| Inhibition of Listeria innocua in hummus by a combination of nisin and citric acid. | |
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MedLine Citation:
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PMID: 16786852 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The effect of nisin or citric acid or combinations of these two inhibitors on the inactivation of a cocktail of three Listeria innocua strains was investigated in a model brain heart infusion (BHI) broth and hummus (chickpea dip). In BHI broth, citric acid had a limited ability to inhibit L. innocua growth. Nisin initially reduced L. innocua concentrations by about 3 log cycles; however, L. innocua reached concentrations similar to those of the control after 5 days at 22 degrees C. In combination, the effects of 500 IU/ml nisin and 0.2% citric acid were synergistic and resulted in complete elimination of L. innocua in the BHI broth. The inhibition of L. innocua by nisin (500 or 1,000 IU/g), citric acid (0.1, 0.2, or 0.3%), or their combinations also was evaluated in hummus. Citric acid alone did not affect L. innocua growth or the aerobic bacterial plate count. A combination of 1,000 IU/g nisin and 0.3% citric acid was somewhat effective (approximately 1.5-log reduction) in controlling the concentration of L. innocua and the aerobic plate count for up to 6 days. This combination also may be useful, in addition to proper hygienic practices, for minimizing the growth of the pathogen Listeria monocytogenes in hummus. |
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Authors:
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M Al-Holy; H Al-Qadiri; M Lin; B Rasco |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Journal of food protection Volume: 69 ISSN: 0362-028X ISO Abbreviation: J. Food Prot. Publication Date: 2006 Jun |
Date Detail:
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Created Date: 2006-06-21 Completed Date: 2006-07-24 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7703944 Medline TA: J Food Prot Country: United States |
Other Details:
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Languages: eng Pagination: 1322-7 Citation Subset: IM |
Affiliation:
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Department of Clinical Nutrition and Dietetics, Faculty of Allied Health Sciences, Hashemite University, Zarqa, Jordan. murad@hu.edu.jo |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Anti-Bacterial Agents
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pharmacology* Cicer / microbiology* Citric Acid / pharmacology* Colony Count, Microbial Consumer Product Safety Dose-Response Relationship, Drug Drug Combinations Drug Synergism Food Microbiology Food Preservation / methods* Listeria / drug effects*, growth & development Nisin / pharmacology* Temperature Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Anti-Bacterial Agents; 0/Drug Combinations; 1414-45-5/Nisin; 77-92-9/Citric Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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