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. 1971 Mar;21(3):466–469. doi: 10.1128/am.21.3.466-469.1971

Isolation and Identification of Psychrophilic Species of Bacillus from Milk

T E Shehata 1, E B Collins 1
PMCID: PMC377204  PMID: 5108104

Abstract

Forty isolates from 97 raw milk samples (heated to 80 C for 10 min and stored at 4 to 7 C for 3 to 4 weeks) were sporeforming, aerobic, gram-positive or gram-variable, rod-shaped bacteria. Fifteen isolates that were identified had characteristics similar to species of Bacillus, except that they had lower growth temperature ranges, were gram-variable, and were somewhat different in sugar fermentations. Four isolates grew well within 2 weeks at 0 C, but they grew faster at 20 to 25 C. These psychrophilic sporeforming bacteria, the importance of which is discussed, are considered to be variant strains of mesophilic bacilli adapted to low temperatures.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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