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    Pectin/agarose-based coating functionalized with Piper betel L. extract for enhancing storability of postharvest bananas

    Year: 2023

    Journal: Progress in Organic Coatings, Volume 185, 2023-12-01, page 107916

    Authors: Pham, Bao-Tran Tran; Tran, Tien-Dat; Phung, Thanh Khoa; Bach, Long Giang; Nguyen, Dai Van; Nguyen, Thuong Thi

    Keywords: Pectin; Active coating; Agarose; Banana preservation

    The goal of this study is to produce an active coating on Chiquita bananas storage at 20 °C and 64 %RH using a combination of pectin and agarose (PeA) supplemented with Piper betel L. leaf extract (PBE) to extend their shelf life. The introduction of 30 wt% PBE into the PeA film improved the tensile strength, flexibility, UV resistance as well as antioxidant and antibacterial properties of resulting films. The coating solutions, containing PeA functionalized with PBE, were applied for prolonging the shelf life of postharvest bananas using the dipping method. Scanning electron microscope (SEM) analyses showed that PeA coating solution enriched with 30 wt% PBE (PeA-PBE-30) coating effectively sealed and uniformly dispersed on the fruit skin. Besides, PeA-PBE-30 coating can significantly reduce the respiration rate of fresh bananas during 8 d storage period. Other factors including weight loss, total soluble solids, and pH were also reduced, while the retention of titratable acid also indicated the protective efficacy of PeA-PBE-30 coating compared to uncoated fruits and other treatments. This study provides evidence that pectin/agarose-based coating enriched with PBE can enhance the storability of fresh bananas, making it a promising strategy for commercial use.
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