OMA Protocol Review: OMAMAN-56 Sulfites in Shrimp

(50- 300

5 Day2/

280

82

-60.2

10.2

3.6

Analyst 2

mg/kg range)

y = 0.8201x + 15.347 R² = 0.99457 0 100 200 300 400 0 50 100 150 200 250 300 350 400 Biofish results (mg/kg) OMA results (mg/kg) RAW SHRIMP HEAD OFF

Figure 9. Graph of mean Biofish results vs OMA results for raw shrimp head off fortified with sodium metabisulfite.

Table 7. Method developer results for raw shrimp head on fortified with sodium metabisulfite Level Metho d N Day/Anal yst Result (mg/kg ) Accuracy (%) (mean Biofish /mean OMA )* 100 Bias Biofish mean Biofish - mean OMA ) Sr RSDr (%) [s r /mean cand ] x 100 Low level OMA 3 Day 1 16 - - 3.1 18.7 BIOFIS H 5 Day 1/ Analyst 1 23 138 6.3 1.7 7.4

(30- 150

5 Day 2/

21

130

4.9

1.6

7.8

Analyst 2

mg/kg range)

Mediu m level 1

OMA 3 Day 1

50

-

-

2.1

4.2

BIOFIS H

5 Day 1/

49

99

-0.5

2.3

4.6

Analyst 1

(30- 150

5 Day 2/

53

108

3.7

2.4

4.5

Analyst 2

mg/kg range)

Mediu m level 2

OMA 3 Day 1

87

-

-

3.8

4.3

BIOFIS H (50- 300 mg/kg

5 Day 1/

91

104

3.7

2.2

2.5

Analyst 1

5 Day 2/

90

103

2.9

1.8

2.0

Analyst 2

20