Development of an antimicrobial coating containing nisin and pectin for deli meat turkey bologna

Abstract

Training alone cannot stop the spread of L. monocytogenes; antimicrobial packaging using nisin is an excellent approach to control this microorganism. While research indicates that progress is being made towards the commercialization of nisin-based films, there is still a gap between what can be done in research laboratories and what current packaging companies are capable of or willing to do. After 7 days, levels of nisin were observed for coating A and coating B in polymer (PA: 2617.83 IU/mL, PB: 1699 IU/mL) and wax paper (WA: 1075 IU/mL, WB: 1699 IU/mL) using the agar well diffusion method. For the spot on lawn, 2291IU/mL levels of nisin were observed on PA, WA, PB, WB. Findings from our current research suggest that the developed coatings demonstrated antimicrobial activity against L. monocytogenes. All treatments (PA, WA, PB and WB) were statistically different from treatment C (control) in the reduction of L. monocytogenes. All treatments had a range of two to four log reduction compared with control over 63 days. The developed coatings were food safe, colorless and within the commercial range for viscosity and percent solids.