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Applied and Environmental Microbiology, October 2003, p. 6307-6310, Vol. 69, No. 10
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.10.6307-6310.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

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

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

Laboratory of Food Process Engineering, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka City, 8128581 Japan

Received 7 March 2003/ Accepted 31 July 2003

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 Mn2+ or K+, suggesting that former two divalent ions were involved in the activation of cortex-lytic enzymes during germination.

* Corresponding author. Mailing address: Laboratory of Food Process Engineering, Faculty of Agriculture, Kyushu University, Hakozaki 6-10-1, Higashi-ku, Fukuoka City, 8128581 Japan. Phone: 81-92-642-3018. Fax: 81-92-642-3018. E-mail: igura{at}agr.kyushu-u.ac.jp.

Applied and Environmental Microbiology, October 2003, p. 6307-6310, Vol. 69, No. 10
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.10.6307-6310.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Black, E. P., Koziol-Dube, K., Guan, D., Wei, J., Setlow, B., Cortezzo, D. E., Hoover, D. G., Setlow, P. (2005). Factors Influencing Germination of Bacillus subtilis Spores via Activation of Nutrient Receptors by High Pressure. Appl. Environ. Microbiol. 71: 5879-5887 [Abstract] [Full Text]  
  • Margosch, D., Ganzle, M. G., Ehrmann, M. A., Vogel, R. F. (2004). Pressure Inactivation of Bacillus Endospores. Appl. Environ. Microbiol. 70: 7321-7328 [Abstract] [Full Text]  


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