Bactericidal action mechanism of negatively charged food grade clove oil nanoemulsions

Food Chemistry
Hamid MajeedFang Zhong

Abstract

Clove oil (CO) anionic nanoemulsions were prepared with varying ratios of CO to canola oil (CA), emulsified and stabilized with purity gum ultra (PGU), a newly developed succinylated waxy maize starch. Interfacial tension measurements showed that CO acted as a co-surfactant and there was a gradual decrease in interfacial tension which favored the formation of small droplet sizes on homogenization until a critical limit (5:5% v/v CO:CA) was reached. Antimicrobial activity of the negatively charged CO nanoemulsion was determined against Gram positive GPB (Listeria monocytogenes and Staphylococcus aureus) and Gram negative GNB (Escherichia coli) bacterial strains using minimum inhibitory concentration (MIC) and a time kill dynamic method. Negatively charged PGU emulsified CO nanoemulsion showed prolonged antibacterial activities against Gram positive bacterial strains. We concluded that negatively charged CO nanoemulsion droplets self-assemble with GPB cell membrane, and facilitated interaction with cellular components of bacteria. Moreover, no electrostatic interaction existed between negatively charged droplets and the GPB membrane.

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Citations

Jul 16, 2016·Journal of Biotechnology·Francesco Donsì, Giovanna Ferrari
Jan 27, 2017·Annual Review of Food Science and Technology·Laura Salvia-TrujilloOlga Martín-Belloso
Jul 25, 2018·Critical Reviews in Food Science and Nutrition·Jian JuWeirong Yao
Jun 28, 2020·Pest Management Science·Jianguo FengWenchao Yang
Mar 28, 2018·Critical Reviews in Food Science and Nutrition·Jian JuWeirong Yao
May 28, 2019·Daru : Journal of Faculty of Pharmacy, Tehran University of Medical Sciences·Priyanka KumariAbha Meena
Oct 5, 2017·Journal of Food Science and Technology·Hafiz Rizwan SharifJunaid Haider
Feb 29, 2020·International Journal of Biological Macromolecules·Sahil ChaudharyRakesh Sharma
Mar 23, 2021·Environmental Chemistry Letters·Tolulope Joshua Ashaolu
Apr 16, 2021·Journal of the American College of Nutrition·Sagar PrasharPrince Chawla
Jan 7, 2020·International Journal of Biological Macromolecules·Prince ChawlaSneh Punia
Jul 25, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Anjali MalikPrince Chawla

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