Synergistic Effects of Bacteriocin from <i>Lactobacillus panis</i> C-M2 Combined with Dielectric Barrier Discharged Non-Thermal Plasma (DBD-NTP) on <i>Morganella</i> sp. in Aquatic Foods

Abstract

In this paper, Lactocin C-M2(C-M2) was used together with a new non-thermal technology, non-thermal plasma sterilization (NTPS), to inactive the putrefactive bacteria Morganella sp. wf-1 isolated from aquatic foods. The mechanism underlining the action mode of C-M2 and NTPS was investigated, revealing that the bacteriocin and NTPS had synergistic effects on the disinfection of Morganella sp. wf-1. Compared with the bacteria cells treated by only C-M2 or NTPS, the plasmolysis of cells treated by C-M2 and NTPS was to a larger extent. Moreover, the cell permeability and the contents of UV-absorbing compounds and K+ released from the intra-cells was significantly higher for the C-M2 + NTPS treated cells than the others (p p Morganella sp. wf-1 cells. The results showed the potential of the application of the bacteriocin and NTPS in the food industry.

Keywords

• bacteriocin
• non-thermal plasma
• molecular mechanism
• putrefactive bacteria
• aquatic foods