Investigation of Carriers of <i>Salmonella</i> and Other Hydrogen Sulphide-Positive Bacteria in the Digestive Content of Fish from the Atlantic Area of Macaronesia: A Comparative Study of Identification by API Gallery and MALDI-TOF MS

<i>Salmonella</i> spp. are known pathogens in fish, with their presence potentially resulting from the contamination of the aquatic environment or improper handling. Accurate bacterial identification is crucial across various fields, including medicine, microbiology, and the food industr...

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Main Authors: Inmaculada Rosario Medina, Marco Antonio Suárez Benítez, María del Mar Ojeda-Vargas, Kiara Gallo, Daniel Padilla Castillo, Miguel Batista-Arteaga, Soraya Déniz Suárez, Esther Licia Díaz Rodríguez, Begoña Acosta-Hernández
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Language:English
Published: MDPI AG 2024-11-01
Series:Animals
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Online Access:https://www.mdpi.com/2076-2615/14/22/3247
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author Inmaculada Rosario Medina
Marco Antonio Suárez Benítez
María del Mar Ojeda-Vargas
Kiara Gallo
Daniel Padilla Castillo
Miguel Batista-Arteaga
Soraya Déniz Suárez
Esther Licia Díaz Rodríguez
Begoña Acosta-Hernández
author_facet Inmaculada Rosario Medina
Marco Antonio Suárez Benítez
María del Mar Ojeda-Vargas
Kiara Gallo
Daniel Padilla Castillo
Miguel Batista-Arteaga
Soraya Déniz Suárez
Esther Licia Díaz Rodríguez
Begoña Acosta-Hernández
author_sort Inmaculada Rosario Medina
collection DOAJ
description <i>Salmonella</i> spp. are known pathogens in fish, with their presence potentially resulting from the contamination of the aquatic environment or improper handling. Accurate bacterial identification is crucial across various fields, including medicine, microbiology, and the food industry, and thus a range of techniques are available for this purpose. In this study, <i>Salmonella</i> spp. and other hydrogen sulphide-positive bacteria were investigated in the digestive contents of fish destined for consumption from the Atlantic area of Macaronesia. Two identification techniques were compared: the traditional API method and the MALDI-TOF MS technique. For the identification of <i>Salmonella</i> spp. carriers, 59 samples were processed following ISO 6579–1:2017. A total of 47 strains of Gram-negative bacilli were obtained. No <i>Salmonella</i> spp. isolates were detected. The most frequent genus was <i>Enterobacter</i> (76.50%), followed by <i>Shewanella</i> (10.63%). The MALDI-TOF MS technique showed a high concordance with the API technique, with 72.34% concordance at the species level. Both techniques demonstrated a high degree of concordance in the identification of <i>Enterobacter cloacae</i>, with 87.23% genus-level concordance and 12.76% non-concordant identifications. This study highlights the limitations of the API technique and the speed and precision of MALDI-TOF MS. The identified bacteria could pose a health risk to humans.
