Sheela Mary M
Bishop Heber College,
Tiruchirappalli-620017, Tamilnadu
India
Research Article
Pervasiveness of Listeria monocytogenes in Milk and Dairy Products
Author(s): Sheela Mary M and Shrinithivihahshini NDSheela Mary M and Shrinithivihahshini ND
The study was carried out in milk and dairy products from Tiruchirappalli city, Tamil Nadu, India, to determine the incidence of Listeria monocytogenes. A total of 415 milk and dairy products were studied and L. monocytogenes were isolated from 219 (52.7%) samples. Among the positive samples, the raw milk and flavored milk were 100% contaminated by L. monocytogenes followed by branded milk (65.9%), cheese (62.5%), ice-cream (49.2%), milk powder (26.6%), milk sweets (20%), ghee and paneer (13.3%) and yoghurt (6.6%). Conversely, curd and butter were free from L. monocytogenes. In this study, the 23 isolates were identified through biochemical test, among the 23 isolates only 14 isolates were further confirmed by the detection of phosphatidylinositol phospholipase C gene (plcA) of L. monocytogenes through polymerase chain reaction. From the re.. View More»
