Dry Heat Inactivation of Bacillus subtilis var. niger Spores as a Function of Relative Humidity

Author:

Brannen J. P.1,Garst D. M.1

Affiliation:

1. Planetary Quarantine Department, Sandia Laboratories, Albuquerque, New Mexico 87115

Abstract

Dry heat sterilization of Bacillus subtilis var. niger spores at 105 C is enhanced in the relative humidity range 0.03 to 0.2%. D-values of 115 and 125 C are predicted by a kinetic model with parameters set from 105 C data. These predictions are compared to observations.

Publisher

American Society for Microbiology

Subject

General Pharmacology, Toxicology and Pharmaceutics,General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine

Reference5 articles.

1. On the role of water activity in the dry heat sterilization of microorganisms;Brannen J. P.;J. Theoret. Biol.,1971

2. Glasstone S. K. J. Laidler and H. Eyring. 1941. The theory of rate processes p. 195-196. McGraw-Hill Book Co. Inc. New York.

3. The heat resistance of bacterial spores at various water activities;Murrell W. G.;J. Gen. Microbiol.,1966

4. Weast R. C. (ed.). 1966. Handbook of chemistry and physics p. D-105-107. Chemical Rubber Co. Cleveland.

5. Wexler A. and W. A. Wildhack (ed.) 1965. Humidity and moisture vol. 3 p. 52. Reinhold Publishing Co. New York.

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