Aflatoxigenic Fungi and Aflatoxins in Portuguese Almonds
Table 4
Performance and precision of AFs extraction method, for each AF.
B1
B2
G1
G2
6βg/kg
2βg/kg
1.5βg/kg
0.5βg/kg
6βg/kg
2βg/kg
1.5βg/kg
0.5βg/kg
Day 1
βMean recovery (%)
90.6
92.1
94.7
102.7
82.2
104.0
95.6
104.8
βSD
5.35
0.66
4.22
9.5
5.58
6.53
1.91
8.57
β (%)
5.9
0.7
4.5
9.3
6.8
6.3
2.0
8.2
Day 2
βMean recovery (%)
96.7
101.5
98.0
91.1
89.9
101.9
90.1
106.4
βSD
5.0
11.5
2.1
5.5
1.4
2.9
4.7
4.9
β (%)
5.1
11.3
2.2
6.0
1.5
2.8
5.3
4.6
Recovery (%)
93.7
96.8
96.4
96.9
86.0
103.0
92.9
105.6
4.3
6.6
2.3
8.2
5.4
1.5
3.9
1.1
(%)
4.6
6.9
2.4
8.5
6.3
1.4
4.2
1.1
LOD (g/kg)
0.266
0.057
0.461
0.119
LOQ (g/kg)
0.768
0.166
1.451
0.350
Recommended rangeb
βRecovery (%)
70β110
50β120
70β110
50β120
β (%)
22
27
28
33
22
27
28
33
β (%)
34
41
42
47
34
41
42
47
aBecause there are only two values for mean recovery to calculate intermediate precision, mean deviation (MD), and relative mean deviation (RMD) substitute the commonly used standard deviation (SD) and relative standard deviation (RSD).
bAs recommended by the Codex Committee on Contaminants in Food [23], based on the equations determined by Thompson [24] and Horwitz and Albert [25] and adopted by the European Regulation no. 178/2010.
