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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Biofilm formation, pigment production and motility in Pseudomonas spp. isolated from the dairy industry
Food Control, Volume 86, Year 2018
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Description
The aim of this study was to investigate the ability of Pseudomonas spp. strains isolated from milk, dairy products and dairy plants, to produce blue pigment in situ, to form biofilm onto polystyrene surfaces and to perform different types of motility. Molecular identification revealed that, out of 72 Pseudomonas spp. isolates, P. fluorescens was the most common species (50 isolates) followed by P. putida (9), P. koreensis (4), P. brenneri (4), P. aeruginosa (2), P. granadensis (2) and P. veronii (1). The evaluation of blue colour production showed that the pigment was produced at 10 °C but not at 30 °C; in addition this character was strain- and species-dependent, with only 16 P. fluorescens strains showing blue pigment production. Most of the studied strains produced biofilm although with some differences related to the strains and the incubation temperatures. Within the most abundant isolated species (P. fluorescens), about 46%, 34% and 26% of the strains were able to swim, swarm and twitch, respectively. The observed relationship between biofilm formation and blue pigment production in P. fluorescens strains was statistically significant. Since these characteristics may contribute to the persistence of microorganisms in food processing environments and therefore to the contamination of food products, our results may help to focus on the control of the strains involved in the blue discolouration of dairy products. © 2017 Elsevier Ltd
Authors & Co-Authors
Cenci-Goga, Beniamino T.
Italy, Perugia
Università Degli Studi Di Perugia
Lista, Florigio Romano
Italy, Roma
Army Medical and Veterinary Research Center
Fillo, Silvia
Italy, Roma
Army Medical and Veterinary Research Center
Statistics
Citations: 62
Authors: 3
Affiliations: 4
Identifiers
Doi:
10.1016/j.foodcont.2017.11.018
ISSN:
09567135
Research Areas
Food Security