Effects of Minerals on Resistance of Bacillus subtilis Spores to Heat and Hydrostatic Pressure

Noriyuki Igura, Yuya Kamimura, M. Shahidul Islam, Mitsuya Shimoda, Isao Hayakawa

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Among Bacillus subtilis IFO13722 spores sporulated at 30, 37, and 44°C, those sporulated at 30°C had the highest resistance to treatments with high hydrostatic pressure (100 to 300 MPa, 55°C, 30 min). Pressure resistance increased after demineralization of the spores and decreased after remineralization of the spores with Ca2+ or Mg2+, whereas the resistance did not change when spores were remineralized with Mn 2+ or K+, suggesting that former two divalent ions were involved in the activation of cortex-lytic enzymes during germination.

Original languageEnglish
Pages (from-to)6307-6310
Number of pages4
JournalApplied and environmental microbiology
Volume69
Issue number10
DOIs
Publication statusPublished - Oct 2003

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology
  • Ecology

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