فهرست نشریات علمی دسترسی آزاد ایران

Introduction: The aims of the present work were to add 0.25% and 0.5% Zingiber officinale extract into the chitosan-poly(vinyl alcohol) film by casting method and investigate their utilization as antimicrobial packaging polymer in retarding the chemical spoilage and microbial growth during prolonged shelf-life storage of chicken fillets. Methods: Fresh chickens were purchased from a local poultry processing plant (Kermanshah, Iran). One-hundred grams of chicken fillet samples were packaged with designated films and maintained at 4 ± 1 °C for 10 days. Total viable count, psychrotrophic bacterial count, Enterobacteriaceae, and peroxide value of chicken fillets were evaluated during refrigerated storage conditions. Results: The microbial counts and peroxide value of all prepared treatments significantly incremented over a 10-day storage time, while the growth rate of microorganisms and chemical changes in the control and fillets packaged with straight chitosan-poly(vinyl alcohol) film were higher compared to other treatments. Total viable count, psychrotrophic bacterial count, Enterobacteriaceae, and peroxide value of chicken fillets packaged with chitosan-poly(vinyl alcohol) film + 0.5% Zingiber officinale extract, as the best treatment, were 6.73 log CFU/g, 3.95 log CFU/g, 3.89 log CFU/g, and 0.82 meq peroxide/kg lipid, respectively, at the end of the study period. Conclusion: The results indicated that the designated films could be a promising method to extend the shelf-life of chicken fillets’ quality during refrigerated storage.