Characterization of fatty acid composition, spore germination, and thermal resistance in a nisin-resistant mutant of Clostridium botulinum 169B and in the wild-type strain.

Abstract excerpt

The membrane fatty acids, thermal resistance, and germination of a nisin-resistant (Nisr) mutant of Clostridium botulinum 169B were compared with those of the wild-type (WT) strain. In the membranes of WT cells, almost 50% of the total fatty acids were unsaturated, but in those of Nisr cells, only 23% of the fatty acids were unsaturated. WT and Nisr spores contained similar amounts (approximately 23%) of...

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