Characterization of thermostable bacteriophage CPD2 and its endolysin LysCPD2 as biocontrol agents against Clostridium perfringens

다국어 초록 (Multilingual Abstract)

Clostridium perfringens is one of the major foodborne pathogens in humans and animals. With the prevalence of antibiotic-resistant C. perfringens strains, bacteriophages and their endolysins have received considerable attention as promising alternatives to antibiotics. In this study, C. perfringens phage CPD2 was isolated from retail chicken samples. CPD2 belongs to the Podoviridae family and exhibits remarkable thermostability. While CPD2 has narrow host specificity, its endolysin LysCPD2 showed a broader lytic range, killing not only C. perfringens strains but other Gram-positive bacteria, such as B. cereus and B. subtilis. In addition, due to its exceptional thermal stability, LysCPD2 showed significant antibacterial ability against germinating C. perfringens spores during the heat activation process (75 °C for 20 min). Taken together, these results indicate that both thermostable phage CPD2 and its endolysin LysCPD2 can be used as efficient antimicrobial agents to control C. perfringens during thermal processing of foods.

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