OMA Protocol Review: OMAMAN-56 Sulfites in Shrimp
Table 7. Recovery of SO 2 in boiled shrimp
Day 1 /Analyst 1 /Device 1
SO 2 theoretical addition (mg/kg)
BIOFISH 300 SUL Mean (mg/kg)
RSD r (%) SO 2 experimental addition (mg/kg)
Recovery (%)
S r
3.0
0.50 0.63 0.67 1.12 0.85 1.10 0.19 0.43 0.54 1.12 1.23 1.09 S r
16.7
0 5
6.79
9.3 5.9 7.5 4.4 4.8
76 83 80 82 80
3.79 8.34
11.34 14.98 19.45 22.90
10 15 20 30
11.98 16.45 19.90
BOILED SHRIMP
Day 2 /Analyst 2 /Device 2
SO 2 theoretical addition (mg/kg)
BIOFISH 300 SUL Mean (mg/kg)
RSD r (%) SO 2 experimental addition (mg/kg)
Recovery (%)
1.54 7.02
12.3
0 5
6.1 4.4 7.1 6.1 4.6
110 107
5.48
12.23 15.76 20.03 23.58
10 15 20 30
10.69 14.22 18.49 22.04
95 92 88
BOILED SHRIMP
Table 8. Recovery of SO 2 in raw shrimp
Day 1 /Analyst 1/ Device 1
SO2 theoretical addition (mg/kg)
BIOFISH 300 SUL Mean (mg/kg)
SO2 experimental addition (mg/kg)
Recovery (%)
RSD r (%)
S r
3.67 7.56
0.24 0.28 0.16 0.24 1.40 1.23 0.48 0.66 0.71 0.98 1.12 1.33 S r
6.5 3.4 1.7 1.5 6.8 5.6
0 5
78 85 86 85 80
3.89 8.54
12.21 16.59 20.72 23.67
10 15 20 25
12,.92 17.05 20.00
RAW HEAD OFF SHRIMP
Day 2 /Analyst 2/ Device 2
SO2 theoretical addition (mg/kg)
BIOFISH 300 SUL Mean (mg/kg)
RSD r (%)
SO2 experimental addition (mg/kg)
Recovery (%)
2.81 8.13
17.1
0 5
8.1 5.5 5.7 5.3 5.4
106 101
5.32
12.89 17.21 21.00 24.54
10 15 20 30
10.08 14.40 18.19 21.73
96 91 87
RAW HEAD OFF SHRIMP
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