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<p>Plums are highly perishable in nature, leading to swift quality deterioration of fruit owing to substantial moisture loss and enzymatic degradation. The synergistic effect of chitosan (CH) &amp; sodium nitroprusside (SNP) coatings on quality parameters and enzymatic activities involved in softening of plum fruits stored for 40&#xa0;days at low temperature was evaluated. The findings showed that composite CH 2% + SNP 2&#xa0;mM coating performed well to slow down weight loss, respiration rate and maintained Soluble solid content (SSC), Titratable acidity (TA), ascorbic acid (AA) and total carotenoids content (TCC) in stored plum fruits against control treatment. Furthermore, the coating reduced the activity of the enzymes that reduce the integrity of the cell wall e.g. pectin methyl esterase (PME), polygalacturonase (PG), and cellulase (CL) and maintained fruit firmness through extended storage. Additionally, CH 2% + SNP 2&#xa0;mM coated fruits exhibited the least spoilage, decreased electrolyte leakage and malondialdehyde (MDA) content compared to the control. Overall, the application of composite CH 2% + SNP 2&#xa0;mM is an effective post-harvest treatment for plum fruits under storage.</p>

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Modulation of Cell Wall-Degrading Enzymes and Quality Preservation in Plums via Chitosan–Sodium Nitroprusside Composite Coatings

  • 期刊论文

  • 发表日期：

    2026年1月12日

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  • Zahwa Jan,
  • Sukhjit Kaur Jawandha,
  • Parmpal Singh Gill,
  • Diksha Dhiman,
  • Shalini Jhanjhi

摘要

Plums are highly perishable in nature, leading to swift quality deterioration of fruit owing to substantial moisture loss and enzymatic degradation. The synergistic effect of chitosan (CH) & sodium nitroprusside (SNP) coatings on quality parameters and enzymatic activities involved in softening of plum fruits stored for 40 days at low temperature was evaluated. The findings showed that composite CH 2% + SNP 2 mM coating performed well to slow down weight loss, respiration rate and maintained Soluble solid content (SSC), Titratable acidity (TA), ascorbic acid (AA) and total carotenoids content (TCC) in stored plum fruits against control treatment. Furthermore, the coating reduced the activity of the enzymes that reduce the integrity of the cell wall e.g. pectin methyl esterase (PME), polygalacturonase (PG), and cellulase (CL) and maintained fruit firmness through extended storage. Additionally, CH 2% + SNP 2 mM coated fruits exhibited the least spoilage, decreased electrolyte leakage and malondialdehyde (MDA) content compared to the control. Overall, the application of composite CH 2% + SNP 2 mM is an effective post-harvest treatment for plum fruits under storage.