Microbiology of food & animal feeding stuffs. Polymerase chain reaction (PCR) for the detection of food-borne pathogens. Requirements for sample preparation for qualitative detection Food products, Animal feed, Microbiology, Microbiological analysis, Pathogens, Microorganisms, Food testing, Biochemical methods of analysis, Enzymes, Nucleic acids, Deoxyribonucleic acid, Specimen preparation