval of 3 days up to a 12 day storage period. It was noticed that Chitosan/nano-titanium and Chitosan/nano-silica preserved the weight loss percentages as 11.80% and 12.69%, respectively. Treatment with Chitosan/nano-silica coating was found to havepositive impacts on the overall color parameters. Both of the nanocoating films enhanced headspace gas compositions and firmness. Chitosan/nano-silica samples recorded the least electrolyte leakage value (24.44%), as low oxygen gas concentration can reduce the respiration rate, weight loss, and cap opening. Chitosan/nano-titanium treatment showed the lowest cap opening value (19.58%), PPO activity (16.98 mg^-1 protein), and microbial load contamination (6.12 log CFU/g) at the end of the whole storage period, suggesting that nano-films are a promising preservation method forprolonging the white button mushroom’s shelf-life.