Inhibitory effect of liposome-entrapped lemongrass oil on the growth of Listeria monocytogenes in cheese.
Listeria monocytogenes infection in dairy products is of mounting public concern. To inhibit bacterial growth, we engineered stimuli-responsive liposomes containing lemongrass oil for this study. The controlled release of liposome-entrapped lemongrass oil is triggered by listerolysin O, secreted by L. monocytogenes. We investigated the antibiotic activities of lemongrass oil liposomes against L. monocytogenes in cheese. We also assessed their possible effects on the quality of the cheese. Liposomes containing lemongrass oil (5.0mg/mL) presented the optimal polydispersity index (0.246), zeta-potential (-58.9mV) and entrapment efficiency (25.7%). The liposomes displayed satisfactory antibiotic activity against L. monocytogenes in cheese over the storage period at 4°C. We observed no effects on the physical and sensory properties of the cheese after the liposome treatment.
School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
H Y
HY
Cui
School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
J
J
Wu
School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P. R. China. Electronic address: linl@ujs.edu.cn.
L
L
Lin
D000818:Animals; D001427:Bacterial Toxins; D002611:Cheese / Q000382:microbiology*; D005516:Food Microbiology; D006360:Heat-Shock Proteins / Q000378:metabolism; D006460:Hemolysin Proteins / Q000378:metabolism; D008081:Liposomes; D008089:Listeria monocytogenes / Q000187:drug effects* / Q000254:growth & development* / Q000502:physiology; D010938:Plant Oils / Q000008:administration & dosage*; D013729:Terpenes / Q000008:administration & dosage*
D001427:Bacterial Toxins; D006360:Heat-Shock Proteins; D006460:Hemolysin Proteins; D008081:Liposomes; D010938:Plant Oils; D013729:Terpenes; C052901:lemongrass oil; C038705:hlyA protein, Listeria monocytogenes
Listeria monocytogenes; cheese; lemongrass oil liposome; listerolysin O