Effect of Fat Contents on Thermal Resistance, Antibiotic Sensitivity, and Caco-2 Cell Invasion of Listeria monocytogenes
- Jin Hee Lee Hyun Joo Yoon Sun Ah Lee Hee Young Lee Yo Han Yoon
- 한국축산식품학회
- Food Science of Animal Resources
- Korean Journal for Food Science of Animal Resources 제33권 제4호
- 등재여부 : KCI등재
- 2013.08
- 481 - 486 (6 pages)
This study evaluates the effects of fat contents on the thermal resistance, antibiotic sensitivity, and Caco-2 cell invasion of Listeria monocytogenes. Ten strain mixture of L. monocytogenes in milk (0, 1, and 4% fat) and pork sausage patties (10, 20, and 30% fat) were exposed to 63oC. To evaluate effects of fat on the antibiotic sensitivity of L. monocytogenes, the L. monocytogenes strains NCCP10811 (most antibiotic resistant to streptomycin) and NCCP10943 (most antibiotic sensitive to streptomycin) were exposed to different fat contents in milk and pork sausage patties, and L. monocytogenes from the foods were used for antibiotic sensitivity assays. The most invasive L. monocytogenes strains (NCCP10943) was exposed to different fat contents in milk or pork sausage patties, and L. monocytogenes from the foods were used for the Caco-2 cell invasion assays. The reductions of L. monocytogenes populations were not generally influenced by fat contents. The L. monocytogenes subjected to milk fat had increased sensitivities (p