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B
ird
et al
.:
J
ournal of
AOAC I
nternational
V
ol
.
99, N
o
.
3, 2016
5
Table 2015.13E. Log
10
total aerobic bacterial counts for raw easy-peel shrimp by 3M Petrifilm RAC Plate incubated at 35°C
vs FDA BAM Chapter 3 reference method
Laboratory
Low
Medium
High
Petrifilm RAC
a
FDA BAM
b
Petrifilm RAC
FDA BAM
Petrifilm RAC
FDA BAM
Log
10
CFU/g
Log
10
CFU/g
Log
10
CFU/g
Log
10
CFU/g
Log
10
CFU/g
Log
10
CFU/g
A
c
B
A
B
A
B
A
B
A
B
A
B
1
2.558 2.757 3.182 3.034 4.146 4.118 4.159 4.231 5.433 5.846 5.852 6.000
2
2.682 2.772 3.423 3.121 4.306 4.188 4.057 4.306 5.507 5.464 5.881 5.749
3
3.042 2.876 3.297 3.297 4.193 4.308 4.279 4.366 5.793 5.793 6.072 6.017
4
2.814 2.935 3.686 3.398 4.127 4.246 4.423 4.447 5.614 5.603 6.165 6.118
5
2.741 2.717 3.191 3.202 4.118 4.042 4.251 4.303 5.592 5.344 5.870 5.749
6
3.329 3.341 2.644 2.846 3.207
d
3.983 4.000 3.955 5.807 5.581 5.654 5.717
7
2.700 2.507 2.634 2.344 4.320 4.114 3.974 3.708 5.800 5.925 5.757 5.364
d
8
2.045 2.382 2.364 2.654 3.914 3.749 3.881 3.682 5.344 5.382 5.479 5.581
9
2.700 3.072 3.191 3.505 4.403 4.366 4.270 4.299 5.644 5.717 5.909 5.974
10
2.846 2.893 2.479
d
3.369 4.362 4.243 4.407 4.415 5.820 5.909 5.925 6.087
11
2.717 2.700 3.134 3.094 4.322 4.034 4.000 3.846 5.581 5.950 5.925 5.820
12
2.083 2.149 2.417 2.793 3.839 4.050 3.772 3.974 5.793 5.382 5.533 5.417
13
2.664 2.904 3.121 3.388 4.379 4.127 4.492 4.312 5.533 5.603 5.682 5.644
14
2.749 2.717 3.251 3.260 4.087 4.193 4.377 4.418 5.800 5.708 6.065 5.969
15
3.343 3.279 3.162 3.097 3.533 3.533 3.400 3.417 5.717 5.749 5.644 5.654
16
3.173 3.042 3.322 3.343 4.080 4.193 4.176 4.207 5.717 5.717 5.992 5.904
a
RAC = 3M Petrifilm Rapid Aerobic Count Plate method.
b
FDA BAM = FDA BAM Chapter 3 (Aerobic Plate Count) method.
c
A and B indicate duplicate test portions.
d
Cochran’s outlier.
Table 2015.13D. Log
10
total aerobic bacterial counts for raw easy-peel shrimp by 3M Petrifilm RAC Plate incubated at
32°C vs FDA BAM Chapter 3 reference method
Laboratory
Low
Medium
High
Petrifilm RAC
a
FDA BAM
b
Petrifilm RAC
FDA BAM
Petrifilm RAC
FDA BAM
Log
10
CFU/g
Log
10
CFU/g
Log
10
CFU/g
Log
10
CFU/g
Log
10
CFU/g
Log
10
CFU/g
A
c
B
A
B
A
B
A
B
A
B
A
B
1
3.000 3.065 3.182 3.034 4.389 4.785 4.159 4.231 5.344 5.558 5.852 6.000
2
2.864 2.858 3.423 3.121 4.288 4.238 4.057 4.306 5.344 5.207 5.881 5.749
3
3.176 2.950 3.297 3.297 4.210 4.373 4.279 4.366 5.558 5.479 6.072 6.017
4
2.964 3.000 3.686 3.398 4.156 4.292 4.423 4.447 5.664 5.479 6.165 6.118
5
2.779 2.717 3.191 3.202 4.114 4.072 4.251 4.303 5.258 5.004 5.870 5.749
6
3.236 3.153 2.644 2.846 3.764
d
4.623 4.000 3.955 5.004 5.281 5.654 5.717
7
3.179 3.127 2.634 2.344 4.009 4.477 3.974 3.708 5.603 5.644 5.757 5.364
d
8
2.700 2.786 2.364 2.654 3.969 3.925 3.881 3.682 5.344 5.382 5.479 5.581
9
3.114 3.490 3.191 3.505 4.403 4.366 4.270 4.299 5.827 5.833 5.909 5.974
10
3.176 3.212 2.479
d
3.369 4.439 4.439 4.407 4.415 5.914 6.005 5.925 6.087
11
2.876 2.876 3.134 3.094 4.388 4.108 4.000 3.846 5.664 5.893 5.925 5.820
12
2.624 2.807 2.417 2.793 4.199 4.127 3.772 3.974 5.624 5.581 5.533 5.417
13
3.050 3.042 3.121 3.388 4.083 4.193 4.492 4.312 5.507 5.664 5.682 5.644
14
2.479
d
3.026 3.251 3.260 4.316 4.412 4.377 4.418 5.833 5.624 6.065 5.969
15
2.303 2.258 3.162 3.097 4.455 4.512 3.400 3.417 5.682 5.749 5.644 5.654
16
3.246 3.256 3.322 3.343 4.057 4.226 4.176 4.207 5.493 5.558 5.992 5.904
a
RAC = 3M Petrifilm Rapid Aerobic Count Plate method.
b
FDA BAM = FDA BAM Chapter 3 (Aerobic Plate Count) method.
c
A and B are the indicated duplicate test portions.
d
Cochran’s outlier.
Candidates for 2016 Method of the Year
180