Skip to main content
. Author manuscript; available in PMC: 2008 Nov 24.
Published in final edited form as: J AOAC Int. 2008;91(3):511–523.

Table 2.

Collaborative study results for determination of aflatoxinsa and ochratoxin A in blind duplicates of spiked powdered ginseng samples

Lab No. AFB1
 AFB2
 AFG1
 AFG2
 AF
 OTA
0 μg/kg 0 μg/kg 0 μg/kg 0 μg/kg 0 μg/kg 0 μg/kg
1 NDb ND ND ND ND ND ND ND ND ND ND ND
2 0.45 0.45 0.15 0.15 0.08 0.08 0.11 0.11 ND ND ND ND
4 ND ND ND ND ND ND ND ND ND ND ND ND
5 ND ND ND ND ND ND ND ND ND ND ND ND
6 ND ND ND ND ND ND ND ND ND ND ND ND
10 ND ND ND ND ND ND ND ND ND ND 0.38 0.14
11 ND ND ND ND ND ND ND ND ND ND ND ND
12 ND ND ND ND ND ND ND ND ND ND ND ND
13 ND ND ND ND ND ND ND ND ND ND ND ND
14 ND ND ND ND ND ND ND ND ND ND ND ND
15
 ND
 ND
 ND
 ND
 ND
 ND
 ND
 ND
 ND
 ND
 ND
 ND
 
 1 μg/kg
 0.25 μg/kg
 0.5 μg/kg
 0.25 μg/kg
 2 μg/kg
 1 μg/kg
1 0.73 0.75 0.20 0.21 0.42 0.39 0.17 0.19 1.52 1.53 1.01 0.86
2 0.81c 0.45c 0.22 0.15 0.14 0.08 0.21c 0.11c 1.38c 0.80c 0.90 1.10
4 0.78 0.76 0.23 0.22 0.41 0.41 0.22 0.22 1.61 1.64 1.00c 0.48c
5 0.63 0.65 0.18 0.19 0.25 0.25 0.18 0.18 1.24 1.26 0.92 0.87
6 0.56 0.59 0.17 0.19 0.24 0.26 0.15 0.17 1.12 1.21 0.84 0.84
10 0.99 0.95 0.27 0.25 0.51 0.43 0.24 0.22 2.00 1.85 0.99 0.99
11 0.68 0.66 0.27 0.21 0.26 0.30 0.20 0.24 1.40 1.41 0.96 0.89
12 0.73c 0.88c 0.19 0.22 0.40 0.45 0.18 0.20 1.75c 1.52c 0.91 0.96
13 0.77 0.85 0.21 0.21 0.38 0.41 0.19 0.19 1.66 1.55 0.98 0.96
14 0.89 0.87 0.24 0.23 0.44 0.43 0.22 0.22 1.80 1.75 0.93 0.88
15
 0.78
 0.77
 0.22
 0.21
 0.42
 0.37
 0.22
 0.21
 1.64
 1.57
 0.76
 0.75
 
 2 μg/kg
 0.5 μg/kg
 1 μg/kg
 0.5 μg/kg
 4 μg/kg
 2 μg/kg
1 1.33 1.40 0.39 0.38 0.78 0.81 0.36 0.37 2.86 2.96 1.72 1.77
2 0.92 0.91 0.31 0.36 0.34 0.35 0.32 0.36 1.89 1.97 1.84 1.93
4 1.67 1.27 0.47 0.39 0.88 0.65 0.46c 0.38c 2.69 3.47 1.96 1.97
5 1.26 1.26 0.36 0.37 0.52 0.54 0.33 0.35 2.51 2.47 1.79 1.84
6 1.04 1.40 0.34 0.39 0.46 0.65 0.33 0.34 2.78 2.16 1.85 1.77
10 1.96 1.94 0.52d 0.52d 0.98 0.95 0.44 0.46 3.91 3.86 1.99 2.03
11 0.77 1.06 0.34 0.37 0.40 0.41 0.23 0.21 1.74 2.05 1.66 1.79
12 1.51 1.48 0.39 0.38 0.79 0.72 0.36 0.37 2.95 3.05 1.84 1.89
13 1.51 1.55 0.41 0.41 0.73 0.74 0.39 0.39 3.09 3.04 1.90 1.85
14 1.39 1.55 0.38 0.41 0.70 0.76 0.36 0.37 2.83 3.09 1.71 1.75
15
 1.44
 1.42
 0.42
 0.41
 0.79
 0.78
 0.43
 0.43
 3.08
 3.04
 1.61
 1.62
 
