| Antimicrobial effects of corn zein films impregnated with nisin, lauric acid, and EDTA. | |
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MedLine Citation:
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PMID: 11403145 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Bacterial growth during food transport and storage is a problem that may be addressed with packaging materials that release antimicrobials during food contact. In a series of five experiments, EDTA, lauric acid (LA), nisin, and combinations of the three antimicrobial agents were incorporated into a corn zein film and exposed to broth cultures of Listeria monocytogenes and Salmonella Enteritidis for 48 h (sampled at 2, 4, 8, 12, 24, and 48 h). Four experiments used starting cultures of 10(8) CFU/ml in separate experiments tested against each bacterium; the fifth experiment examined the inhibitory effect of selected antimicrobial agents on Salmonella Enteritidis with an initial inoculum of 10(4) CFU/ml. L. monocytogenes cell numbers decreased by greater than 4 logs after 48 h of exposure to films containing LA and nisin alone. No cells were detected for L. monocytogenes (8-log reduction) after 24-h exposure to any film combination that included LA. Of all film agent combinations tested, none had greater than a 1-log reduction of Salmonella Enteritidis when a 10(8)-CFU/ml broth culture was used. When a 10(4) CFU/ml of Salmonella Enteritidis initial inoculum was used, the films with EDTA and LA and EDTA, LA, and nisin were bacteriostatic. However, there was a 5-log increase in cells exposed to control within 24 h. The results demonstrate bacteriocidal and bacteriostatic activity of films containing antimicrobial agents. |
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Authors:
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K L Hoffman; I Y Han; P L Dawson |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of food protection Volume: 64 ISSN: 0362-028X ISO Abbreviation: J. Food Prot. Publication Date: 2001 Jun |
Date Detail:
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Created Date: 2001-06-13 Completed Date: 2001-10-25 Revised Date: 2005-11-17 |
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: 885-9 Citation Subset: IM |
Affiliation:
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Department of Food Science and Human Nutrition, Clemson University, South Carolina 29634-0371, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Anti-Bacterial Agents
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pharmacology* Biofilms* Colony Count, Microbial Drug Combinations Drug Synergism Edetic Acid / pharmacology Food Additives Lauric Acids / pharmacology Listeria monocytogenes / drug effects*, growth & development Nisin / pharmacology Salmonella enteritidis / drug effects*, growth & development Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Anti-Bacterial Agents; 0/Drug Combinations; 0/Food Additives; 0/Lauric Acids; 1414-45-5/Nisin; 143-07-7/lauric acid; 60-00-4/Edetic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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