Raw cow’s milk relatively inhibits quorum sensing activity of Cromobacterium violaceum in comparison to raw she-camel’s milk

Journal Title: Open Veterinary Journal - Year 2011, Vol 1, Issue 10

Abstract

Milk from different animal species has variable levels of antimicrobial factors against some of spoilage bacteria. For example, they are significantly present in higher concentration in she-camel’s milk than in cattle or buffalo and they are more heat-resistant than their counterparts in cattle and buffalo. Spoilage bacteria are known to communicate with each other by release of signaling molecules, a phenomenon described as quorum sensing (QS). Some food matrices inhibit these signaling compounds. In this study we screened QS inhibitory activities in raw milk of cattle and camel. Ten samples each of fresh raw cow’s milk and she-camel’s milk from apparently healthy animals were screened using the bacterial model Cromobacterium violaceum. The tested cow’s raw milk samples were able to inhibit the production of QS signalling molecules acyl-homoserine lactones (AHLs) produced by C. violaceum. However, she-camel’s milk samples were less effective in inhibiting such AHLs. Thus, one of the factors which influence the inhibitory activity could be derived from variation in milk chemical composition, especially in the percentage of fat which is significantly higher in tested cow’s milk samples (2.22±0.12) than in tested she-camel’s milk samples (1.44±0.35). Natural inhibition of QS signaling by cow’s milk may offer a unique means to control foodborne pathogens and reduce microbial spoilage.

Authors and Affiliations

S. K. Abolghait| Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Suez Canal University, 41522 Ismailia, Egypt, Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Tripoli University, 13662 Tripoli, Libya, A. M. Garbaj| Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Tripoli University, 13662 Tripoli, Libya, A. A. Moawad| Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Tripoli University, 13662 Tripoli, Libya, Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University,12211 Giza, Egypt

Keywords

Related Articles

Levels of heavy metals in liver and kidney of dogs from urban environment

Lead, cadmium and mercury were detected in liver and kidney tissue of dogs from an urban habitat. Samples were digested in a microwave system and analyzed by atomic absorption spectroscopy. Results of the current study...

Information prescriptions: A tool for veterinary practices

The Internet has become a major source of health information and has the potential to offer many benefits for both human and animal health. In order for impact to be positive, however, it is critical that users be able...

Ovine rotaviruses

Rotavirus has been recognized as a predominant cause of acute diarrhea in young animals and humans. Rotavirus has segmented genome composed of 11 segments of double stranded RNA. The virus has a triple layered protein...

Antimicrobial susceptibility and minimal inhibitory concentration of Pseudomonas aeruginosa isolated from septic ocular surface disease in different animal species

The purpose of this study was to evaluate the antibiotic susceptibility profile of Pseudomonas aeruginosa isolated from different animal species with septic ocular surface disease. Sixteen strains of P. aeruginosa were...

Reactivity of commercially available monoclonal antibodies to human CD antigens with peripheral blood leucocytes of dromedary camels (Camelus dromedarius)

Monoclonal antibodies (mAbs) to cell surface molecules have been proven as a key tool for phenotypic and functional characterization of the cellular immune response. One of the major difficulties in studying camel cellu...

Download PDF file
  • EP ID EP9248
  • DOI -
  • Views 652
  • Downloads 88

How To Cite

S. K. Abolghait, A. M. Garbaj, A. A. Moawad (2011). Raw cow’s milk relatively inhibits quorum sensing activity of Cromobacterium violaceum in comparison to raw she-camel’s milk. Open Veterinary Journal, 1(10), 35-38. https://europub.co.uk/articles/-A-9248