Document Detail

Activity of Brassica oleracea leaf juice on foodborne pathogenic bacteria.
MedLine Citation:
PMID:  16995537     Owner:  NLM     Status:  MEDLINE    
Many vegetables of the Cruciferae family have been found to possess antimicrobial properties against several microorganisms of clinical importance. In this study, we reported the antibacterial effect of Brassica oleracea juice on several food-borne pathogens. The juice was found to be effective in inhibiting the growth of Salmonella Enteritidis, verotoxigenic Escherichia coli O157:H7, E. coli HB producing thermolabile toxin, nontoxigenic E. coli, and Listeria monocytogenes, but not Enterococcus faecalis. All cauliflower cultivars tested suppressed bacterial growth in a dose-dependent manner after 5 h of treatments, and the reduction in the number of viable cells ranged from 1 log with a 10% juice concentration to more than 3 log with a 20% juice concentration. The foodborne bacteria tested were also markedly reduced by isothiocyanates, natural components abundant in the genus Brassica, indicating that glucosinolate-derived isothiocyanates can play a major role in the antimicrobial activity of cauliflower. The antimicrobial effect of juice was reduced in presence of cysteine, suggesting that one mechanism of action of the juice involves blocking bacterial sulfhydryl groups.
Giorgio Brandi; Giulia Amagliani; Giuditta F Schiavano; Mauro De Santi; Maurizio Sisti
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of food protection     Volume:  69     ISSN:  0362-028X     ISO Abbreviation:  J. Food Prot.     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-09-25     Completed Date:  2006-10-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7703944     Medline TA:  J Food Prot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2274-9     Citation Subset:  IM    
Istituto di Scienze Tossicologiche Igienistiche e Ambientali, Università degli Studi di Urbino Carlo Bo, Urbino, Italy.
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MeSH Terms
Brassica / chemistry*
Colony Count, Microbial
Dose-Response Relationship, Drug
Escherichia coli / drug effects,  growth & development
Food Microbiology*
Food Preservation / methods*
Listeria monocytogenes / drug effects,  growth & development
Plant Extracts / pharmacology*
Plant Leaves / chemistry
Salmonella enteritidis / drug effects,  growth & development
Reg. No./Substance:
0/Plant Extracts

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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