Page 213 - Analytical method for food addtives

E297: Fumaric acid and its salts 141

Table 10.3 Performance characteristics for fumaric acid in collaborative trial prepared
apple juice samples 1
Sample A B C D

Analyte Fumaric acid Fumaric acid Fumaric acid Fumaric acid
No. of laboratories 9 9 9 9
Units mg/100g mg/100g mg/100g g/100g
Mean value 0.856 1.368 0.384 0.879
SD 0.175 0.219 0.079 0.161
Coefficient of Variation CV 20.5 % 16.0 % 20.5 % 18.4 %
Intralaboratory SD (estimate) 0.084
Intralaboratory CV (estimate) 9.7 %

Table 10.4 Performance characteristics for fumaric acid in lager beers 13
Sample A B C D

Analyte Fumaric acid Fumaric acid Fumaric acid Fumaric acid
No. of determinations 6 6 6 6
Units mg/L mg/L mg/L mg/L
Mean value 42 41 63 29
±SD 3 4 4 4