| Resistance of two temperate Lactobacillus paracasei bacteriophages to high pressure homogenization, thermal treatments and chemical biocides of industrial application. | |
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MedLine Citation:
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PMID: 22029923 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Temperate bacteriophages ф iLp84 and ф iLp1308, previously isolated from mitomycin C-induction of Lactobacillus paracasei strains 84 and CNRZ1308, respectively, were tested for their resistance to several physical and chemical treatments applied in dairy industry. Long-term survival at 4 °C, -20 °C and -80 °C, resistance to either thermal treatments of 63 °C, 72 °C and 90 °C, high pressure homogenization (HPH, 100 MPa) or classic (ethanol, sodium hypochlorite and peracetic acid) and new commercial sanitizers, namely A (quaternary ammonium chloride), B (hydrogen peroxide, peracetic acid and peroctanoic acid), C (alkaline chloride foam), D (p-toluensulfonchloroamide, sodium salt) and E (ethoxylated nonylphenol and phosphoric acid), were determined. Phages were almost completely inactivated after eight months of storage at 25 °C, but viability was not affected at 4 °C, -20 °C or -80 °C. Both phages tolerated well HPH treatments. Phage iLp1308 showed higher thermal resistance than ф iLp84, but neither resisted 90 °C for 2 min. Best chemical inactivation was accomplished using peracetic acid or biocides A, C and E, whereas biocides B and D were completely ineffective. These results help to improve selection of chemical agents and physical treatments to effectively fight against phage infections in dairy plants. |
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Authors:
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D J Mercanti; D M Guglielmotti; F Patrignani; J A Reinheimer; A Quiberoni |
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Publication Detail:
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Type: Journal Article Date: 2011-09-14 |
Journal Detail:
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Title: Food microbiology Volume: 29 ISSN: 1095-9998 ISO Abbreviation: Food Microbiol. Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2011-10-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8601127 Medline TA: Food Microbiol Country: England |
Other Details:
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Languages: eng Pagination: 99-104 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Instituto de Lactología Industrial, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero 2829, 3000 Santa Fe, Argentina. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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