Mineral water, revealing fixed residue
Speaking of Mineral water, the level of fixed residue is the first aspect usually examined. This parameter indicates the substances that remain after evaporation induced at 180 degrees. It is always indicated on the label and is considered an essential element for choosing the product, but is sometimes unfairly demonized, as explained by a decalogue published by Inran, the Italian National Institute of Research on Food and Nutrition.
The widespread belief is that drinking only natural oligomineral water is necessary to maintain weight and treat ‘cellulite,’ as well as mandatory for children. This thesis is not shared by Italian researchers, who instead suggest alternating it with other types, because excessive diuresis can even reduce the amount of salts useful to the growing body.
There are 3 types of natural mineral water, distinguished by the increasing fixed residue. A value up to 50 mg/l for minimally mineralized, less than 500 for oligomineral, up to triple for medium-mineralized and above for those rich in minerals, belonging to the narrow range of medicinal mineral water.
