| Preservation of Acidified Cucumbers with a Combination of Fumaric Acid and Cinnamaldehyde That Target Lactic Acid Bacteria and Yeasts. | |
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MedLine Citation:
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PMID: 21824132 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The naturally occurring compound, fumaric acid, was evaluated as a potential preservative for the long-term storage of cucumbers. Fumaric acid inhibited growth of lactic acid bacteria (LAB) in an acidified cucumber juice medium model system resembling conditions that could allow preservation of cucumbers in the presence of sodium benzoate. Forty millimolars of fumaric acid were required to inhibit growth of an extremely aciduric Lactobacillus plantarum LA0445 strain at pH 3.8. Half of this concentration was required to achieve inhibition of L. plantarum LA0445 at pH 3.5. As expected growth of the spoilage yeasts Zygosaccharomyces globiformis and Z. bailii was not inhibited by fumaric acid at near saturation concentrations in the same cucumber juice medium. To usefully apply fumaric acid as a preservative in acidified foods it will be necessary to combine it with a food grade yeast inhibitor. The antimicrobial agent, cinnamaldehyde (3.8 mM) prevented growth of Z. globiformis as well as the yeasts that were present on fresh cucumbers. Acidified cucumbers were successfully preserved, as indicated by lack of yeasts or LAB growth and microbial lactic acid or ethanol production by a combination of fumaric acid and cinnamaldehyde during storage at 30 °C for 2 mo. This combination of 2 naturally occurring preservative compounds may serve as an alternative approach to the use of sodium benzoate, potassium sorbate, or sodium metabisulfite for preservation of acidified vegetables without a thermal process. Practical Application: This study evaluates the potential application of alternative preservatives for the long-term storage of cucumbers in a reduced NaCl cover brine solution and without a thermal process. |
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Authors:
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Ilenys M Pérez-Díaz |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-8 |
Journal Detail:
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Title: Journal of food science Volume: - ISSN: 1750-3841 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-8-9 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0014052 Medline TA: J Food Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2011 Institute of Food Technologists® |
Affiliation:
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Author is with USDA-ARS, SAA Food Science Research Unit, 322 Schaub Hall, Box 7624, North Carolina State Univ., Raleigh, NC 27695-7624, U.S.A. Direct inquiries to author Pérez-Díaz (E-mail: Ilenys.Pérez-Díaz@ars.usda.gov). |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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