Instant coffee as a source of calcium and magnesium

Authors:
Ioan Gogoasa, Adina Negrea, Mihaela Ciopec, Adina Berbecea, Maria Rada, Maria Despina Bordean, Liana Alda, Diana Moigradea, Ariana Velciov, Simion Alda

Volume 23, Issue 4;
Pages: 204-208; 2017
ISSN: 2069-0053 (print) (former ISSN: 1453-1399), Agroprint;
ISSN (online): 2068-9551
Abstract:
Our study aimed at determining the content in Ca and Mg of different instant coffee brands and at determining their daily recommended mineral intake. We determined, by flame atomic absorption, total concentrations of Ca and Mg in five instant coffee brands marketed in different supermarkets in Timisoara, Romania. Experimental results show that the instant coffee brands we analysed contain important amounts of Ca and Mg: thus, their concentration limits ranged between 1.512-1.802 mg/kg (Ca) and 2.500-3.187 mg/kg (Mg). Calculus made to assess Ca and Mg supply to the daily recommended intake per 5 g of instant coffee powder show that the instant coffee brands we studied are not important sources of Ca and Mg despite the Mg supply slightly above normal values.
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