Monoacylglycerols as fruit juices preservatives

Iva Doležálková, Zdeněk Máčalík, Adéla Butkovičová, Rahula Janiš and Leona Buňková
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Iva Doležálková: Department of Fat, Tenside and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlin, Zlín, Czech Republic
Zdeněk Máčalík: Department of Fat, Tenside and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlin, Zlín, Czech Republic
Adéla Butkovičová: Department of Fat, Tenside and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlin, Zlín, Czech Republic
Rahula Janiš: Department of Fat, Tenside and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlin, Zlín, Czech Republic
Leona Buňková: Department of Fat, Tenside and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlin, Zlín, Czech Republic

Czech Journal of Food Sciences, 2012, vol. 30, issue 6, 567-572

Abstract: Limiting or preventing the growth of undesirable microbial flora in food products is one of the main goals of food microbiology. A number of preservation methods have been designed to extend the shelf-life of the food products by reducing the microbial growth while new antimicrobials are still examined. Monoglycerides are naturally occurring compounds with inhibitory activity against various microorganisms. We evaluate the antimicrobial effects of 8 monoglycerides in vitro and in fresh unpasteurised apple juice. Out of all monoglycerides tested, monocaprin (MAG C10:0) and monolaurin (MAG C12:0) showed the best ability to supress or prevent the growth of filamentous fungi in vitro. The addition of these monoglycerides to apple juice resulted in a decrease in total viable counts of bacteria and yeasts. Monocaprin was able to stop completely the growth of bacteria and yeasts at a concentration of 250 µg/ml, and to prevent microbial spoilage of apple juices for at least two weeks.

Keywords: monoglycerides; antimicrobial activity; bacteria; yeasts; filamentous fungi; apple juice (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjf:v:30:y:2012:i:6:id:485-2011-cjfs

DOI: 10.17221/485/2011-CJFS

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