 4 μg/kg
 1 μg/kg
 2 μg/kg
 1 μg/kg
 8 μg/kg
 4 μg/kg
1 2.92 2.92 0.91 0.80 1.62 1.61 0.81 0.76 6.09 6.26 3.05 3.11
2 1.80 1.53 0.55 0.51 0.73 0.59 0.59 0.54 3.68 3.17 3.65 3.30
4 3.02 3.61 0.76 0.84 1.30 1.55 0.71 0.79 5.30 6.19 3.39 3.61
5 2.56 2.66 0.73 0.75 1.20 1.20 0.71 0.70 5.20 5.31 3.40 3.38
6 2.70 3.01 0.78 0.84 1.33 1.50 0.73 0.77 6.13 5.54 3.47 3.59
10 3.77 3.32 1.00 0.86 1.82 1.69 0.91 0.80 7.50 6.67 3.93 3.37
11 1.90 2.08 0.70 0.69 0.80 1.04 0.50 0.59 3.90 4.39 3.28 3.34
12 3.17 3.03 0.85 0.81 1.62 1.57 0.75 0.74 6.16 6.39 3.51 3.54
13 2.99 2.95 0.81 0.80 1.49 1.50 0.78 0.76 6.07 6.01 3.49 3.51
14 2.90 2.76 0.78 0.75 1.46 1.38 0.68 0.69 5.82 5.58 3.31 3.25
15
 3.01
 3.17
 0.86
 0.87
 1.61
 1.66
 0.89
 0.90
 6.37
 6.59
 3.36
 3.43
 
 8 μg/kg
 2 μg/kg
 4 μg/kg
 2 μg/kg
 16 μg/kg
 8 μg/kg
1 5.81 5.26 1.60 1.45 3.03 2.73 1.49 1.38 11.92 10.82 5.86 5.79
2 3.02 3.34 1.15c 0.483c 1.33 1.53 1.13 0.87 6.63 6.22 7.62 7.86
4 5.99 5.93 1.67 1.65 3.11 3.09 1.54 1.60 12.27 12.32 7.00 6.98
5 5.33 5.18 1.51 1.48 2.49 2.25 1.42 1.34 10.25 10.75 6.89 7.05
6 4.44c 6.04c 1.46 1.69 1.95c 3.02c 1.43 1.54 12.3c 9.30c 7.15 7.17
10 7.15 6.71 1.87 1.78 3.41 3.39 1.74 1.70 14.17 13.58 8.23 7.71
11 4.52 4.25 1.47 1.43 2.07 1.45 1.31 0.95 9.36 8.08 6.94 6.29
12 6.61 6.37 1.77 1.69 3.37 3.15 1.59 1.48 12.69 13.35 7.16 7.21
13 5.81 5.94 1.67 1.71 3.02 3.16 1.56 1.48 12.06 12.29 7.01 7.19
14 5.64 5.41 1.55 1.47 2.82 2.68 1.42 1.32 11.42 10.88 6.63 5.90
15 6.08 6.37 1.74 1.80 3.30 3.43 1.79 1.87 12.91 13.47 7.06 7.17
a

AF = Sum of AFB1, AFB21, AFG1, and AFG2.

b

ND = None detected.

c

Cochran outlier.

d

Grubbs outlier.