tailieunhanh - Impact of passive modified atmosphere packaging on physicochemical properties, bioactive compounds, and quality attributes of sweet pomegranates

The effects of two different types of modified atmosphere packaging (MAP) on the physicochemical properties, biochemical composition, and storage quality of sweet pomegranate variety Beynarı were investigated during long-term storage. | Turkish Journal of Agriculture and Forestry Research Article Turk J Agric For (2016) 40: 475-488 © TÜBİTAK doi: Impact of passive modified atmosphere packaging on physicochemical properties, bioactive compounds, and quality attributes of sweet pomegranates Nurten SELÇUK, Mustafa ERKAN* Department of Horticulture, Faculty of Agriculture, Akdeniz University, Antalya, Turkey Received: Accepted/Published Online: Final Version: Abstract: The effects of two different types of modified atmosphere packaging (MAP) on the physicochemical properties, biochemical composition, and storage quality of sweet pomegranate variety Beynarı were investigated during long-term storage. Pomegranates were harvested at the commercial harvest stage and packed in two different commercial types of MAP (MAP1, sealed in packages made of Xtend® film; MAP2, sealed in bags made of ZOEPAC). Unpacked fruits stored in plastic boxes were used as the control. Following packaging treatments, all packed and unpacked fruit samples were stored at 6 ± °C and 90 ± 5% relative humidity for 120 days, and they were removed from storage at 40-day intervals for different quality analyses. Furthermore, after each storage period, fruits were removed and kept at 20 °C for 3 days to simulate a period of shelf-life. During storage, O2 levels decreased and CO2 levels increased inside both packages, and a steady-state atmosphere (– kPa O2 and – kPa CO2) was obtained at day 40 in cold storage. The MAPs significantly reduced weight loss and external physiological disorders, maintained visual quality, and prevented the decline of skin color, L* (lightness), C* (chroma), and hº (hue angle) compared to control fruit. MAP2 was the most effective packaging in reducing weight loss both in cold storage and shelf-life conditions. Titratable acidity and total soluble solids decreased during storage and .