AOAC ERP MICRO AUGUST 2018

B ird et al .: J ournal of AOAC I nternational V ol . 100, N o . 1, 2017  87

Table 2016.07C. Comparative results for the detection of Listeria in 125 g deli turkey test portions by the 3M MDA 2– Listeria method versus USDA/FSIS MLG 8.09 in the collaborative study Uninoculated control

CP a

CC b

C c

R d

C vs R

Matrix/ inoculation level

N e

x f

Statistic

POD CP

POD CC

POD C

POD R

dLPOD Cvs R

dLPOD CP vs CC

Lab

N x

N x

N x

Deli turkey 1 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 2 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 3 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 4 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 5 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 6 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 7 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 8 g NA NA NA NA NA NA NA NA NA NA NA NA 9 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 10 h NA NA NA NA NA NA NA NA NA NA NA NA 11 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 12 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 13 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00

0.00 0.00 0.00 0.00 0.00 0.00 0.00

0.00 0.00 0.00 0.00 0.00 0.00 0.00

NA

NA

0.00

0.00

NA

NA

0.00 0.00 0.00

0.00 0.00 0.00

POD CC

POD C

POD R

dLPOD C vs R

dLPOD CP vs CC

Labs

POD CP

N x

N x

N x

N x

All 132 0 0.00 132 0 0.00 132 0 0.00 132 0 0.00

0.00

0.00

Estimate

 LCL i  UCL j

0.00 0.03 0.00 0.00 0.16 0.00 0.00 0.16 0.00 0.00 0.23

0.00 0.03 0.00 0.00 0.16 0.00 0.00 0.16 0.00 0.00 0.23

0.00 0.03 0.00 0.00 0.16 0.00 0.00 0.16 0.00 0.00 0.23

0.00 0.03 0.00 0.00 0.16 0.00 0.00 0.16 0.00 0.00 0.23

–0.03

–0.03

0.03

0.03

s r

 LCL  UCL

k

s L

 LCL  UCL

s R

 UCL  LCL

l

1.0000

1.0000

1.0000

1.0000

P T

Low inoculum level Deli turkey 1 12 7 0.58 12 7 0.58 12 7 0.58 12 6 0.50 2 12 7 0.58 12 6 0.50 12 6 0.50 12 5 0.42 3 12 4 0.33 12 4 0.33 12 4 0.33 12 5 0.42 4 12 5 0.42 12 5 0.42 12 5 0.42 12 4 0.33 5 12 6 0.50 12 6 0.50 12 6 0.50 12 6 0.50 6 12 7 0.58 12 7 0.58 12 7 0.58 12 6 0.50 7 12 7 0.58 12 7 0.58 12 7 0.58 12 6 0.50 8a NA NA NA NA NA NA NA NA NA NA NA NA 9 12 8 0.66 12 8 0.66 12 8 0.66 12 6 0.50 10a NA NA NA NA NA NA NA NA NA NA NA NA 11 12 7 0.58 12 6 0.50 12 6 0.50 12 7 0.58 ERP Use Only 0.08 0.08 -0.08 0.08 0.00 0.08 0.08 NA 0.16 NA -0.08

0.00 0.08 0.00 0.00 0.00 0.00 0.00

NA

0.00

NA

0.08

MPN/ Test Portion

12 12 5 0.42 12 5 0.42 12 5 0.42 12 4 0.33 13 12 5 0.42 12 5 0.42 12 5 0.42 12 5 0.42 132 68 0.52 132 66 0.50 132 66 0.50 132 60 0.45

0.08 0.00 0.04 -0.08 0.17

0.00 0.00 0.02 -0.11 0.14

Estimate 0.63 All

 LCL

0.49

0.43 0.60 0.51

0.41 0.59 0.51

0.41 0.59 0.51

0.37 0.54 0.51

 UCL 0.80

b

s r