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Growth of Pseudomonas Fluorescens in Modified Atmosphere Packaged Tofu.
MedLine Citation:
PMID:  22176299     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Aims:  The objective was to study growth of Pseudomonas in a food product (tofu) where it typically occurs as a spoilage organism, and when this product is stored under modified atmosphere. Methods and Results:  A Pseudomonas strain was isolated from the endogenous microflora of tofu. Tofu was inoculated with the strain, packaged in different gas conditions (air, 100% N(2) , 30% CO(2) /70% N(2) or 100% CO(2) ) and stored under refrigerated conditions. Microbial loads and the headspace gas composition were monitored during storage. Conclusions:  The strain was capable of growing in atmospheres containing no or limited amounts of oxygen and increased amounts of carbon dioxide. Even when 100% CO(2) was used, growth could not be inhibited completely. Significance and Impact of Study:  In contrast to the general characteristics of the genus Pseudomonas (strictly aerobic, highly sensitive to CO(2) ), it should not be expected in the food industry that removing oxygen from the food package and increasing the carbon dioxide content, combined with cold storage, will easily avoid spoilage by Pseudomonas species. Guarantee of hygienic standards and combination of strategies with other microbial growth inhibiting measures should be implemented. © 2011 Kempen University College Letters in Applied Microbiology© 2011 The Society for Applied Microbiology.
Authors:
Jesse Stoops; Peggy Maes; Johan Claes; Leen Van Campenhout
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-16
Journal Detail:
Title:  Letters in applied microbiology     Volume:  -     ISSN:  1472-765X     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8510094     Medline TA:  Lett Appl Microbiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 The Authors Letters in Applied Microbiology © 2011 The Society for Applied Microbiology.
Affiliation:
Lab4Food, Biosciences and Technology Department, K.H.Kempen University College, Kleinhoefstraat 4, 2440 Geel, Belgium, and Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems, Katholieke Universiteit Leuven, Kasteelpark Arenberg 22, 3001 Leuven, Belgium.
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