University of Tehran Press Iranian Journal of Biosystem Engineering 2008-4803 50 4 2020 01 21 Evaluation the Effect of Nano Silica Packaging Film on the Properties of Button Mushroom during Storage Time Evaluation the Effect of Nano Silica Packaging Film on the Properties of Button Mushroom during Storage Time 895 907 72227 10.22059/ijbse.2019.277256.665169 FA Rashid Gholami Department of Biosystem Engineering,Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran. Ebrahim Ahmadi Department of Biosystem Engineering,Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran. Journal Article 2019 05 11 In this research, some methods such as chitosan coating, nanocomposite film and modified atmosphere packaging were used to preserve button mushroom quality during storage time. Harvested mushrooms were divided in 2 groups, with and without coating (1% chitosan coating), then packed in 3 types of packages (common, Nano and Nano+MAP packages). Nano+MAP packages were contain 10% O₂, 10% CO₂ and 80% N₂. All samples were placed at 4 °C for 10 days. Physical (moisture and color indecies), chemical (pH and TSS) and mechanical properties (Emod and Fmax) were measured and calculated every other days. In the other hand, O₂and CO₂ changes were also measured during storage time. The results showed that chitosan coating, type of packaging, storage time and their mutual effects had significant effects on measured and calculated parameters. Application of nanofilm due to low permeability to O₂ and CO₂, and also MAP condition had positive effect on control of respiration and preservation of physical, mechanical and chemical properties of mushroom.  In this research, some methods such as chitosan coating, nanocomposite film and modified atmosphere packaging were used to preserve button mushroom quality during storage time. Harvested mushrooms were divided in 2 groups, with and without coating (1% chitosan coating), then packed in 3 types of packages (common, Nano and Nano+MAP packages). Nano+MAP packages were contain 10% O₂, 10% CO₂ and 80% N₂. All samples were placed at 4 °C for 10 days. Physical (moisture and color indecies), chemical (pH and TSS) and mechanical properties (Emod and Fmax) were measured and calculated every other days. In the other hand, O₂and CO₂ changes were also measured during storage time. The results showed that chitosan coating, type of packaging, storage time and their mutual effects had significant effects on measured and calculated parameters. Application of nanofilm due to low permeability to O₂ and CO₂, and also MAP condition had positive effect on control of respiration and preservation of physical, mechanical and chemical properties of mushroom.  https://ijbse.ut.ac.ir/article_72227_5f8df76407b6b73c7ad8422e3826b020.pdf