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<p>Table grapes are among the most widely consumed fruits globally, valued for their sensory qualities and nutritional value. However, postharvest deterioration remains a&#xa0;significant challenge during cold storage. This study evaluated the effectiveness of a&#xa0;single prestorage ozone fumigation (3,&#xa0;5, and 7 mL/L), sulfur dioxide fumigation (2500 ppm), grape guards, and sodium metabisulphite powder (1 g/kg grapes) on disease incidence and physicochemical quality parameters of ‘Manik Chaman’ grapes stored at 5 ± 2 °C and 85–95% relative humidity for 70&#xa0;days. All treatments, except sodium metabisulphite powder and the untreated control, effectively suppressed postharvest decay caused by <i>Rhizopus stolonifer, Fusarium</i> spp., and <i>Penicillium</i> spp., with no symptoms observed throughout the 70-day storage period. Among them, 7 mL/L ozone fumigation proved to be the most effective, achieving the maximum shelf life (70&#xa0;days), while retaining the highest berry firmness (4.20 N) and titratable acidity (0.70%) and exhibiting the lowest physiological weight loss (13.05%). Furthermore, it received the highest scores in sensory evaluations. These findings indicate that 7 mL/L ozone fumigation offers an effective and environmentally friendly alternative for postharvest disease control and quality maintenance in table grapes, making it a&#xa0;promising technology for commercial cold storage applications.</p>

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Storage and Quality of Ozone-Fumigated ‘Manik Chaman’ Table Grapes: A Comparison with Sulfur Dioxide Treatment

  • 期刊论文

  • 发表日期：

    2025年9月22日

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  • Suneel Subray Hegde,
  • MD Jameel Jhalegar,
  • Viresh Mallayya Hiremath,
  • Sateesh Pattepur,
  • Abdul Kareem. M

摘要

Table grapes are among the most widely consumed fruits globally, valued for their sensory qualities and nutritional value. However, postharvest deterioration remains a significant challenge during cold storage. This study evaluated the effectiveness of a single prestorage ozone fumigation (3, 5, and 7 mL/L), sulfur dioxide fumigation (2500 ppm), grape guards, and sodium metabisulphite powder (1 g/kg grapes) on disease incidence and physicochemical quality parameters of ‘Manik Chaman’ grapes stored at 5 ± 2 °C and 85–95% relative humidity for 70 days. All treatments, except sodium metabisulphite powder and the untreated control, effectively suppressed postharvest decay caused by Rhizopus stolonifer, Fusarium spp., and Penicillium spp., with no symptoms observed throughout the 70-day storage period. Among them, 7 mL/L ozone fumigation proved to be the most effective, achieving the maximum shelf life (70 days), while retaining the highest berry firmness (4.20 N) and titratable acidity (0.70%) and exhibiting the lowest physiological weight loss (13.05%). Furthermore, it received the highest scores in sensory evaluations. These findings indicate that 7 mL/L ozone fumigation offers an effective and environmentally friendly alternative for postharvest disease control and quality maintenance in table grapes, making it a promising technology for commercial cold storage applications.