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Quorum sensing inhibitory and antimicrobial activities of honeys and the relationship with individual phenolics

Authors :
Francisco A. Tomás-Barberán
María I. Gil
Pilar Truchado
Ana Allende
Francisco López-Gálvez
European Commission
Consejo Superior de Investigaciones Científicas (España)
Fundación Séneca
Source :
Digital.CSIC. Repositorio Institucional del CSIC, instname
Publication Year :
2009
Publisher :
Elsevier, 2009.

Abstract

8 páginas, 3 figuras, 6 tablas.<br />Quorum sensing (QS) inhibitory activity of 29 unifloral honeys was evaluated using the bacterial model Cromobacterium violaceum. The tested honeys were able to inhibit the production of acyl-homoserine lactones (AHLs) produced by C. violaceum at 0.1 g/ml. However, chestnut and linden honey samples showed the highest inhibitory activity, while orange and rosemary were less effective in inhibiting QS. When honey samples from the same floral origin obtained from different geographical regions were compared, they showed similar QS inhibitory activity. Thus, one of the factors which influence the inhibitory activity could be derived from the floral origin, independently of the geographic location. It was observed that unifloral honey samples showed “non-peroxide” anti-QS activity, which was not linearly correlated with total and individual phenolic compounds. The obtained results showed that the preservative properties of honey could be due to both the antimicrobial properties and the QS inhibitory capacity.<br />Support of the EU-Funded Project ‘‘Bees in Europe and Sustainable Honey Production” (‘‘BEE SHOP”, Ref: FOOD 2006-022568- BEESHOP) is gratefully acknowledged. A. Allende and F. López-Gálvez hold grants founded by CSIC (JaeDoc- 2007 and I3P contracts) and P. Truchado holds a PhD grant from the Seneca Fundation (Murcia, Spain).

Details

Database :
OpenAIRE
Journal :
Digital.CSIC. Repositorio Institucional del CSIC, instname
Accession number :
edsair.doi.dedup.....f7917c6a00c7818334243a64a2c4d4d3