Dynamics of bacterial and fungal communities of mango: From the tree to ready-to-Eat products

Taibi Ahmed, Diop Alioune, Leneveu-Jenvrin Charlène, Broussolle Véronique, Lortal Sylvie, Méot Jean-Michel, Soria Christian, Chillet Marc, Lechaudel Mathieu, Minier Jérôme, Constancias Florentin, Remize Fabienne, Meile Jean-Christophe. 2022. Dynamics of bacterial and fungal communities of mango: From the tree to ready-to-Eat products. Food Microbiology, 108:104095, 14 p.

Résumé : Processing, such as fresh cutting and drying, is essential to enhance profitability; therefore, to limit waste and reduce losses in fruit production such as mangoes. Metabarcoding and microbial enumeration methods were utilized to explore the structure of mango microbiota, as well as their evolution after processing. Two mango ripening stages of cv. Cogshall were selected and processed into fresh-cut pieces or dried slices. Microbiological and physicochemical parameters were monitored during product storage, in order to assess the dynamics of quantitative and qualitative variations of the microbial flora. Proteobacteria was the dominant bacterial phylum of the mango surface and accounted for 73.16%, followed by Actinobacteria (10.16%), Bacteroidetes (7.82%) and Firmicutes (6.68%). Aureobasidium and Cladosporium were the only two genera shared between all types of samples (peel surface, dried slices and mango fresh-cut). However, the bacterial genera Lactobacillus and Pantoea were the most abundant in fresh-cut mango after 14 days of storage. Ascomycota was the dominant fungal phylum in the mango surface and accounted for 90.76% of the total number of detected sequences, followed by Basidiomycota (9.21%). In total, 866 microbial genera were associated with mango surface (562 bacterial and 304 fungal). Among detected yeast genera, Saccharomyces, Candida and Malassezia prevailed in mango flesh and were replaced by Wickerhamomyces after 14 days of storage. Alpha and beta diversity analyzes revealed differences in fungal and bacterial communities on fruit peel, in fresh-cut, dried slices, and during conservation (fresh-cut and dried slices). Mango processing (washing, peeling, cutting and drying) reduced the richness and the microbial diversity (bacterial and fungal) associated to the fruit, and drying limits the development of cultivable microorganisms during storage in comparison to fresh-cuts mangoes.

Mots-clés Agrovoc : Mangifera indica, flore microbienne, flore bactérienne, flore, mangue, aptitude à la conservation, séchage, microbiologie, qualité des aliments, mûrissage

Mots-clés géographiques Agrovoc : France, La Réunion

Mots-clés libres : Fresh-cut mango, Dried mango slices, Microbiota, Storage

Champ stratégique Cirad : CTS 3 (2019-) - Systèmes alimentaires

Auteurs et affiliations

• Taibi Ahmed, Université de Montpellier (FRA) - auteur correspondant
• Diop Alioune, Université de Montpellier (FRA)
• Leneveu-Jenvrin Charlène, Université de la Réunion (REU)
• Broussolle Véronique, INRAE (FRA)
• Lortal Sylvie, INRAE (FRA)
• Méot Jean-Michel, CIRAD-PERSYST-UMR Qualisud (FRA)
• Soria Christian, CIRAD-PERSYST-UMR Qualisud (REU) ORCID: 0000-0002-7235-7872
• Chillet Marc, CIRAD-PERSYST-UMR Qualisud (REU)
• Lechaudel Mathieu, CIRAD-PERSYST-UMR Qualisud (GLP) ORCID: 0000-0002-1108-8357
• Minier Jérôme, CIRAD-PERSYST-UMR Qualisud (REU) ORCID: 0000-0002-5993-4663
• Constancias Florentin, Université de Montpellier (FRA)
• Remize Fabienne, Université de la Réunion (REU)
• Meile Jean-Christophe, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0002-6747-2104 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/601618/)

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