Physicochemical Properties and Shelf Life of Button Mushroom under Essential Oils with Chitosan Coating Treatment

Agaricus bisporus is the most produced mushroom in the world due to its unique taste and valuable nutritional properties. For this purpose, a study in the form of a completely randomized design with 5 treatments and 3 repetitions was conducted, which includes (control) (chitosan 2%) (chitosan 2% + cinnamon essence 2%) (chitosan 2% + angelica essence with a concentration of 200 ppm) (chitosan 2% + cinnamon essence 2% + angelica essence with a concentration of 200 ppm). The properties of Agaricus bisporus were evaluated on days 0, 7, 14, and 21. The results indicated 7 and 14 days after storage, chitosan casing as well as chitosan essence + angelica and cinnamon essence increased the phenolic acid content compared to the control and zero days after storage. On the 7th, 14th, and 21st days after storage, chitosan + angelica treatment showed the highest weight loss. The lowest weight loss was observed 21 days after storage in control and chitosan treatment. The highest number of soluble solids was observed 7 days after storage in chitosan + angelica essence and chitosan + cinnamon essence. The highest color index L* was observed at zero days after storage in the control treatment. The highest color index a* was observed on the 14th day of storage in the chitosan + angelica + cinnamon treatment and on the 7th day of storage in the chitosan treatment. The lowest color index a* was obtained on the 14th day of storage in the chitosan + cinnamon treatment and on the 7th day of storage in the chitosan + angelica + cinnamon and chitosan + cinnamon treatments. The highest b* color index was observed in the control treatment at 21 days after storage. In general, treatments showed different results on biochemical properties and post-harvest shelf life of Agaricus bisporus.