This paper should be cited as: Raeisi, M. Tajik, H. Aliakbarlu,
J. Medical Laboratory Journal, Autumn- Winter 2012, Vol.6, No.2.[Article in
Persian]
Antibacterial
Effect of Carboxymethyl Cellulose Coating Enriched by Zataria Multiflora Essential
Oil and Grape Seed Extract
Raeisi,
M.(PhD)*1, Tajik, H.(PhD)2, Aliakbarlu, J.(PhD)3
1 PhD Student in Food Hygiene, Department of Food
Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia, Iran
2 Professor of Food Hygiene, Department of Food
Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia, Iran
3 Assistant professor of Food Hygiene, Department of Food
Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia, Iran
Abstract
Background and objectives: The presence of pathogenic bacteria and the factors
causing food spoilage are the great challenge for public health. Attention to
natural additives instead of chemical preservatives resulted in conducting
several studies on plant essential oil and extracts. We aimed at evaluating the
antibacterial effect of carboxymethyl cellulose coating enriched by Zataria
multiflora essential oil and grape seed extract on rainbow trout meat.
Material and methods: In this study, two
concentrations of Zataria multiflora essential oil (1% and 2%) and two
concentrations of grape seed extract (0.5% and 1%) were used both alone and in
combination with Carboxymethyl cellulose coating. Antibacterial effect of these
treatments was evaluated by enumeration of bacteria in special culture media.
Results: The results obtained in this study
demonstrate that Zataria multiflora essential oil in combination with
grape seed extract significantly can
decrease the number of bacteria and delay the spoilage of the samples (p<0.05).
Conclusion: Coating enriched by Zataria multiflora and grape seed
extract can properly delay the growth of spoilage microorganisms and prolong
the shelf life of meat products.
Key words: Carboxymethyl cellulose coating, Zataria multiflora
essential oil, Grape seed extract, Microbial flora
Corresponding Author: Raeisi, M. Email: Raeisi_mojtaba@yahoo.com
Received 22 Nov 2012 Revised 19 Dec 2012 Accepted 20 Dec 2012