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<p>Fruits with a&#xa0;longer shelf life are essential for market availability and easier transportation across longer distances. In this situation, regulating the climacteric character of mangoes requires appropriate treatments to reduce post-harvest degradation during storage. This research investigates the combined effect of on-tree bagging and postharvest calcium chloride (CaCl<sub>2</sub>) treatments on the storability, antioxidant enzyme activity, and physiological traits of ‘Amrapali’ mangoes under ambient storage for 12&#xa0;days. Bagged mangoes were treated with different concentrations of 0% CaCl<sub>2</sub> (T1), 1.5% CaCl<sub>2</sub> (T2), and 2% CaCl<sub>2</sub> (T3). Unbagged fruit was used as a&#xa0;control (T0). Results demonstrate that T3 treatment, compared to control, significantly maintains firmness (18.16, 7.2 <i>N</i>), total sugar (14.37, 13.05%), titratable acidity (0.09, 0.08%), ascorbic acid (17.08, 8.53 mg/100 g), total phenolic content (89.84, 77.67 mg/100 g) and antioxidant capacity (67.43, 60.44 µmol/g) while effectively reducing weight loss (10.37, 14.65%) and delaying ripening by lowering ethylene production, respiration rate, soluble solid content (18.09, 20.06 <sup>o</sup>Brix), pH (5.13, 5.70), and disease incidence (5.53, 19.07%) at 12th&#xa0;day of storage. The results also revealed fruits displayed advanced CAT and POD activity, whereas lower PPO, MDA, and H<sub>2</sub>O<sub>2</sub> were detected. Hence, the T3 treatment noticeably reduces browning color and enhances antioxidant defense mechanisms, thereby extending the shelf life of the ′Amrapali’ mango. Future research will use a&#xa0;molecular approach to reveal the mechanism of calcium chloride in on-tree bagged fruits of mango.</p>

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Influence of Calcium Chloride Treatment On the Storability, Antioxidant Enzymes and Physiology in On-tree Bagging of ‘Amrapali’ Mango at Ambient Storage

  • 期刊论文

  • 发表日期：

    2025年10月23日

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  • Tauhid Billah,
  • Atikur Rahman,
  • Rukunuzzaman,
  • Ananya Khatun,
  • Maruf Ahmed,
  • Tariqul Islam

摘要

Fruits with a longer shelf life are essential for market availability and easier transportation across longer distances. In this situation, regulating the climacteric character of mangoes requires appropriate treatments to reduce post-harvest degradation during storage. This research investigates the combined effect of on-tree bagging and postharvest calcium chloride (CaCl2) treatments on the storability, antioxidant enzyme activity, and physiological traits of ‘Amrapali’ mangoes under ambient storage for 12 days. Bagged mangoes were treated with different concentrations of 0% CaCl2 (T1), 1.5% CaCl2 (T2), and 2% CaCl2 (T3). Unbagged fruit was used as a control (T0). Results demonstrate that T3 treatment, compared to control, significantly maintains firmness (18.16, 7.2 N), total sugar (14.37, 13.05%), titratable acidity (0.09, 0.08%), ascorbic acid (17.08, 8.53 mg/100 g), total phenolic content (89.84, 77.67 mg/100 g) and antioxidant capacity (67.43, 60.44 µmol/g) while effectively reducing weight loss (10.37, 14.65%) and delaying ripening by lowering ethylene production, respiration rate, soluble solid content (18.09, 20.06 oBrix), pH (5.13, 5.70), and disease incidence (5.53, 19.07%) at 12th day of storage. The results also revealed fruits displayed advanced CAT and POD activity, whereas lower PPO, MDA, and H2O2 were detected. Hence, the T3 treatment noticeably reduces browning color and enhances antioxidant defense mechanisms, thereby extending the shelf life of the ′Amrapali’ mango. Future research will use a molecular approach to reveal the mechanism of calcium chloride in on-tree bagged fruits of mango.