Physiological modelling of the response of Kocuria rosea exposed to changing water activity

Phillip C. Wright, Tsuyoshi Tanaka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Physiological effects of NaCl concentration (equivalent water activities, aw, 1 to 0.87) were investigated with the moderately halophilic and piezotolerant bacterium, Kocuria rosea (formerly Micrococcus roseus), grown in bacteriological peptone/yeast extract broth. This bacterium, which was isolated from open shallow seawater, can grow in 150 g NaCl 1-1 (optimum NaCl concentration: 30 g 1-1, aw = 0.984) and under 207 MPa of hydrostatic pressure. The effects of water activity on µm can be quantitatively predicted, to a high level of accuracy by application of the Aiba/Edwards, and the Levenspiel-type unstructured inhibition-type kinetic models.

Original languageEnglish
Pages (from-to)603-609
Number of pages7
JournalBiotechnology Letters
Volume24
Issue number8
DOIs
Publication statusPublished - 2002

Keywords

  • Extremophile
  • Halophile
  • Micrococcus roseus
  • Piezophile
  • Unstructured kinetic inhibition models

Fingerprint Dive into the research topics of 'Physiological modelling of the response of Kocuria rosea exposed to changing water activity'. Together they form a unique fingerprint.

Cite this