Dodecylamine rapidly kills of spores of multiple Firmicute species: properties of the killed spores and the mechanism of the killing.
bacillus
bacterial spores
disinfection
spores
sterilization
Journal
Journal of applied microbiology
ISSN: 1365-2672
Titre abrégé: J Appl Microbiol
Pays: England
ID NLM: 9706280
Informations de publication
Date de publication:
Dec 2021
Dec 2021
Historique:
revised:
28
03
2021
received:
31
01
2021
accepted:
09
05
2021
pubmed:
18
5
2021
medline:
1
12
2021
entrez:
17
5
2021
Statut:
ppublish
Résumé
Previous work showed that Bacillus subtilis dormant spore killing and germination by dodecylamine take place by different mechanisms. This new work aimed to optimize killing of B. subtilis and other Firmicutes spores and to determine the mechanism of the killing. Spores of seven Firmicute species were killed rapidly by dodecylamine under optimal conditions and more slowly by decylamine or tetradecylamine. The killed spores were not recovered by additions to recovery media, and some of the killed spores subsequently germinated, all indicating that dodecylamine-killed spores truly are dead. Spores of two species treated with dodecylamine were more sensitive to killing by a subsequent heat treatment, and spore killing of at least one species was faster with chemically decoated spores. The cores of dodecylamine-killed spores were stained by the nucleic acid stain propidium iodide, and dodecylamine-killed wild-type and germination-deficient spores released their stores of phosphate-containing small molecules. This work indicates that dodecylamine is likely a universal sporicide for Firmicute species, and it kills spores by damaging their inner membrane, with attendant loss of this membrane as a permeability barrier. There is a significant need for agents that can effectively kill spores of a number of Firmicute species, especially in wide area decontamination. Dodecylamine appears to be a universal sporicide with a novel mechanism of action, and this or some comparable molecule could be useful in wide area spore decontamination.
Substances chimiques
Amines
0
Picolinic Acids
0
dodecylamine
YWY9OD6A2K
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2612-2625Subventions
Organisme : University of Connecticut
Informations de copyright
© 2021 The Society for Applied Microbiology.
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