Fortified atta in India carries three required nutrients: iron, folic acid and vitamin B12, each within a range fixed by regulation rather than chosen by the miller. Iron runs at 28 to 42.5 mg per kilogram, folic acid at 75 to 125 micrograms per kilogram, and vitamin B12 at 0.75 to 1.25 micrograms per kilogram.
Those ranges are public, specific and rarely quoted, which is why most explanations of fortified atta stop at naming the nutrients. The levels are set per kilogram, the permitted chemical forms are named individually, and one permitted iron form is dosed at half the rate of the others.
What the 2018 fortification regulations specify
Three nutrients, in specified quantities. The Food Safety and Standards (Fortification of Foods) Regulations, 2018 state that atta, when fortified, shall contain added iron, folic acid and vitamin B12 at the levels set out in their schedule.
| Nutrient | Level per kilogram | Permitted forms |
|---|---|---|
| Iron | 28 mg to 42.5 mg | Ferrous citrate, ferrous lactate, ferrous sulphate, ferric pyrophosphate, electrolytic iron, ferrous fumarate or ferrous bisglycinate |
| Iron, alternative | 14 mg to 21.25 mg | Sodium iron (III) EDTA, known as sodium feredetate |
| Folic acid | 75 μg to 125 μg | Folic acid |
| Vitamin B12 | 0.75 μg to 1.25 μg | Cyanocobalamin or hydroxocobalamin |
The word "when" is doing quiet work in that provision. Fortification of open-market atta is not required, but a miller who chooses to fortify must hit these levels, and must not fall below the minimum specified.
Why is one iron form dosed at half the rate?
Because absorption differs, and the regulation adjusts for it explicitly. The higher 28 to 42.5 mg range carries a footnote in the schedule stating that it is added at a higher level to account for less bioavailability.
Sodium feredetate, the EDTA-bound form, is absorbed more efficiently, so its permitted range is roughly half: 14 to 21.25 mg per kilogram. The intention is that a comparable amount of iron actually reaches the person eating the roti, not that one pack contains twice the nutrition of another.
This is the most useful thing to understand about fortification levels, and the easiest to misread. Two fortified attas can declare very different iron figures and be aiming at the same outcome, because the number on the pack describes what went in rather than what gets absorbed.
What can be added optionally?
Beyond the required three, the schedule permits a further set of micronutrients, singly or in combination.
| Optional nutrient | Level per kilogram |
|---|---|
| Zinc, as zinc sulphate | 10 mg to 15 mg |
| Vitamin A, as retinyl acetate or retinyl palmitate | 500 μg RE to 750 μg RE |
| Thiamine, vitamin B1 | 1 mg to 1.5 mg |
| Riboflavin, vitamin B2 | 1.25 mg to 1.75 mg |
| Niacin, vitamin B3 | 12.5 mg to 20 mg |
This is why two packs both labelled "fortified" can differ substantially. The required trio is common to both. Everything beyond it is a commercial choice, and the ingredients panel is the only place it is disclosed.
Which iron forms are not allowed?
Heme iron, in any form, in any article of food. The regulations state that wherever iron as Fe is used as a nutrient source, heme iron shall not be used.
Heme iron is the form found in animal tissue and is generally the better absorbed of the two dietary forms, so its exclusion is a deliberate choice rather than an oversight. Every permitted form in the list above is non-heme, which keeps fortified staples suitable for vegetarian diets across a country where that matters enormously.
It also explains why fortification leans on dose and chemical form to compensate. Working only with non-heme iron, the levers available are how much goes in and which compound is used.
Why is fortification done at the mill rather than at home?
Because the quantities are too small and too precise to handle any other way. Folic acid is permitted at 75 to 125 micrograms per kilogram, which is a fraction of a grain of salt distributed evenly through a kilogram of flour. Achieving that consistently needs industrial dosing and blending equipment.
It is also why fortification suits some staples and not others. A food has to be eaten regularly, in reasonably predictable quantities, by most of a population, and it has to pass through a small number of processing points where a micronutrient premix can be introduced. Wheat flour, rice, salt, oil and milk fit that description in India. Fresh produce does not.
The corollary is that fortification and sourcing are not competing answers to the same problem. One adjusts a staple at the point of processing, the other changes what goes into the mill in the first place. A household can reasonably prefer either, and our guide to is atta fortification mandatory in India covers why both sit legally on the same shelf.
How much does that actually amount to in a roti?
