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Inhibition by Monoglycerides of L-Alanine-Triggered Bacillus cereus and Clostridium botulinum Spore Germination and Outgrowth

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Germination of Bacillus cereus T and Clostridium botulinum 62A spores in L-alanine solutions was totally inhibited by monolaurin (0.182 mM), monomyristin (0.331 mM), monolinolein (0.564 mM), and monolinolenin (0.142 mM). These monoglycerides inhibited the commitment to germinate, possibly by interfering with germinant diffusion to the binding site(s). They also blocked postcommitment to germinate reactions including loss of heat resistance. Outgrowth of fully germinated B. cereus T spores in the presence of L-alanine was inhibited by these monoglycerides.


Document Type: Research Article

Affiliations: 1: Département de Microbiologie Alimentaire et Biotechnologies, Institut Agronomique et Vétérinaire Hassan II, Rabat-Instituts, P.O. Box 6202, Rabat, Morocco 2: Department of Food Science and Nutrition, University of Minnesota, 1334 Eckles Avenue, Saint Paul, Minnesota 55108, USA

Publication date: August 1, 1996

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