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Incorporation of Nanoencapsulated Garlic Essential Oil Into Edible Films: A Novel Approach for Extending Shelf Life of Vacuum-Packed Sausages Publisher Pubmed



Esmaeili H1 ; Cheraghi N2, 3 ; Khanjari A2 ; Rezaeigolestani M4 ; Basti AA2 ; Kamkar A2 ; Aghaee EM5
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Authors Affiliations
  1. 1. Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
  2. 2. Department of Food Hygiene, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
  3. 3. Tehran Hamburger Company, Tehran, Iran
  4. 4. Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
  5. 5. Department of Environmental Health, Division of Food Safety & Hygiene, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Source: Meat Science Published:2020


Abstract

The efficacy of chitosan (CH) and whey protein (WP) films impregnated with garlic essential oil (GEO, 2% v/v) or nanoencapsulated GEO (NGEO, 2% v/v) to extend the shelf life of refrigerated vacuum-packed sausages were assessed and compared during 50 days. The primary evaluation of GEO and NGEO showed that GEO had a considerable amount of active compounds diallyl sulfide derivatives (~67%) and the mean size and zeta potential of NGEO were 101 nm and −7.27 mV, respectively. Based on the microbiological and lipid stability analysis of the sausages, all active films retarded lipid oxidation and the growth of main spoilage bacterial groups compared to the control, and CH film containing NGEO exhibited the best result with the peroxide value, thiobarbituric acid reactive substances and aerobic plate count of 0.37 (meq/kg lipid), 0.47 (mg malondialdehyde/kg) and 3.69 (log CFU/g), respectively, on day 50. The nanoencapsulation of GEO made no significant differences in the sensory properties comparing to free-GEO samples (P <.05). © 2020 Elsevier Ltd
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