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Effects of Different Edible Coatings on the Shelf Life of Fresh Black Mulberry Fruits (Morus nigra L.)

The aim of this study was to evaluate the effects of edible coatings based on gelatine, oils (sunflower and coconut) and beeswax on the physicochemical properties, bioactive compounds (total phenols and monomeric anthocyanin content), antioxidant capacity (DPPH and FRAP assays were used) and sensori...

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Published in:Agriculture (Basel) 2022-07, Vol.12 (7), p.1068
Main Authors: Memete, Adriana Ramona, Teusdea, Alin Cristian, Timar, Adrian Vasile, Vuscan, Adrian Nicolae, Mintaș, Olimpia Smaranda, Cavalu, Simona, Vicas, Simona Ioana
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creator Memete, Adriana Ramona
Teusdea, Alin Cristian
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description The aim of this study was to evaluate the effects of edible coatings based on gelatine, oils (sunflower and coconut) and beeswax on the physicochemical properties, bioactive compounds (total phenols and monomeric anthocyanin content), antioxidant capacity (DPPH and FRAP assays were used) and sensorial attributes of mulberry fruits during a period of storage (0, 2, 5 and 8 days) at 4 °C. The results showed that, in all samples treated with edible films, the degree of firmness was higher and the deterioration weaker compared to the control at day 8 of storage. Edible coatings significantly reduced the rate of deterioration, in terms of total phenolics and anthocyanins, in mulberry fruits over time, and the gelatine-coated mulberry samples (G_Mn) exhibited the best results. In terms of the antioxidant capacity of the coated mulberry, after 5 and 8 days of storage, only the G_Mn samples maintained significantly high DPPH radical scavenging and FRAP values compared to control. Coating improved the sensorial attributes of the mulberry during storage, and gelatine-coated fruits recorded the highest score, followed by layer-by-layer samples (O+W_G_Mn). All edible coatings used to cover black mulberry in this study extended the shelf life of the fruits, while maintaining high levels of bioactive compounds and, consequently, high antioxidant capacity, along with improved sensory qualities, during cold storage.
doi_str_mv 10.3390/agriculture12071068
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ispartof Agriculture (Basel), 2022-07, Vol.12 (7), p.1068
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subjects Anthocyanins
Antimicrobial agents
Antioxidants
Beeswax
Bioactive compounds
Biological activity
Coatings
coconut oil
Cold storage
Consumers
Deterioration
Food
Fruits
gelatine
Moisture content
Morus nigra
mulberry
Phenols
Physicochemical properties
Scavenging
Seeds
Shelf life
Spectrum analysis
sunflower oil
total phenols
title Effects of Different Edible Coatings on the Shelf Life of Fresh Black Mulberry Fruits (Morus nigra L.)
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