Enhanced antimicrobial activity of essential oil components immobilized on silica particles

Food Chemistry
María Ruiz-RicoJosé M Barat

Abstract

The antimicrobial activity of essential oils components (EOCs) is well-known. However, their high volatility and powerful aroma limit their application in the formulation of a wide range of food products. In this context, the antimicrobial activity of carvacrol, eugenol, thymol and vanillin grafted onto the surface of three silica supports with different morphologies, textural properties and chemical reactivities (fumed silica, amorphous silica and MCM-41) was evaluated herein. Materials characterization revealed a good immobilization yield and all the devices showed a micro-scale particle size. Sensory evaluation revealed that sensory perception of EOCs decreases after covalent immobilization. Moreover, immobilization greatly enhanced the antimicrobial activity of the essential oil components against Listeria innocua and Escherichia coli compared to free components. The incorporation of EOCs immobilized on silica particles into pasteurized milk inoculated with L. innocua demonstrated their effectiveness not only for in vitro conditions, but also in a real food system.

Citations

Apr 25, 2018·Journal of Medicinal Food·Wilman Carrillo, Mercedes Ramos
Dec 14, 2019·World Journal of Microbiology & Biotechnology·María Ruiz-RicoJosé M Barat
Apr 30, 2019·Small·Andrea BernardosRamón Martínez-Máñez
Nov 20, 2020·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Cristina FuentesMaría José Ruiz
Dec 31, 2020·Nanomaterials·Jawad SarfrazMarit Kvalvåg Pettersen
May 1, 2021·International Journal of Molecular Sciences·Elisa Poyatos-RacioneroAndrea Bernardos
Sep 7, 2021·Critical Reviews in Food Science and Nutrition·Maryam Azizi-LalabadiSeid Mahdi Jafari

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