OMB Meeting Book_9-11-14
4 - Homogeneity tests for MLT samples
• The homogeneity of SPIFAN samples was done/confirmed by SPIFAN/AOAC • The homogeneity of IDF/ISO samples was done/confirmed by SD (Parameter: Fat %)
Analyte
Values from recipe or declaration (g/100g)
Average value homogeneity test (g/100g)
Repeatability of the Method (r %)
SD( R ) used for the homogeneity
SD( R ) used for the homogeneity test
Homogeneity test conclusion (Classic)
SD( R ) used for the P-test
test (2r% method)
Full cream milk powder Full cream liquid milk
26.30
26.27
1.5 1.5 1.5 1.5 4.0 1.5
3.0 3.0 3.0 3.0 8.0 3.0
0.788 : Sufficient homogeneous 0.107 : Sufficient homogeneous 1.058 : Sufficient homogeneous 2.488 : Sufficient homogeneous 1.063 : Sufficient homogeneous 0.770 : Sufficient homogeneous
3.50
3.55
Full cream
35.00 82.00 12.70 26.00
35.27 82.93 13.29 25.67
Butter
Cheese
Infant Formula
Full creammilk powder
Full cream liquid milk
Sample name
Full cream
Butter
Cheese
Infant Formula
Duplicate
A
B
A
B
A
B
A
B
A
B
A
B
1 2 3 4 5 6 7 8 9
26.34 26.31 26.29 26.34 26.31 26.38 26.32 26.31 26.29 26.20
26.27 26.22 26.24 26.28 26.18 26.22 26.17 26.27 26.23 26.21
3.54 3.58 3.55 3.56 3.54 3.58 3.53 3.52 3.53 3.53
3.61 3.56 3.54 3.57 3.55 3.60 3.56 3.53 3.52 3.52
35.25 35.12 35.01 35.24 35.29 35.04 35.39 35.51 35.55 35.38
35.28 35.02 35.09 35.33 35.28 35.16 35.52 35.36 35.31 35.36
82.99 82.76 82.67 82.55 82.84 83.70 83.04 82.68 83.14 82.98
83.07 82.65 82.63 82.76 83.02 83.70 82.83 83.10 82.67 82.82
13.55 13.27 13.09 13.01 13.28 13.17 13.57 13.37 13.18 13.18
13.75 13.47 13.20 12.86 13.21 13.10 13.63 13.44 13.25 13.16
25.77 25.85 25.85 25.71 25.77 25.66 25.55 25.34 25.65 25.64
25.90 25.76 25.80 25.65 25.66 25.50 25.71 25.34 25.72 25.60
For each sample n=20
10
Average g/100g
26.27
3.55
35.27
82.93
13.29
25.67
Min value Max value Mean value Median value
26.17 26.38 26.27 26.28
3.52 3.61 3.55 3.55 0.03 0.74
35.01 35.55 35.27 35.29
82.55 83.70 82.93 82.84
12.86 13.75 13.29 13.23
25.34 25.90 25.67 25.69
SD
0.06 0.22
0.16 0.46
0.32 0.38
0.22 1.69
0.15 0.59
RSD %
: Sufficient homogeneous
: Sufficient homogeneous
: Sufficient homogeneous
: Sufficient homogeneous
: Sufficient homogeneous
: Sufficient homogeneous
Status
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