Modified atmosphere packaging for extending the shelf life of fresh Agaricus bisporus

Abstract

The objective of the research was to determine the impact of combined effect of modified atmosphere packaging (MAP), used films and storage time on the shelf-life improvement of button mushrooms (Agaricus bisporus). Four MAP groups, two types of films and control group (PVC wrap) were used. The scope of research included measurements of the weight loss, pH, color, veil opening, and texture as indicators of mushroom quality at the beginning, 4th, 7th, 11th, and 14th day of storage at 2°C. Statistically significant differences (p < 0.001) in all quality parameters depending on the time of storage were reported. Application in packages 10% and 20% oxygen (MAP2 and MAP4) and film of a thickness of 44 μm (F1) can inhibit the browning of the button mushrooms. The optimal conditions for extending the shelf life of mushrooms were found for packaging with 20%O2, 0%CO2, 80%N2 and film of a thickness of 44 μm. Practical applications: Agaricus bisporus tend to lose quality right after harvest. Fresh mushrooms’ shelf life is limited to 1–3 days at ambient temperature and to 4–7 days at 4°C. According to the presented results, it is possible to maintain good quality of mushrooms up to 14 days for product packed in modified atmosphere with 10%O2, 5%CO2, 80%N2 and 20%O2, 0%CO2, 80%N2 and film of a thickness of 44 μm. These conditions can inhibit the browning of the button mushrooms.