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<p>Mandarins are prone to significant postharvest losses due to their delicate nature and high moisture content. This study evaluated the efficacy of sodium nitroprusside (SNP) dips combined with cold storage (6 ± 1 °C, 90–95% RH) in extending the shelf life of ‘Kinnow’ mandarins. Fruits treated with SNP at 0.5, 1.0, and 2.0 mM were assessed for antioxidant defense enzymes (SOD, CAT, POD), malondialdehyde content, and quality parameters including weight loss, soluble solids, acidity, flavonoids, and ascorbic acid. After 75&#xa0;days, 2.0 mM SNP maintained higher antioxidant enzyme activity, lower oxidative damage, reduced weight loss, and soluble solid content, and preserved higher flavonoid, ascorbic acid, and antioxidant activity levels with higher consumer acceptability compared to the control. Association studies revealed strong positive correlations between various fruit quality traits. Overall, 2.0 mM SNP coupled with cold storage proved effective in mitigating postharvest deterioration and sustaining quality, offering a&#xa0;sustainable alternative to synthetic fungicide.</p>

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Sodium Nitroprusside Application Maintains Antioxidant Stability and Quality of Mandarins During Cold Storage

  • 期刊论文

  • 发表日期：

    2026年4月7日

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  • Manpreet Kumar,
  • Anil Kumar,
  • Kashish Bajaj,
  • Parmpal Singh Gill,
  • Sukhjit Kaur Jawandha,
  • Anil Sangwan

摘要

Mandarins are prone to significant postharvest losses due to their delicate nature and high moisture content. This study evaluated the efficacy of sodium nitroprusside (SNP) dips combined with cold storage (6 ± 1 °C, 90–95% RH) in extending the shelf life of ‘Kinnow’ mandarins. Fruits treated with SNP at 0.5, 1.0, and 2.0 mM were assessed for antioxidant defense enzymes (SOD, CAT, POD), malondialdehyde content, and quality parameters including weight loss, soluble solids, acidity, flavonoids, and ascorbic acid. After 75 days, 2.0 mM SNP maintained higher antioxidant enzyme activity, lower oxidative damage, reduced weight loss, and soluble solid content, and preserved higher flavonoid, ascorbic acid, and antioxidant activity levels with higher consumer acceptability compared to the control. Association studies revealed strong positive correlations between various fruit quality traits. Overall, 2.0 mM SNP coupled with cold storage proved effective in mitigating postharvest deterioration and sustaining quality, offering a sustainable alternative to synthetic fungicide.