Total contents of major minerals in the nature yoghurt and in the yoghurts with the date powder of three dry varieties

Abstract

In this paper we report on the content of major minerals (calcium, magnesium, sodium, potassium, iron and zinc) in the nature yoghurt (without sugars) and three yoghurts added with date powders. The latter’s were from three dry date varieties (Mech-Degla, Degla-Beida and Frezza). The elements determination was carried out using atomic absorption spectrometry after mineralization processing. Total mineral content showed a great difference between the yoghurt nature and yoghurts enriched by date powder fruits. In the yoghurts added with date powder, following results were found (in mg/Kg): calcium (2213.31-2938.67), sodium (783.37-959.36), potassium (725.68-771.77), magnesium (169.54-267.85), iron (9.6-11.52), zinc (1.29-7.93). Concerning the natural yoghurt the values obtained were (in mg/Kg): calcium (1950.41), Sodium (684.72), potassium (540.58), magnesium (132.16), iron (5.26), zinc (0.35). These results are in positive interrelationship with those of the rheological properties.