Table 3

Experimental values obtained in the recovery test of vitamin B₁, B₆, B₂ and C by HPLC, fluorescence and titration, respectively.

[B₁] (μg/mL)

Mass found (%) ± RSD

[B₆] (μg/mL)

Mass found (%) ± RSD

[B₂] (μg/mL)

Mass found ± RSD (%)

[C] (mg)

Mass found (%) ± RSD

20

98.6 ± 3.05

30

99.2 ± 1.26

2

98.7 ± 1.35

50

98.7 ± 0.81

30

100.7 ± 2.21

45

100.6 ± 1.97

3

100.7 ± 1.22

80

99.2 ± 1.42

40

98.2 ± 3.82

60

99.8 ± 2.45

3

100.8 ± 1.13

100

98.9 ± 1.19

50

100.2 ± 0.90

75

99.8 ± 1.13

4

100.0 ± 1.27

130

100.0 ± 1.01

60

99.6 ± 0.69

90

99.9 ± 0.58

5

99.6 ± 0.89

150

99.5 ± 0.89

* Each value represents the mean of 3 analyses.

Ribeiro et al. Nutrition Journal 2011 10:47   doi:10.1186/1475-2891-10-47