نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار، گروه کشاورزی، دانشگاه پیام نور، تهران، ایران
2 مربی، گروه کشاورزی، دانشگاه پیام نور، تهران، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study was conducted to evaluate the effects of emulsion-based coatings formulated with bacterial cellulose nanocrystals (BCNCs) and gelatin (GelA), containing cinnamon essential oil (CEO) at three concentration levels (1200, 1800, and 2400 µL/L), on the ripening and senescence processes of Golden Delicious apples during cold storage (60 days at 4 °C). The results showed that application of the coatings significantly reduced fruit weight loss compared with uncoated samples, decreasing it from approximately 14.68% to about 8.89% in the treatment containing 2400 µL/L cinnamon essential oil. In addition, increasing the concentration of cinnamon essential oil showed a direct relationship with respiration rate and ethylene production. Coated samples at all concentration levels exhibited higher flesh firmness than the control samples, with the highest firmness observed at 2400 µL/L cinnamon essential oil (18.23 N at 2400 µL/L compared with 16.69 N at 1200 µL/L after 60 days). This trend was consistent with the changes observed in indices such as titratable acidity, soluble solids content, pH, ascorbic acid content, and the activities of polyphenol oxidase (PPO) and peroxidase (POD) enzymes. Overall, the use of BCNCs–GelA/CEO coating systems preserved the physicochemical quality of apples, controlled the senescence process, and extended their shelf life under cold storage conditions. The findings of this study indicate that the application of such coatings can be an effective strategy for enhancing postharvest longevity and reducing economic losses along the fresh fruit supply chain.
کلیدواژهها [English]