Review Book

3/12/2020

GENE ‐ UP SLM – AOAC OMA Collaborative Results  Data analyzed according to AOAC Appendix J Guidelines  POD, LPOD, dLPOD with 95% CI  Repeatability, reproducibility  False positive & false negative rate  No statistically significant difference between the candidate and reference method based on dLPOD C analysis:  ‐ 0.02 ( ‐ 0.15, 0.12)  No statistically significant difference between presumptive and confirmed results of the candidate method based on dLPOD CP analysis: 0.1 ( ‐ 0.03, 0.04)  2.2% false positive and 0.9% false negative rate  Repeatability and reproducibility values between 0.00 and 0.50  It is recommended that the GENE ‐ UP ® Salmonella method be adopted as Official First Action status for the detection of Salmonella species in a broad range of foods and select environmental surfaces

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Microbial Screening for Salmonella spp.  Screening method From AOAC Community on Color Additives

 STEP 1: Test product AS IS initially to determine test assay compatibility  STEP 2: Spike each product with low level (<10 CFU/test portion) of Salmonella  STEP 3: Evaluate multiple dilutions, enrichment media, and enrichment times  Enrichment: 1:10 or 1:20 dilution of product, buffered peptone water, 35  C, 18 ‐ 24 h incubation of 25 g samples  Detection using GENE ‐ UP®  Ten color additive products tested  All products demonstrated acceptable organism recovery and detection of target organism  Next step  ‐ addition of the color additive turmeric to existing AOAC PTM 121802 through matrix extension

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