Encapsulation of Zataria multiflora Boiss L. Essential Oil in Chitosan Nanoparticles: Characterization and Antifungal Properties in Culture Media and UF-Feta Cheese
Aso Kaboodi
1
(
Department of Food Hygiene, Faculty of Veterinary Medicine, Tabriz Medical Sciences, Islamic Azad University, Tabriz, Iran
)
Hamid Mirzaei
2
(
Department of Food Hygiene, Faculty of Veterinary Medicine, Tabriz Medical Sciences, Islamic Azad University, Tabriz, Iran|Department of Food Biotechnology, Biotechnology Research Center, Tabriz Branch, Islamic Azad University, Tabriz, Iran
)
Farzad katiraee
3
(
Department of Pathobiology, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
)
Afshin Javadi
4
(
Department of Food Hygiene, Faculty of Veterinary Medicine, Tabriz Medical Sciences, Islamic Azad University, Tabriz, Iran|Department of Food Biotechnology, Biotechnology Research Center, Tabriz Branch, Islamic Azad University, Tabriz, Iran
)
Mohammad Reza Afshar Mogaddam
5
(
Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran|Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
)
Keywords: encapsulation, Antifungal, Cheese, Zataria multiflora essential oil,
Abstract :
This work explores the antifungal effect of Zataria multiflora essential oil (ZEO) and its nanocapsules (ZEO-NCs) on the culture medium and UF-Feta cheese. After selecting ZEO among the three desired EOs (based on MIC and MFC assays), chitosan nanoparticles were prepared in optimal conditions. Based on GC-MS analysis, the main constituents of ZEO were thymol (20.09%) followed by cymene (19.88%), and gamma-terpinene (18.58%). According to the response surface method, the optimum amounts of chitosan, tween 80, and ZEO were 7.97% w/v, 1.3% v/v, and 0.87% v/v, respectively, to produce the proper nanoparticles with the minimum particle size and the maximum values of zeta potential and encapsulation efficiency. A sharp peak at 2θ of 20◦ in the XRD spectrum of chitosan and its broadening in the spectrum of ZEO-NCs exhibited a high degree of crystallinity and entrapment of ZEO within nanocapsules. Also, the SEM images showed clusters of accumulated particles with relatively spherical nano-sized capsules. The formulated nanocapsules showed a stronger antifungal effect on Penicillium citrinum and Aspergillus niger, while the free form of ZEO caused more inhibition of Aspergillus flavus. Also, the lowest Antifungal activity among all treatments was recorded for Non-loaded NCs.
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