Research Article
Predicting the Stability of Double Fortified Salt by Determining the Coating Quality of the Encapsulated Iron Premix
Table 3
Comparison of encapsulated premix surface properties, iron release, and qualitative iron colour test in the premix and double fortified samples.
| | Encapsulated premix surface properties | | Sample | Surface | Shape | Elemental abundances (%) | Colour test |
| | Premix-1 | Smooth | Cylindrical | C, Ti, Mg | No | | Premix-2 | Rough | Irregular | C, Ti, Fe | No | | Premix-3 | Rough | Round | Ti, C, Fe Mg, | Yes | | Premix-4 | Smooth | Cylindrical | C, Ti, Fe, Mg | No |
| | DFS colour test | | Sample | No pretreatment | Acid hydrolysis (effect of acid) | Fat removal (effect of solvent) | Physical abrasion (grinding) |
| | DFS-1 | No | No | No | Yes | | DFS-2 | No | Yes | No | No | | DFS-3 | Yes | Yes | Yes | Yes | | DFS-4 | No | Slight | No | Yes |
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