Journal
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
Volume 74, Issue 23, Pages 7126-7129Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.01292-08
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- USDA-ARS
- Mississippi Agricultural and Forestry Experiment Station [MIS371070]
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The combined lactic acid, monolaurin, and nisin effects on time-to-detection (optical density at 600 nm) extension were greater (P < 0.05) than any single or paired combination effect, which demonstrates a synergistic interaction among the antimicrobials. Monolaurin exposure caused C12:0 cell membrane incorporation. Lactic acid caused increased monolaurin C12:0 membrane incorporation, while nisin had no influence. We postulate that lactic acid-enhanced monolaurin C12:0 incorporation into the cell membrane increased membrane fluidity resulting in increased nisin activity.
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