Unraveling the effect of the combination of modified atmosphere packaging and ε-polylysine on the physicochemical properties and bacterial community of greater amberjack (Seriola dumerili)

The combined effect of epsilon-polylysine (PL) and modified atmosphere packaging (MAP; 60% CO2/40% N-2) on the bacterial community of greater amberjack filets and their physicochemical properties was evaluated at 4 degrees C. The total viable counts (TVC), psychrotrophic bacterial count, sensory index, texture analysis, and total volatile basic nitrogen (TVB-N) revealed that PL, MAP, and MAP + PL treatment delayed the deterioration of greater amberjack filets. These treatment groups also showed decreased accumulation of biogenic amines. High-throughput 16S rRNA gene sequencing results indicated that these treatments suppressed the growth of Pseudomonas in greater amberjack filets. Furthermore, the MAP + PL treatment group was observed to be more effective than the PL and MAP groups, extending the shelf life of greater amberjack filets by 6 days. This investigation showed that the combination of PL and MAP has the potential to retain the quality and extend the shelf life of greater amberjack.

Automated summary

The combination of epsilon-polylysine and modified atmosphere packaging has a positive impact on the quality and shelf life of greater amberjack filets, delaying deterioration and reducing the accumulation of biogenic amines.