Effect of small chain N acyl homoserine lactone quorum sensingsignals on biofilms of food-borne pathogens

Jamuna Bai, A. and Ravishankar Rai, V. (2016) Effect of small chain N acyl homoserine lactone quorum sensingsignals on biofilms of food-borne pathogens. Journal of Food Science and Technology, 53 (9). pp. 3609-3614. ISSN 0975-8402

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Official URL: https://doi.org/10.1007/s13197-016-2346-1

Abstract

Quorum sensing or cell to cell communicationwhich includes inter- and intra-cellular communication hasbeen implicated in the production of virulence factor andformation of biofilm in food-borne pathogens. In the pre-sent study, the effect of quorum sensing signals on thebiofilms of food-borne pathogens has been elucidated.N-butryl homoserine lactone and N-hexanoyl homoserinelactone belonging to acyl homoserine lactone (AHL)family of signaling molecules were investigated for theireffect on the biofilm formation (attachment and exopoly-meric substance production) in the food-borne pathogensEscherichia coli,Salmonella entericaserovar Typhimur-ium andVibrio parahemolyticus. The signaling moleculesat a concentration of 1lM were capable of increasingbiofilm formation in all the tested pathogens. There was anincrease in the attachment of the bacterial cells and bio-mass as observed by microtiter plate assay and exopoly-meric substances production in the biofilms in presence ofthe AHLs. Further, it needs to be elucidated if the effect ofAHLS on the biofilms ofE. coliandS. entericaserovarTyphimurium is SdiA dependent.

Item Type: Article
Subjects: B Life Science > Microbiology
Divisions: Department of > Microbiology
Depositing User: manjula User
Date Deposited: 31 May 2019 07:08
Last Modified: 31 May 2019 07:08
URI: http://eprints.uni-mysore.ac.in/id/eprint/745

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