Effect of Atmospheric Pressure Plasma Jet on Inactivation of Listeria monocytogenes, Quality, and Genotoxicity of Cooked Egg White and Yolk

• 발행기관: 한국축산식품학회
• 저자명: Hyun Jung Lee Hyun Pa Song Hee Soo Jung Won Ho Choe Jun Sang Ham Jun Heon Lee Cheo Run Jo
• 간행물 정보: 『Food Science of Animal Resources』Korean Journal for Food Science of Animal Resources 제32권 제5호, 561~570쪽, 전체 10쪽
• 주제분류: 농수해양 > 식품과학
• 파일형태: PDF
• 발행일자: 2012.10.31

영문 초록

The objective of this study was to evaluate the effects of an atmospheric pressure plasma (APP) jet on L. monocytogenes inactivation, quality characteristics, and genotoxicological safety of cooked egg white and yolk. APP treatment using He gas resulted in a 5 decimal reduction in the number of L. monocytogenes in cooked egg white, whereas that using He+O2, N2, and N2+O2 decreased the number further, and to undetectable levels. All treatments of cooked egg yolk resulted in undetectable levels of inoculated L. monocytogenes. There were no viable cells of total aerobic bacteria after APP treatment on day 0 while the control showed approximately 3-4 Log CFU/g. On day 7, the numbers of total aerobic bacteria had increased by approximately 3 log cycles in cooked egg white, but there were no viable cells in cooked egg yolk after 2 min of APP jet. APP treatment decreased the L*-values of cooked egg white and yolk significantly on day 0. No significant sensory differences were found among the cooked egg white samples, whereas significant reductions in flavor, taste, and overall acceptability were found in cooked egg yolks treated with APP jets. SOS chromotest did not reveal the presence of genotoxic products following APP treatments of cooked egg white and yolk. Therefore, it can be concluded that APP jets can be used as a non-thermal means to enhance the safety and extend the shelf-life of cooked egg white and yolk.

키워드

atmospheric pressure plasma jet cooked egg L. monocytogenes quality genotoxicity