Preparation and evaluation of food-grade nanoemulsion of tarragon ( L.) essential oil: antioxidant and antibacterial properties.

Journal: Journal of food science and technology
Published Date: Jul 13, 2020

Abstract

This study aimed at to formulate a food-grade nanoemulsion of tarragon essential oil (NEO) and investigate its antioxidant and antimicrobial properties. Oil in water NEO was formed by blending 10% of tarragon EO (TEO), 85% water, and a mixture of 5% surfactants, then antioxidant and antimicrobial activities were evaluated. The main components of TEO were estragole, beta--ocimene, beta--ocimene, and l-limonene. NEO droplet had a diameter of 50 nm and a zeta potential of - 30 mV. Results of free radical DPPH scavenging activity revealed that hydrogen donating capacity of the nanoemulsion was significantly higher than TEO and at 2.5 µg/mL concentration it showed complete inhibitory activity against DPPH. The ferric reducing potential was almost similar for TEO and NEO. NEO showed higher antibacterial potential against and and . The results of this work indicated that NEO had higher antioxidant and antimicrobial activity compared with free TEO.

Authors

  • Maryam Azizkhani
    Department of Food Hygiene, Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Aftab 24 St., Haraz Av., P.O 46186-49767, Amol, Iran.
  • Freshteh Jafari Kiasari
    Department of Food Hygiene, Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Haraz St. Aftab 24 Av., Amol, Iran.
  • Fahimeh Tooryan
    Department of Food Hygiene, Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Aftab 24 St., Haraz Av., P.O 46186-49767, Amol, Iran.
  • Mohammad Hassan Shahavi
    Faculty of Engineering Modern Technologies, Amol University of Special Modern Technologies, Abazar 35 Alley, Taleghani Av., Amol, Mazandaran Province Iran.
  • Razieh Partovi
    Department of Food Hygiene, Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Aftab 24 St., Haraz Av., P.O. 46186-49767, Amol, Iran.

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