| Inactivation of microorganisms in milk and apple cider treated with ultrasound. | |
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MedLine Citation:
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PMID: 16541685 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Nonthermal technologies are emerging as promising alternatives to heat treatment for food processing. Ultrasound, defined as sound waves with a frequency greater than 20 kHz, has proven bactericidal effects, especially when combined with other microbial-reduction strategies such as mild heating. In this study, ultrasound treatment (sonifier probe at 20 kHz, 100% power level, 150 W acoustic power, 118 W/cm2 acoustic intensity) with or without the effect of mild heat (57 degrees C) was effective at reducing microbial levels in raw milk, Listeria monocytogenes levels inoculated in ultrahigh-temperature milk, and Escherichia coli O157:H7 in apple cider. Continuous flow ultrasound treatment combined with mild heat (57 degrees C) for 18 min resulted in a 5-log reduction of L. monocytogenes in ultrahigh-temperature milk, a 5-log reduction in total aerobic bacteria in raw milk, and a 6-log reduction in E. coli O157:H7 in pasteurized apple cider. Inactivation regressions were second-order polynomials, showing an initial period of rapid inactivation, eventually tailing off. Results indicate that ultrasound technology is a promising processing alternative for the reduction of microorganisms in liquid foods. |
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Authors:
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Dennis J D'Amico; Todd M Silk; Junru Wu; Mingruo Guo |
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Publication Detail:
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Type: Journal Article; 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 Mar |
Date Detail:
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Created Date: 2006-03-17 Completed Date: 2006-04-06 Revised Date: 2008-11-21 |
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: 556-63 Citation Subset: IM |
Affiliation:
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Department of Nutrition and Food Sciences, University of Vermont, Burlington, Vermont 05405, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Beverages / microbiology* Colony Count, Microbial Escherichia coli O157 / growth & development* Food Handling / methods Food Microbiology Food Preservation / methods* Hot Temperature Humans Listeria monocytogenes / growth & development* Malus / microbiology Milk / microbiology*, ultrasonography Time Factors Ultrasonography / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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