AOAC CASP Meeting - MYM 2020

Salmonella species • Straight rods, 0.7 – 1.5 x 2-5 μ m. • Facultative anaerobic, gram negative bacteria. • D-glucose and other carbohydrates are catabolized with the production of acid and usually gas. • Occur in humans, warm and cold blooded animals, food, and the environment. • Pathogenic for humans and many animal species. • Shown to survive well under dessication. • Causative agent of typhoid fever, enteric fevers, gastroenteritis, and septicemia.

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Definitions • POD, Probability of Detection.— The portion of positive analytical outcomes for a qualitative method for a given matrix at a given analyte level or concentration • dPOD CP – This difference in POD values between presumptive and confirmed results • LPOD – The POD value obtained from combining all valid collaborator data sets for a given matrix at a given analyte level or concentration • LCL, Lower confidence limit.— Calculated to determine 95% confidence interval of various POD values • UCL, Upper confidence limit.— Calculated to determine 95% confidence interval of various POD values • CFU, Colony forming unit.— Number of viable microorganisms, presented per a specific quantity. (ex. CFU/mL) • MPN, Most probable number.— Method used to estimate contamination levels

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