Effectiveness of Zataria multiflora Boiss essential oil and grape seed extract impregnated chitosan film on ready-to-eat mortadella-type sausages during refrigerated storage

• Published in: Journal of the science of food and agriculture Vol. 91; no. 15; pp. 2850 - 2857
• Main Authors: Moradi, Mehran, Tajik, Hossein, Razavi Rohani, Seyed Mehdi, Oromiehie, Abdul Rasoul
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.12.2011; Wiley; John Wiley and Sons, Limited
• Subjects: Animals; Anti-Bacterial Agents - pharmacology; Antioxidants - pharmacology; Aroma and flavouring agent industries; Bacteria - growth & development; Biological and medical sciences; Chitosan; edible film; Fast Foods; Flowers & plants; Food industries; Food Microbiology; Food Packaging; Food Preservation - methods; Food processing industry; Food Storage; Fruit and vegetable industries; Fundamental and applied biological sciences. Psychology; Gram-positive bacteria; Grape Seed Extract - pharmacology; L. monocytogenes; Lamiaceae - chemistry; lipid oxidation; Lipid Peroxidation - drug effects; Listeria monocytogenes; Meat Products - microbiology; Oils, Volatile - pharmacology; Oxidation; Phenols - pharmacology; plant metabolites; Polyphenols; ready to eat; Refrigeration; spoilage; Swine; Vitaceae; Vitis - chemistry; monocytogenes; Sausage; plant metabolites; Seeds; Fruit; Metabolite; Meat product; Pork product; Lipids; ready to eat; Extract; lipid oxidation; L; spoilage; Mortadella; Refrigerated storage; Edible film; Grape; Food preservation; Essential oil; Oxidation; Conditioning; Chitosan; Edible packaging
• ISSN: 0022-5142; 1097-0010; 1097-0010
• DOI: 10.1002/jsfa.4531

BACKGROUND: The effectiveness of chitosan films containing Zataria multiflora Boiss essential oil (ZEO) (5 and 10 g kg−1) and grape seed extract (GSE) (10 g kg−1) on lipid oxidation and microbial (lactic acid bacteria, aerobic mesophiles and inoculated Listeria monocytogenes) characteristics of mortadella sausage at 4 °C for 21 days was evaluated. The release of total phenolics (TPs) into sausage was also assessed. RESULTS: All films exhibited antibacterial activity against L. monocytogenes on agar culture media. Chitosan films containing ZEO were the most effective on the growth of bacteria. The growth of L. monocytogenes was significantly inhibited by ZEO‐GSE containing films especially during storage of the sausages for 6 days. Aerobic mesophiles and lactic acid bacteria were the most sensitive and resistant groups to films by 0.1–1.1 and 0.1–0.7 log cycles reduction, respectively. Sausages wrapped by 10 g kg−1 GSE + 10 g kg−1 ZEO films had the lowest degrees of lipid oxidation, which was 23% lower than the control. The TPs of ZEO films decreased to zero after 6 days, whereas TPs of GSE films followed a slight decrease during the storage. CONCLUSION: Antimicrobial/antioxidant chitosan film could be developed by incorporating GSE and ZEO for extending the shelf life of mortadella sausage. Copyright © 2011 Society of Chemical Industry