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. 2014 Jun 20;8:37. doi: 10.1186/1752-153X-8-37

Table 4.

Assay of tylosin and josamycin in food samples using the proposed and reference methods

Method TS
 JM
 TS
 JM
Prop. Ref. Prop. Ref. Prop. Ref. Prop. Ref.
Sample type
 Chicken muscle
 Chicken liver
Mean recovery X¯a
 101.10
 100.62
 101.13
 100.86
 101.93
 99.13
 99.97
 98.47
± S.D.
 0.72
 0.82
 2.71
 2.17
 2.01
 2.29
 3.16
 2.84
Variance
 0.52
 0.67
 7.34
 4.7
 4.04
 5.24
 9.96
 8.04
Students t-valueb
 0.79
 0.13
 1.59
 0.61
Variance ratio F-valueb
 1.29
 1.55
 1.30
 1.24
Sample type
 Bovine muscle
 Bovine liver
Mean recovery X¯a
 102.60
 100.53
 97.80
 96.87
 99.43
 97.53
 98.40
 98.20
± S.D.
 1.05
 2.63
 1.57
 0.70
 2.49
 1.30
 1.65
 2.36
Variance
 1.11
 6.94
 2.47
 0.49
 6.20
 1.69
 2.71
 5.56
Students t-valueb
 1.26
 0.94
 1.17
 0.12
Variance ratio F-valueb
 6.25
 5.01
 3.66
 2.05
Sample type
 Milk
 Eggs
Mean recovery X¯a
 99.53
 98.87
 99.40
 98.93
 100.93
 100.60
 100.80
 100.70
± S.D.
 2.35
 2.81
 2.61
 2.58
 3.02
 2.43
 2.72
 1.87
Variance
 5.52
 7.89
 6.84
 6.65
 9.14
 5.92
 7.41
 3.51
Students t-valueb
 0.31
 0.22
 0.15
 0.05
Variance ratio F-valueb
 1.43
 1.03
 1.54
 2.11
Sample type
 Baby food
 Baby formulae
Mean recovery X¯a
 100.03
 99.70
 99.67
 98.03
 98.00
 97.03
 98.80
 97.37
± S.D.
 2.51
 1.90
 3.07
 1.98
 2.85
 1.91
 1.35
 1.80
Variance
 6.30
 3.61
 9.40
 3.94
 8.13
 3.64
 1.83
 3.24
Students t-valueb
 0.18
 0.77
 0.49
 1.10
Variance ratio F-valueb 1.75 2.38 2.23 1.77

aNumber of experiments = 3.

bTabulated t- and F-values at p = 0.05 are: 2.78 and 19.00, respectively.