The True Nature of Tricalcium Phosphate Used as Food Additive (E341(iii)) - Archive ouverte HAL
Article Dans Une Revue Nanomaterials Année : 2023

The True Nature of Tricalcium Phosphate Used as Food Additive (E341(iii))

Résumé

Tricalcium phosphate (TCP) is a food additive, labeled E341(iii), used in powdered food preparation, such as baby formula. In the United States, calcium phosphate nano-objects were identified in baby formula extractions. Our goal is to determine whether the TCP food additive, as is used in Europe, can be classified as a nanomaterial. The physicochemical properties of TCP were characterized. Three different samples (from a chemical company and two manufacturers) were thoroughly characterized according to the recommendations of the European Food Safety Authority. A commercial TCP food additive was identified as actually being hydroxyapatite (HA). It presents itself in the form of particles of different shapes (either needle-like, rod, or pseudo-spherical), which were demonstrated in this paper to be of a nanometric dimension: E341(iii) is thus a nanomaterial. In water, HA particles sediment rapidly as agglomerates or aggregates over a pH of 6 and are progressively dissolved in acidic media (pH < 5) until the complete dissolution at a pH of 2. Consequently, since TCP may be considered as a nanomaterial on the European market, it raises the question of its potential persistency in the gastrointestinal tract.
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hal-04163406 , version 1 (17-07-2023)

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Youssef El Moussaoui, Hélène Terrisse, Sophie Quillard, Marie-Hélène Ropers, Bernard Humbert. The True Nature of Tricalcium Phosphate Used as Food Additive (E341(iii)). Nanomaterials, 2023, 13 (12), pp.1823. ⟨10.3390/nano13121823⟩. ⟨hal-04163406⟩
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