Title
Occurrence of Arcobacter spp. in Brazilian Minas frescal cheese and raw cow milk and its association with microbiological and physicochemical parameters
Date Issued
01 March 2020
Access level
open access
Resource Type
journal article
Author(s)
Barancelli G.
Dini Andreote A.
Vidal-Veuthey B.
Collado L.
Contreras-Castillo C.
Universidade de São Paulo
Universidade de São Paulo
Publisher(s)
Elsevier Ltd
Abstract
Some Arcobacter species are considered emerging food-borne pathogens. However, their prevalence in dairy products is not well known. Therefore, the aim of the current research is to know the occurrence of Arcobacter species in Minas frescal cheese and raw cow milk and its potential association with physicochemical and microbiological parameters. Two hundred and one food samples (cheese, n = 98 and milk, n = 103) collected between 2016 and 2017 in São Paulo State, Brazil, were analyzed. Arcobacter was isolated using an enrichment broth with further filtration over Arcobacter agar. Colonies were characterized by ERIC-PCR, m-PCR and PCR-RFLP and, when was necessary, sequencing of 16S rRNA and rpoB genes were also assessed. Additionally, cheese samples were evaluated in relation to total coliform (TC), thermotolerant coliforms (TtC), coagulase positive staphylococci (CoPS) count and moisture. Raw milk samples were assessed for aerobic mesophilic bacteria count, TC, TtC, Dornic acidity, proteins, fats, lactose, defatted dry extract, total solids and somatic cell counts. The occurrence of Arcobacter was 10.2% (10/98) and 16.5% (17/103) in cheese and milk samples, respectively. All isolates were identified as Arcobacter butzleri. On the other hand, Multiple Factorial Analysis showed correlation between the presence of this species and the cheese moisture, while this pathogen was correlated with high counts of mesophilic microorganisms and TC in raw milk. No other evaluated parameter in cheese (TC, CoPS) and milk (TtC, Dornic acidity, proteins, fats, lactose, defatted dry extract, total solids and somatic cell counts) showed significant correlation. To date, this is the first report on A. butzleri in Minas frescal cheese, therefore its presence in dairy products could be considered a potential public health concern.
Volume
109
Language
English
OCDE Knowledge area
Biología celular, Microbiología
Nutrición, Dietética
Subjects
Scopus EID
2-s2.0-85072598362
Source
Food Control
ISSN of the container
09567135
Sources of information:
Directorio de Producción Científica
Scopus