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640. Some bacteriological aspects of commercially sterilized milk: II. Type of sporeforming bacteria isolated

Published online by Cambridge University Press:  01 June 2009

M. R. Candy  and
Agnes A. Nichols
M. R. Candy
Affiliation:
National Agricultural Advisory Service, Woodthorne, Wolverhampton
Agnes A. Nichols
Affiliation:
National Agricultural Advisory Service, Woodthorne, Wolverhampton
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Extract

Cultures of sporeforming bacteria isolated from commercially sterilized milk were examined and seasonal variations in the incidence of B. subtilis/ B. licheniformis strains were apparent which may account for the increased rate of spoilage at 30° C. during the winter.

B. subtilis was the most common mesophilic sporeformer isolated, and under favourable conditions it produces rapid digestion of milk.

Thermophilic sporeformers are frequently present, and usually produce a firm acid clot in milk held at temperatures favourable for their growth. The classification of the thermophiles isolated is uncertain and a review of the classification of the aerobic thermophilic sporeformers in general is required.

Cl. thermosaccharolyticum, a gas-producing thermophile, was isolated from sterilized milk.

Type
Original Articles
Information
Journal of Dairy Research , Volume 23 , Issue 3 , October 1956 , pp. 329 - 335
Copyright
Copyright © Proprietors of Journal of Dairy Research 1956

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References

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