Mineral Concentrations in Bottled Water Products: Implications for Canadians’ Mineral Intakes

Publication: Canadian Journal of Dietetic Practice and Research
18 February 2013

Abstract

Purpose: The popularity of bottled water products (BWPs) is growing in Canada. Concentrations of minerals with important implications for health were compared in different types of BWPs.
Methods: One sample of each brand and type of plain BWP (purified, remineralized, spring, mineral, and artesian), flavoured BWP, and nutrient-enriched BWP sold in major stores in Ottawa, Ontario, was purchased to allow determination of mineral concentrations by flame atomic absorption or emission spectroscopy. A total of 124 BWPs representing 37 brands were analyzed.
Results: In general, spring and mineral water contained higher amounts of magnesium and calcium than did purified, remineralized, artesian, flavoured, or nutrient-enriched water. Most plain BWPs contained little sodium and potassium, whereas 15% to 35% of flavoured and nutrient-enriched products had considerably higher concentrations. Only magnesium and calcium concentrations were highly correlated (r=0.76, p<0.001). Calculation of the percentage of Dietary Reference Intakes that could be supplied by each product revealed that, if they are consumed habitually, many products can contribute substantially to recommended intakes of these minerals.
Conclusions: Mineral concentrations in most types of BWP varied, but distinct differences between types of products were identified. Consumers should be aware of the mineral content of BWPs because some could influence intakes of certain minerals significantly.

Résumé

Objectif: La popularité des produits d'eau embouteillée (PEE) ne cesse de croître au Canada. Les concentrations de minéraux ayant des répercussions importantes sur la santé ont été comparées dans différents types de PEE.
Méthodes: Un échantillon de chaque marque et type de PEE ordinaires (eau purifiée, reminéralisée, de source, minérale et artésienne), de PEE aromatisés et de PEE enrichis en nutriments vendus dans les grands magasins à Ottawa, en Ontario, a été acheté afin de déterminer les concentrations en minéraux au moyen d'une spectrométrie d'absorption atomique par la flamme ou d'une spectrométrie d’émission atomique. Un total de 124 PEE représentant 37 marques ont été analysés.
Résultats: En général, l'eau de source et l'eau minérale contenaient des quantités plus importantes de magnésium et de calcium que l'eau purifiée, reminéralisée, artésienne, aromatisée ou enrichie en nutriments. La plupart des PEE ordinaires contenaient peu de sodium et de potassium, alors que 15 à 35% des produits aromatisés et enrichis en nutriments comportaient des concentrations considérablement plus élevées. Seules les concentrations de magnésium et de calcium étaient fortement corrélées (r = 0,76; p < 0,001). Le calcul du pourcentage de l'apport nutritionnel de référence qui pouvait être fourni par chacun des produits a révélé que, s'ils sont consommés de manière habituelle, de nombreux produits peuvent contribuer de façon considérable aux apports recommandés de ces minéraux.
Conclusions: Les concentrations en minéraux dans la majorité des PEE variaient, mais des différences distinctes entre les types de produits ont été identifiées. Les consommateurs devraient être conscients de la teneur en minéraux des PEE, car certains d'entre eux pourraient grandement influencer leurs apports en certains minéraux.

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Information & Authors

Information

Published In

cover image Canadian Journal of Dietetic Practice and Research
Canadian Journal of Dietetic Practice and Research
Volume 74Number 1March 2013
Pages: 46 - 50

History

Version of record online: 18 February 2013

Authors

Affiliations

Jesse Bertinato, PhD
Nutrition Research Division, Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON
Jessica Taylor, BSc
Nutrition Research Division, Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON

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