Minerals in Food - Macronutrients and Micronutrients

Health Care Presentation on minerals Definition & classification examples and Requirements in Human Body in ppt / .do/. word/ .pdf format

Minerals :-

Minerals are inorganic substances that play an important role in a variety of metabolic reactions, as cofactors. They form one of the essential components of the diet. They are essentially divided into two major groups: macronutrients which are required in large amounts such as calcium, magnesium, sulphur, sodium, potassium and chloride; and micronutrients or trace elements which are required in very small quantities in the diet.

The micronutrients in the diet:-

  • Those recognized as essential for human nutrition and for which sufficient information is available to justify the recommended dietary allowances (RDA) such as zinc, iodine and iron.

  • Those probably essential for human nutrition (known to be essential in animals, but insufficient information is available regarding humans). Copper, molybdenum, fluorine, selenium, cobalt, chromium and manganese are examples of this type.

  • Those present in human tissues, but have not yet been proved to be essential, for example, nickel, silicon, tin and vanadium.    

 Specialized instruments tike flame photometer and absorption spectrophotometer need to be used for the detection of minerals.

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