| Kinetic Analysis of E. coli Inactivation by High Hydrostatic Pressure with Salts. | |
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MedLine Citation:
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PMID: 21535693 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Inactivation of E. coli by high hydrostatic pressure (250 to 400 MPa) with salts was investigated based on kinetic analysis. At concentrations from 0.074 to 0.145 M and from 0.240 to 0.290 M, both the absolute activation volumes and the preexponential factors were similar in KCl, NaCl, and LiCl solutions, suggesting that pressure inactivation is not salt-specific. On the other hand, in the intermediate salt-concentration range of 0.145 to 0.240 M, inactivation kinetics in the presence of the Na(+) and K(+) differed significantly from those in the presence of Li(+) (P < 0.05). In this concentration range, effect of salt stress and osmotic stress differed significantly from those in concentrations below 0.145 M or above 0.240 M. The cellular response to pressure varies with salt type and salt concentration. These novel findings provide important clues to distinguish between salt stress and osmotic stress in the inactivation of E. coli. |
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Authors:
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Shigeaki Ueno; Toru Shigematsu; Toshimi Hasegawa; Jun Higashi; Mayumi Anzai; Mayumi Hayashi; Tomoyuki Fujii |
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Publication Detail:
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Type: Journal Article Date: 2010-12-06 |
Journal Detail:
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Title: Journal of food science Volume: 76 ISSN: 1750-3841 ISO Abbreviation: J. Food Sci. Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2011-05-03 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0014052 Medline TA: J Food Sci Country: United States |
Other Details:
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Languages: eng Pagination: M47-53 Citation Subset: IM |
Affiliation:
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Authors Ueno and Fujii are with Graduate School of Agricultural Science, Tohoku Univ., 1-1 Tsutsumidori Amamiyamachi, Aoba-ku, Sendai, Miyagi 981-8555, Japan. Authors Shigematsu, Hasegawa, Higashi, Anzai, Hayashi, and Fujii are with Dept. of Food Science, Niigata Univ. of Pharmacy and Applied Life Sciences (NUPALS), 265-1 Higashijima, Akiha-ku, Niigata, Niigata 956-8603, Japan. Direct inquiries to author Ueno (E-mail: shigeakiu@bios.tohoku.ac.jp). |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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