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spelling doaj-art-ef8e4143129b4aacaf9ccc405c46f0992024-11-26T17:45:55ZengMDPI AGAnimals2076-26152024-11-011422324710.3390/ani14223247Investigation of Carriers of <i>Salmonella</i> and Other Hydrogen Sulphide-Positive Bacteria in the Digestive Content of Fish from the Atlantic Area of Macaronesia: A Comparative Study of Identification by API Gallery and MALDI-TOF MSInmaculada Rosario Medina0Marco Antonio Suárez Benítez1María del Mar Ojeda-Vargas2Kiara Gallo3Daniel Padilla Castillo4Miguel Batista-Arteaga5Soraya Déniz Suárez6Esther Licia Díaz Rodríguez7Begoña Acosta-Hernández8Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, SpainDepartamento de Patología Animal, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, SpainServicio de Microbiología, Complejo Hospitalario Universitario Insular Materno Infantil de Las Palmas de Gran Canaria, 35016 Las Palmas, SpainDepartamento de Patología Animal, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, SpainDepartamento de Patología Animal, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, SpainDepartamento de Patología Animal, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, SpainDepartamento de Patología Animal, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, SpainDepartamento de Patología Animal, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, SpainDepartamento de Patología Animal, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, 35413 Arucas, Spain<i>Salmonella</i> spp. are known pathogens in fish, with their presence potentially resulting from the contamination of the aquatic environment or improper handling. Accurate bacterial identification is crucial across various fields, including medicine, microbiology, and the food industry, and thus a range of techniques are available for this purpose. In this study, <i>Salmonella</i> spp. and other hydrogen sulphide-positive bacteria were investigated in the digestive contents of fish destined for consumption from the Atlantic area of Macaronesia. Two identification techniques were compared: the traditional API method and the MALDI-TOF MS technique. For the identification of <i>Salmonella</i> spp. carriers, 59 samples were processed following ISO 6579–1:2017. A total of 47 strains of Gram-negative bacilli were obtained. No <i>Salmonella</i> spp. isolates were detected. The most frequent genus was <i>Enterobacter</i> (76.50%), followed by <i>Shewanella</i> (10.63%). The MALDI-TOF MS technique showed a high concordance with the API technique, with 72.34% concordance at the species level. Both techniques demonstrated a high degree of concordance in the identification of <i>Enterobacter cloacae</i>, with 87.23% genus-level concordance and 12.76% non-concordant identifications. This study highlights the limitations of the API technique and the speed and precision of MALDI-TOF MS. The identified bacteria could pose a health risk to humans.https://www.mdpi.com/2076-2615/14/22/3247fish carrierspathogenic microorganismssalmonellosis<i>Enterobacter</i><i>Shewanella</i><i>Vibrio</i>
spellingShingle Inmaculada Rosario Medina
Marco Antonio Suárez Benítez
María del Mar Ojeda-Vargas
Kiara Gallo
Daniel Padilla Castillo
Miguel Batista-Arteaga
Soraya Déniz Suárez
Esther Licia Díaz Rodríguez
Begoña Acosta-Hernández
Investigation of Carriers of <i>Salmonella</i> and Other Hydrogen Sulphide-Positive Bacteria in the Digestive Content of Fish from the Atlantic Area of Macaronesia: A Comparative Study of Identification by API Gallery and MALDI-TOF MS
Animals
fish carriers
pathogenic microorganisms
salmonellosis
<i>Enterobacter</i>
<i>Shewanella</i>
<i>Vibrio</i>
title Investigation of Carriers of <i>Salmonella</i> and Other Hydrogen Sulphide-Positive Bacteria in the Digestive Content of Fish from the Atlantic Area of Macaronesia: A Comparative Study of Identification by API Gallery and MALDI-TOF MS
title_full Investigation of Carriers of <i>Salmonella</i> and Other Hydrogen Sulphide-Positive Bacteria in the Digestive Content of Fish from the Atlantic Area of Macaronesia: A Comparative Study of Identification by API Gallery and MALDI-TOF MS
title_fullStr Investigation of Carriers of <i>Salmonella</i> and Other Hydrogen Sulphide-Positive Bacteria in the Digestive Content of Fish from the Atlantic Area of Macaronesia: A Comparative Study of Identification by API Gallery and MALDI-TOF MS
title_full_unstemmed Investigation of Carriers of <i>Salmonella</i> and Other Hydrogen Sulphide-Positive Bacteria in the Digestive Content of Fish from the Atlantic Area of Macaronesia: A Comparative Study of Identification by API Gallery and MALDI-TOF MS
title_short Investigation of Carriers of <i>Salmonella</i> and Other Hydrogen Sulphide-Positive Bacteria in the Digestive Content of Fish from the Atlantic Area of Macaronesia: A Comparative Study of Identification by API Gallery and MALDI-TOF MS
title_sort investigation of carriers of i salmonella i and other hydrogen sulphide positive bacteria in the digestive content of fish from the atlantic area of macaronesia a comparative study of identification by api gallery and maldi tof ms
topic fish carriers
pathogenic microorganisms
salmonellosis
<i>Enterobacter</i>
<i>Shewanella</i>
<i>Vibrio</i>
url https://www.mdpi.com/2076-2615/14/22/3247
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