Quorum sensing in food-borne bacteria and use of quorum sensing inhibitors as food intervention techniques

Jamuna Bai, A. and Rai, V. Ravishankar (2014) Quorum sensing in food-borne bacteria and use of quorum sensing inhibitors as food intervention techniques. In: Microbial Food Safety and Preservation Techniques. CRC Press. ISBN 9780429168291

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Official URL: https://doi.org/10.1201/b17465


In the last few years, significant progress has been made in understanding the virulence, transmission, survival, stress response, and interactions of food-borne bacteria with other microbiota. However, the knowledge we have about the ecology of food spoilage bacteria and the biochemical mechanisms behind spoilage at the molecular level is considerably less. A number of studies imply that virulence- and spoilage-regulated phenotypes in food-borne bacteria are cell density-dependent phenomenon regulated at the genetic level by the mechanism of quorum sensing. In quorum sensing (QS) or cell-to-cell communication, bacteria produce, detect, and respond to the signaling molecules, also known as autoinducers. Bacteria sense their population density by monitoring the signal molecules in their environment and respond to it by activating or repressing target genes and the expression of certain phenotypes. In this chapter, various quorum sensing systems and signaling molecules used by bacteria are reviewed. The quorum sensing mechanisms employed by food-borne pathogens to express virulence factors and the food spoilage bacteria to carry out spoilage activities in foods are summarized. The antiquorum sensing strategies that can attenuate coordinated activity in bacteria are briefed. The application of quorum sensing inhibitors that are commercially available and those derived from foods and phytochemicals as potential food intervention techniques to increase the safety and quality of foods will be discussed.

Item Type: Book Section
Uncontrolled Keywords: Molecules, Population statistics, Bacteria, Cell-to-cell communication, Cell signaling, Quorum-sensing inhibitors, Food-borne pathogens, Food microbiology, Biochemical mechanisms, Coordinated activity, Food safety, Gene expression, Population densities, Quorum-sensing systems, Signaling molecules, Spoilage
Subjects: B Life Science > Microbiology
Divisions: Department of > Microbiology
Depositing User: Arshiya Kousar Library Assistant
Date Deposited: 15 Jun 2019 11:39
Last Modified: 22 Dec 2020 06:08
URI: http://eprints.uni-mysore.ac.in/id/eprint/3064

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