Document Detail


Comparative analysis of two antifungal Lactobacillus plantarum isolates and their application as bio-protectants in refrigerated foods.
MedLine Citation:
PMID:  22978783     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIMS: To compare the technological robustness of two antifungal Lactobacillus plantarum isolates and to assess their ability to inhibit growth of the spoilage yeast Rhodotorula mucilaginosa in two different refrigerated foods. METHODS AND RESULTS: The effects of freeze drying, thermal treatments and varying salt concentrations on the viability of two antifungal lactic acid bacteria (LAB) were examined. Antifungal compound(s) contained in the supernatant of both isolates were compared to commercially available food preservatives. Both isolates were used as dairy starter adjuncts in yoghurt and inoculants in orange juice to determine the anti-yeast activity towards R. mucilaginosa. Yeast growth was retarded by the tested isolates in both food settings with one of the isolates, Lb. plantarum 16, being the most potent inhibitor. CONCLUSION: Both lactobacilli exhibited considerable robustness to withstand processing treatments commonly encountered in a food industrial setting. The isolates were shown to possess potent antifungal activity in both in vivo and in vitro food models. SIGNIFICANCE AND IMPACT OF STUDY: The studied antifungal lactobacilli may represent safer and consumer-friendly alternatives to the use of chemical preservatives. This is the first report of antifungal Lb. plantarum exerting protective potential in yoghurt and orange juice. © 2012 The Authors Journal of Applied Microbiology © 2012 The Society for Applied Microbiology.
Authors:
Sarah Crowley; Jennifer Mahony; Douwe van Sinderen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-14
Journal Detail:
Title:  Journal of applied microbiology     Volume:  -     ISSN:  1365-2672     ISO Abbreviation:  J. Appl. Microbiol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706280     Medline TA:  J Appl Microbiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Authors Journal of Applied Microbiology © 2012 The Society for Applied Microbiology.
Affiliation:
Department of Microbiology, University College Cork, Cork, Ireland.
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