Document Detail

Combining strains of lactic acid bacteria may reduce their toxin and heavy metal removal efficiency from aqueous solution.
MedLine Citation:
PMID:  18028332     Owner:  NLM     Status:  MEDLINE    
AIMS: The primary objective of this study was to compare the removal of cadmium, lead, aflatoxin B1 and microcystin-LR from aqueous solution by Lactobacillus rhamnosus GG, L. rhamnosus LC705, Propionibacterium freudenreichii shermanii JS and Bifidobacterium breve Bbi99/E8, separately and in combination. METHODS AND RESULTS: The removal of toxins and heavy metals was assessed in batch experiments. The removal of all compounds was observed to be strain specific. The removal of lead by a combination of all the strains used was observed to be lower than could be predicted from the removal by single strains (P < 0.05). A similar trend was also observed with the other compounds studied. CONCLUSIONS: The results show that the toxin-removal capacity of a combination of strains of lactic acid bacteria is not the sum of their individual capacities. Therefore, pure single strains should be used when the goal is to remove single compounds. The use of combinations of strains may be beneficial when several compounds are removed together. This needs to be studied in future experiments. SIGNIFICANCE AND IMPACT OF THE STUDY: Lactic acid bacteria have been identified as potent tools for the decontamination of heavy metals, cyanotoxins and mycotoxins. The results of this study should be considered when selecting combinations of bacteria for the simultaneous removal of several toxic compounds.
T Halttunen; M C Collado; H El-Nezami; J Meriluoto; S Salminen
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-11-19
Journal Detail:
Title:  Letters in applied microbiology     Volume:  46     ISSN:  1472-765X     ISO Abbreviation:  Lett. Appl. Microbiol.     Publication Date:  2008 Feb 
Date Detail:
Created Date:  2008-01-24     Completed Date:  2008-06-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8510094     Medline TA:  Lett Appl Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  160-5     Citation Subset:  IM    
University of Turku, Functional Foods Forum, Turku, Finland.
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MeSH Terms
Bacteria / growth & development*,  metabolism*
Bacterial Toxins / metabolism*
Bifidobacterium / growth & development,  metabolism
Biodegradation, Environmental
Lactobacillus / growth & development,  metabolism
Metals, Heavy / metabolism*
Propionibacterium / growth & development,  metabolism
Water Microbiology
Reg. No./Substance:
0/Bacterial Toxins; 0/Metals, Heavy

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