Spread of a Green Fluorescent Protein-Tagged Pseudomonas putida in a Water Pipe following Airborne Contamination

Authors: Gagnière, Séverine1; Auvray, Frédéric1; Carpentier, Brigitte1

Source: Journal of Food Protection®, Volume 69, Number 11, November 2006 , pp. 2692-2696(5)

Publisher: International Association for Food Protection

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Abstract:

An aerosol of green fluorescent protein-tagged Pseudomonas putida, created during high-pressure water cleaning of a coupon colonized by a biofilm of the green fluorescent protein bacterium, contaminated the water supply of an experimental setup. The upward spread of P. putida in a vertical pipe of supply water was 4.3 cm/day. Results highlight that a water supply to a food plant can be contaminated by an aerosol of environmental flora, created in typical cleaning operations, and become a reoccurring source of contamination. A practical response that could be taken in a food plant is briefly discussed.

Document Type: Research article

Affiliations: 1: Agence Française de Sécurité Sanitaire des Aliments, Laboratoire d'Études et de Recherches sur la Qualité des Aliments et des Procédés Alimentaires, 23 Avenue du Général de Gaulle, Boîte Postale 332, F-94706 Maisons Alfort Cedex, France

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