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The contribution of cacao consumption to the bioaccessible dietary cadmium exposure in the Belgian population

Vanderschueren, Ruth
Doevenspeck, Jasmien
Goethals, Lieselot
Smolders, E
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Abstract

Since 2019, EU limits apply to cadmium (Cd) concentrations in cacao-derived food products. The dietary risk assessment leading to that regulation used consumption surveys aggregated to a limited number of chocolate product categories and did not consider differences in Cd bioaccessibility. Here, the cacao-related dietary Cd exposure in the Belgian population was estimated with higher resolution and accounting for bioaccessibility. A food frequency questionnaire and a 24-hour recall (N=2055) were set up for the Belgian population, in combination with ICP-MS analysis of a large subset of cacao-containing products (N=349). Both the average chocolate consumption (28 g day-1) and the relative contribution of chocolate to the total dietary Cd exposure (7–9%) were higher than previously estimated for the Belgian population. The Cd bioaccessibility in chocolate products was a factor 5 (cacao powder) and 2 (dark chocolate) lower compared to wheat flour, suggesting lower bioavailability in chocolate than in wheat, which is a main contributor to dietary Cd. This study suggests that Cd intake from cacao consumption has been underestimated because of hidden cacao in non-chocolate food categories but, in contrast, may have overestimated the true exposure because of lower bioavailability compared to the main foodstuffs contributing to Cd exposure.

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2023-01-02
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Peer reviewed scientific article
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Keywords
bioaccessibility, Cadmium, chocolate, consumption survey
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RiskAssessment_General #1000785#
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