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E579: Ferrous gluconate

Other additives

What it does

Gives a black colour to ripe olives; an iron source.

What it is made from

Made from gluconic acid and iron.

Allergies and diets

No allergy or diet concern is recorded for this additive. That is not a guarantee: the source can differ between makers, so check the label.

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General information, not medical advice. Sources differ between manufacturers: check the label or ask the maker.

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