Studies on the Growth Temperature of Psychrotrophic Bacteria : Growth at Various Incubation Temperatures of Psychrotrophic Pseudomonas Originated from Raw Milk and Raw Meat

Incidence of psychrotrophic lipolytic bacteria in cow’s raw milk

The contamination of bulk samples of cow’s raw milk (n = 491) by psychrotrophic lipolytic bacteria (PLiBC), total count of psychrotrophic bacteria (PBC) and mesophilic bacteria (TBC) was monitored for two years on eight dairy farms and the correlations among these groups of bacteria were analysed. An increase in TBC, PBC and PLiBC and in the values of free fatty acids (FFA) was tested experimen...

Characterisation of Antibiotic-resistant Psychrotrophic Bacteria in Raw Milk

Effect of refrigeration on prevalence and enumeration of psychrotrophic bacteria in raw milk

Fifty milk samples were assessed for prevalence and enumeration of coliform bacteria under refrigeration. Refrigeration exerted profound effect conferring diminished growth of Citrobacter, Enterobacter and Serratia, however, itfavoured Salmonella, E.coli and Klebsiella on other hand. Among them, Salmonella appeared with highest load both in pre-refrigerated (23%) as well as post-refrigerated (4...

Hydrolytic potential of a psychrotrophic Pseudomonas isolated from refrigerated raw milk

The production of extracellular hydrolases by a psychrotrophic bacterium isolated from refrigerated raw milk, and identified as a Pseudomonas sp. belonging to the Pseudomonas jenssenii group, was studied. This bacterium produced proteolytic and lipolytic enzymes in all media investigated (skim milk, cheese whey, casein broth, and tryptone soy broth). High levels of α-glucosidase were produced i...

Temperature adaptability of psychrotrophic Pseudomonas.

The rate of oxidation of glucose and alanine at low temperatures by washed cells of psychrotrophic strains of Pseudomonas is related to growth temperature.