The Effects of Nanochitosan Coating Integrated to Zataria Multiflora Boiss and Polylophium Involucratum Essential Oils on the Shelf-Life Extension of Silver Carp Fillets

Document Type : Research Paper


1 Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran

2 Department of Food Science and Technology, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran


Introduction: Active antimicrobial food packaging prevents the growth of foodborne pathogens and spoilage microorganisms by incorporating antimicrobial agents into the film materials. Methods: The effects of Nanochithosan (NC) coating containing various concentrations of Polylophium involucratum essential oil (PIEO) and Zataria multiflora Boiss. Essential oil (ZMEO) were investigated on microbial, chemical, and sensory characteristics of silver carp fillets within 12 days during refrigerated storageResults: The aerobic plate count (APC) exceeded 7 log CFU/g after day four and day six for the control and samples coated with pure NC, respectively. The samples coated with NC containing ZMEO 0.6% and PIEO 0.6% showed the lowest microbial count. In a control sample with NC containing ZMEO 0.6% and PIEO 0.6%, the total volatile base of nitrogen (TVB-N) reached 33.15 mg/100 g after eight days, but this value remained lower than 25 mg/100 g for the coated samples with NC containing ZMEO 0.6% and PIEO 0.6%. Generally, integrating the ZMEO and PIEO did not significantly and negatively affected the sensory characteristic of coated samples compared with those of control. Conclusion: According to the results, NC coatings containing ZMEO and PIEO were capable of being used as novel active packaging for fish meat products without compromising their organoleptic characteristics.


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