Table 2 Stability of folic acid and iodine in the optimized spray solution.

From: Folic acid fortification of double fortified salt

Types of solution

Folic acid

Iodine

25 °C

35 °C

45 °C

25 °C

35 °C

45 °C

0.5% FA

82.4 ± 3.4

82.0 ± 1.9

68.8 ± 6.7

   

1% FA

92.1 ± 2.3

84.4 ± 6.9

71.5 ± 3.4

   

0.5% FA + 2% I

91.1 ± 2.1

88.4 ± 4.9

74.4 ± 2.2

94.7 ± 4.7

92.7 ± 0.6

89.4 ± 4.6

1% FA + 2% I

88.7 ± 4.7

89.3 ± 2.6

80.2 ± 5.2

96.5 ± 4.0

94.4 ± 1.0

88.6 ± 2.7

2% I

   

100.0 ± 1.0

96.5 ± 5.1

93.1 ± 1.2

  1. FA = folic acid, I = iodine; the pH of the solutions were adjusted to pH 9.
Back to article page