ArticleFoods (Basel, Switzerland)2026
Preliminary Screening of Mineral-Based Active Packaging Films for Banana Postharvest Quality: Origin-Dependent Efficacy and Superiority of Tourmaline-Based Formulations.
Article in Foods (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Six active packaging films were prepared by melt-compounding Ti/boehmite, Zn/zeolite, and tourmaline into low-density polyethylene via masterbatch (15 wt% loading). Postharvest quality of Ecuador-, Jeju-, and Mexico-origin bananas was evaluated under sealed and perforated conditions using browning index, pulp-to-peel (P/P) ratio, and Δ°Brix. Despite high filler content, films retained adequate mechanical integrity (tensile strength 27.7 MPa; elongation 244%). Under sealed storage, zeolite-blended formulations consistently showed the lowest browning: Tour+ZL recorded 3.48% (Ecuador, day 13) and 2.99% (Jeju, day 15); T/BM+ZL recorded 5.12% and 5.22%, respectively. The single-component T/BM film showed browning comparable to or exceeding the control. Tour+ZL also maintained the lowest terminal P/P ratio for Jeju bananas (28.99%) with no decrease throughout storage, indicating superior peel moisture retention. For Mexico-origin bananas, all films failed to retard browning after day 8 regardless of composition, demonstrating that packaging efficacy is strongly origin-dependent and must be matched to commodity postharvest history rather than applied universally. Perforated packaging extended the monitorable shelf life by 6-8 days but diminished inter-film differences. Tour+ZL was identified as the lead candidate for controlled validation trials, and a cross-validated framework combining browning index with P/P ratio is proposed to detect overripening.
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