Trial of ferrous glycine sulphate in the fortification of common salt with iron

Abstract

Ferrous glycine sulphate, an organic complex of glycine and ferrous sulphate, was tested as a source of iron to produce iron fortified salt. The dry mixing was found superior to the spray mixing technique. The fortified salt retained the colour of common salt. The iron distribution was uniform, approximately 1000 ± 50 ppm. The iron stability of the fortified salt during long storage (1 year) was satisfactory and the iron was available in the ferrous form. The available iron from the fortified salt, measured by the in vitro method, was 70% which was 3 times higher than ferrous sulphate fortified salt. The acceptability of the fortified salt was satisfactory. Various food items prepared using the fortified salt were indistinguishable from those containing unfortified salt in colour, taste, flavour or texture. Factory production was smooth. The chemical cost, of iron fortification was the same as that of the earlier formulations of iron fortified salt.