Effects of combinational use of controlled atmosphere, cold storage and edible coating applications on shelf life and quality attributes of fresh-cut persimmon fruit

Abstract

Background: Persimmon fruits are cherished for their unique flavor and high nutrient content. In the present study, the effects of Aloe vera-based edible coatings (EC) added with 1% ascorbic acid, 1% citric acid and 5% calcium chloride in modified atmosphere packaging (MAP) and their impact on shelf-life quality of fresh-cut persimmon fruit, were investigated. The experimental design consisted of four treatments 1) Aloe vera edible coating + modified atmosphere packaging (EC + MAP), 2) untreated fruit packaged with MAP (CTR + MAP); 3) Aloe vera-based edible coating in passive atmosphere (EC PASSIVE); 4) untreated fruit in passive atmosphere (CTR PASSIVE). Persimmon fruit were stored at 5 °C for 3, 6 and 9 days. At each storage time, firmness, weight loss, sugar content, organic acids, polyphenol oxidase (PPO), browning index respiration rate, sensory and microbiological analysis, were investigated. Results: Our results were confirmed also by the sensory analysis in which both EC-treated fruit scored the highest values for positive descriptors.EC + MAP treatment showed the most effective result in maintaining total carotenoids, ascorbic acid, glucose and CO2 inside packaging reducing the PPO activity and the flesh browning of persimmon slices. EC + MAP treatment controlled the growth of total mesophilic microorganisms, pseudomonads, Enterobacteriaceae, yeasts and molds. Conclusions: The obtained results confirmed the importance of coating composition in controlling post-harvest decay and maintaining fruit quality.