Inactivation of Listeria monocytogenes in brine and saline by alternating high-voltage pulsed current

Mi Hee Lee, Dong Wook Han, Yeon I. Woo, Masakazu Uzawa, Jong Chul Park

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The inactivating efficiency of alternating high-voltage pulsed (AHVP) current was investigated in brine (20 w/v% NaCl) and saline (0.9 w/v% NaCl) inoculated with 1 × 107 cells/ml of Listeria monocytogenes. AHVP current at 12 V with 1 pulse completely inactivated L. monocytogenes in brine within 3 ms, while the bacteria in saline were fully inactivated by 10-pulsed electric treatment at 12 V within the same time. Electron microscopic observation demonstrated substantial structural damage of electrically treated L. monocytogenes in brine. These results suggest that AHVP treatment would be effective for the rapid and complete inactivation of L. monocytogenes in brine or saline solution.

Original languageEnglish
Pages (from-to)1274-1277
Number of pages4
JournalJournal of microbiology and biotechnology
Volume18
Issue number7
Publication statusPublished - 2008 Jul 28

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Applied Microbiology and Biotechnology

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