The effect of polypropylene film containing nano-hydroxyapatite on Physicochemical and microbiological properties of button mushrooms (Agaricusbisporus) under Modified atmosphere packaging

White Button mushroom (Agaricus bisporus) production is growing because of its attractive color, good flavor, aroma, and health benefits. However, the shelf life of fresh button mushrooms is limited, and quality is lost rapidly during storage. Thus, prolonging postharvest storage while maintaining quality would benefit the mushroom industry and consumers. This study evaluated the effect of packaging with a film containing nano-hydroxy apatite particles with and without MAP. Mushrooms were packaged in polypropylene containing 0, 1, and 3% Nanoparticles. The effect of Nano-hydroxyapatite particles (1 and 3%), MAP, and time (1, 3, 6, 9, and 12 days) was studied in 3 replications. Samples were stored at 4 ° C and assessed for their organoleptic properties, color, pH, moisture content, antioxidant activity, total phenolic content, vitamin C, and texture during 12 days. The result indicated that samples in packaging containing nanoparticles showed better sensory scores, the highest level of antioxidant activity (52.31%), vitamin C and total phenolic content (854.29 mg Gallic Acid Equivalent/kg). The lowest amount of psychrophilic, yeasts, and molds bacteria counts during 12 days of storage was observed in packages containing 1% Nano-hydroxyapatite particles in modified atmosphere packaging. The browning index (BI) in modified atmosphere packaged samples was significantly lower than in other packages. Based on findings, the use of nanofilm, as well as the modification of the atmosphere, had a positive effect on the control of mushroom respiration rate and an improvement in its physical, chemical, and mechanical properties.