Monolaurin, an extract from coconut oil could be used as a microbial agent in food. Monolaurin has been recognized as safe by the U.S. Food and Drug Administration (FDA) and is known for its antimicrobial properties. If used in combination with other antimicrobial agents, monolaurin can present an effective barrier to microorganisms.
Researchers from Zhejiang University in China studied the use of monolaurin as a nontraditional preservative in food products by combining it with commonly used antimicrobials in various concentrations and testing it on bacterial strains including Esherichia coli and on food components such as soy protein and water-soluble starch. Researchers made the following findings:
- Monolaurin combined with ethylenediaminetetraacetic acid (EDTA)，a binding agent, was effective against Esherichia coli and Bacillus subtilis but not Staphylococcus aureus.
- When combined with the antimicrobial nisin, monolaurin was synergistically effective against all three bacteria.
- Researchers studied monolaurin’s interaction with food components and found that its antibacterial effectiveness was reduced by fat or starch but was not affected by protein.
“These results contribute to a better understanding on the use of monolaurin as a nontraditional preservative for antimicrobial purpose in food products. The antimicrobial effects of monolaurin can be increased if used together or in combination with other preservative systems,”.
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