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<p>Bioactive compounds in pomegranate peels are promising natural preservatives, and edible biopolymer coatings can reduce postharvest losses in highly perishable fruits. Here, we compared aqueous pomegranate peel extract (PPE) dipping (1.5, 2.0, 2.5, and 3.0% w/v) with a composite coating of 1.0% (w/v) carboxymethyl cellulose (CMC) enriched with PPE at the same concentrations for strawberry preservation. Strawberries were stored at 4 ± 1&#xa0;°C for 10 days and evaluated for physicochemical quality, antioxidant capacity, and microbiological status. Weight loss increased in all treatments but was significantly minimized (<i>p</i> &lt; 0.05) by CMC + PPE (3.0%), reaching 4.40% at day 10 versus 11.01% in PPE-only (1.5% (w/v)) fruit (≈ 60.0% lower). Decay was delayed by the composite coating, with the lowest incidence at day 10 for CMC + PPE (3.0%) (28.7%). DPPH radical scavenging activity peaked around day 5 and remained higher in coated samples; CMC + PPE (3.0%) retained 75.32% activity at day 10. Microbial spoilage was reduced, and CMC + PPE (3.0%) showed the lowest mold and yeast count (3.52 Log CFU/g). Overall, embedding PPE in a CMC matrix provides a biodegradable approach to extend strawberry shelf life during cold storage.</p>

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Comparative effects of pomegranate peel extract dipping and CMC coating on postharvest shelf-life and quality of strawberries

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月28日

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  • Amal Mohamoud Ali,
  • Souzan Saad Latif,
  • Waleed Mohamed Abdel-Aleem,
  • Mohamed Naguib Kenawi

摘要

Bioactive compounds in pomegranate peels are promising natural preservatives, and edible biopolymer coatings can reduce postharvest losses in highly perishable fruits. Here, we compared aqueous pomegranate peel extract (PPE) dipping (1.5, 2.0, 2.5, and 3.0% w/v) with a composite coating of 1.0% (w/v) carboxymethyl cellulose (CMC) enriched with PPE at the same concentrations for strawberry preservation. Strawberries were stored at 4 ± 1 °C for 10 days and evaluated for physicochemical quality, antioxidant capacity, and microbiological status. Weight loss increased in all treatments but was significantly minimized (p < 0.05) by CMC + PPE (3.0%), reaching 4.40% at day 10 versus 11.01% in PPE-only (1.5% (w/v)) fruit (≈ 60.0% lower). Decay was delayed by the composite coating, with the lowest incidence at day 10 for CMC + PPE (3.0%) (28.7%). DPPH radical scavenging activity peaked around day 5 and remained higher in coated samples; CMC + PPE (3.0%) retained 75.32% activity at day 10. Microbial spoilage was reduced, and CMC + PPE (3.0%) showed the lowest mold and yeast count (3.52 Log CFU/g). Overall, embedding PPE in a CMC matrix provides a biodegradable approach to extend strawberry shelf life during cold storage.