Less than the per-kilogram figures suggest, because nobody eats a kilogram of atta at a sitting. At the mid-point of the iron range, a kilogram of fortified atta carries roughly 35 mg of iron, so 100 grams of flour carries around 3.5 mg.
The ICMR-National Institute of Nutrition publishes dietary guidance for Indian requirements, and fortification is designed to close part of a gap rather than to supply a full day's intake from one food. Programme evidence bears this framing out: an early assessment of the Haryana wheat flour fortification programme examined delivery through state distribution, where reach across a population is the objective rather than a large per-serving dose.
That is the honest scale of the intervention. Small amounts, in a food eaten daily, across a very large number of people.
Does the wheat itself contribute iron and zinc?
Yes, and how much has changed. Research published in Scientific Reports analysing landmark high-yielding rice and wheat cultivars released across five decades in India found grain zinc in wheat fell by roughly 30 per cent and iron by roughly 19 per cent, alongside a mineral diet quality index down around 36 per cent for wheat between 1960 and 2010.
Naturally occurring minerals differ from added ones in an important respect: they are not a specification. They vary with variety, soil and season, which means they have to be measured rather than declared.
SatRas Sona Moti whole wheat atta takes the second route, with no synthetic iron, folic acid or B12 added and the grain's mineral content verified by an NABL-accredited laboratory. Which approach suits a given household is a genuine question rather than a settled one, and our guide to which atta brands are not fortified covers how to tell them apart on a shelf.
How do you read the numbers on a pack?
Four steps, using the table above as the reference.
- Find the declaration. A fortified pack must name the fortificant it contains.
- Check which iron form is listed. Sodium feredetate at a lower milligram figure is not less fortification than ferrous fumarate at a higher one.
- Look past the required trio. Zinc and the B vitamins are optional, so their presence is a real difference between products.
- Note the units. Iron and zinc appear in milligrams, folic acid and B12 in micrograms, and confusing the two changes the apparent quantity a thousandfold.
The SatRas FAQ page covers milling and sourcing questions that sit alongside these label questions.
What these numbers do not tell you
They describe what a miller added, not what your body absorbs. Absorption depends on the chemical form, on what else is in the meal, and on individual factors that no label can account for.
They also carry a specific caution the regulations attach directly. Every iron-fortified pack must state that people with thalassemia may take it under medical supervision, which is a reminder that added iron is not universally neutral.
Nothing here is personalised advice. Anyone managing anaemia, thalassemia, an iron disorder or pregnancy should decide with a doctor or a registered dietitian rather than from a nutrition panel. This guide is educational and is not medical advice.
Frequently asked questions
What is added to fortified atta in India?
Three nutrients are required: iron, folic acid and vitamin B12. Iron is permitted at 28 to 42.5 mg per kilogram, or 14 to 21.25 mg where sodium feredetate is used, folic acid at 75 to 125 micrograms per kilogram, and vitamin B12 at 0.75 to 1.25 micrograms per kilogram.
How much iron is in fortified atta?
Between 28 and 42.5 mg per kilogram for most permitted iron compounds, or 14 to 21.25 mg per kilogram where sodium iron EDTA is used. At the mid-point of the higher range, 100 grams of fortified atta carries roughly 3.5 mg of iron.
Why do some fortified attas list less iron than others?
Usually because a different iron compound was used. Sodium feredetate is absorbed more efficiently, so the regulations permit roughly half the milligram quantity. The schedule notes that the higher range applies to forms added at a higher level to account for less bioavailability.
Can fortified atta contain zinc and vitamins?
Yes, optionally. Beyond the required iron, folic acid and B12, the schedule permits zinc at 10 to 15 mg per kilogram, vitamin A at 500 to 750 micrograms RE, thiamine at 1 to 1.5 mg, riboflavin at 1.25 to 1.75 mg and niacin at 12.5 to 20 mg, singly or in combination.
Is the iron in fortified atta vegetarian?
Yes. The regulations prohibit heme iron, the form found in animal tissue, in any article of food. Every permitted iron compound for fortifying atta is non-heme, including ferrous sulphate, ferrous fumarate, ferric pyrophosphate, electrolytic iron and sodium feredetate, which keeps fortified staples suitable for vegetarian diets.
Does unfortified atta contain any iron at all?
Yes, naturally occurring iron from the grain itself, though the amount varies with variety, soil and season rather than being set to a specification. Research on Indian wheat cultivars found grain iron fell by roughly 19 per cent and zinc by roughly 30 per cent over five decades.
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