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Título: | Fungal biodiversity in commercial table olive packages |
Autor: | Benítez-Cabello, Antonio CSIC ORCID ; Ramiro-García, Javier CSIC ORCID; Romero-Gil, Verónica CSIC ORCID; Medina Pradas, Eduardo CSIC ORCID | Palabras clave: | Biofilms Yeasts Table olives Metataxonomics Packaging |
Fecha de publicación: | 2022 | Editor: | Academic Press Elsevier |
Citación: | Food Microbiology 107: 104082 (2022) | Resumen: | In this work, a total of 72 commercial table olive packages obtained from different international markets were analysed to determine their fungal biodiversity. Viable fungal counts ranged from the detection threshold (<1.6 log CFU/g in 25% of cases) to a maximum of 5.86 log CFU/g. Assignation of fungal taxonomy was carried out through a metataxonomic analysis of the ITS region, which revealed that almost half of the total sequences obtained from all packages corresponded to the Pichia genus (44.08%), followed by Citeromyces (14.45%), Candida (8.07%), and Wickerhamomyces (6.95%). In lower proportions were also detected other genera such as Starmerella (3.60%), Saccharomyces (2.24%), Debaryomyces (2.08%), and Dekkera (2.05%). The statistical analysis allowed to link certain taxa to specific types of elaboration (lye treated, green, and black natural olives), presentation (pitted, whole, or sliced samples), and packaging material/system (glass, PET, plastic bags, and vacuum). Likewise, Zygotorulaspora genus was especially sensitive to the presence of potassium sorbate, while other genera such as Sporobolomyces, Moniliella, and Gibellulopsis were more abundant in packages treated with this preservative. Lastly, potential pathogenic fungal genera such as Alternaria, Kodamaea, Lodderomyces, Malasessia, or Aspergillus were detected in low proportions (<0.3%), although with higher representation in some individual samples. Our results contribute to improving our knowledge of the fungal population associated with this ready-to-eat fermented vegetable, providing us a strong tool to assess the safety, stability, and quality of the final product. | Descripción: | 9 Páginas.-- 5 Figuras.-- 2 Tablas | Versión del editor: | http://dx.doi.org/10.1016/j.fm.2022.104082 | URI: | http://hdl.handle.net/10261/287334 | DOI: | 10.1016/j.fm.2022.104082 | Identificadores: | doi: 10.1016/j.fm.2022.104082 issn: 1095-9998 |
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FoodMicrob_2022_V107_104082.pdf | 4,02 MB | Adobe PDF | Visualizar/Abrir | |
FoodMicrob_2022_V107_104082_MatSupl.xlsx | 56,17 kB | Microsoft Excel XML | Visualizar/Abrir |
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