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Heat resistance of ileal loop reactive Bacillus cereus strains isolated from commercially canned food.

Authors
  • Bradshaw, J G
  • Peeler, J T
  • Twedt, R M
Type
Published Article
Journal
Applied microbiology
Publication Date
Dec 01, 1975
Volume
30
Issue
6
Pages
943–945
Identifiers
PMID: 2108
Source
Medline
Language
English
License
Unknown

Abstract

Sporeformers isolated from a commercially canned food were identified as Bacillus cereus, lactose-positive variants. The thermal resistance of spore crops produced from each of two representative cultures was determined in 0.067 M phosphate buffer at pH 7.0. The D121.1 values for one isolate were approximately 0.03 min (z = 9.9C), whereas the D121.1 values for the other isolate were 2.35 min (z = 7.9 C). Thermal inactivation results for heat-stressed isolates from each strain showed no significant alteration in heat resistance from that of the two parent spore crops. Both isolates were reactive when injected into the ligated rabbit ileum.

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