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Title: Raw donkey milk as a source of Enterococcus diversity: Assessment of their technological properties and safety characteristics
Authors: Aspri, Maria 
Bozoudi, Despina 
Tsaltas, Dimitrios 
Hill, Colin 
Papademas, Photis 
Keywords: Antibiotic resistance;Donkey milk;Enterococci;Probiotics;Virulence
Category: Animal and Dairy Science
Field: Agricultural Sciences
Issue Date: 1-Mar-2017
Publisher: Elsevier Ltd
Source: Food Control, Volume 73, 1 March 2017, Pages 81-90
Journal: Food Control 
Abstract: The diversity, the technological and the safety aspects, and the probiotic potential of enterococci isolated from raw donkey milk were studied, in order to determine their potential to be used as starters/adjuncts cultures in dairy products. Gram-positive, catalase negative bacteria (257) were isolated using selective microbiological media from eleven raw milk samples, collected over seven months from a donkey farm in Cyprus. All isolates were identified by phenotypic and molecular techniques and further tested for their technological and probiotic properties. Furthermore, in order to assess their suitability as starter/adjunct cultures, their susceptibility to antibiotics, the absence of virulence factors, the lack of haemolytic activity, and production of biogenic amines were also investigated. The safety profile of the isolates revealed that their great majority were susceptible to clinically important antibiotics (i.e. vancomycin) and production of biogenic amines (i.e. tyramine) while the presence of some virulence genes occurred in a few isolates. The results obtained in this study showed that Enterococci in raw donkey milk should not pose a risk to human health, while they possess interesting technological characteristics which could be exploited as potential starter/adjunct cultures for food fermentations.
ISSN: 09567135
DOI: 10.1016/j.foodcont.2016.05.022
Rights: © 2016 Elsevier Ltd
Type: Article
Appears in Collections:Άρθρα/Articles

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