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Analysis of Dairy Products

Milk - oil-in-water emulsion with all essential minerals

Milk and honey are the only diets whose sole function in nature is food. As all dairy products contain milk, the main focus in this text will be on milk. The role of milk is to provide nourishment for baby animals and humans as well. Whole milk from cow supplies 66 kcal of energy per 100 grams. Milk is a very complex food with over 100000 molecular components. Therefore only an approximate composition of milk is usually given. 100 g of milk for example consists of:

  • 88.0 g water
  • 3.2 g proteins: casein (most abundant) and some whey proteins
  • 3.4 g fat (mainly saturated fatty acids)
  • 4.7 g lactose
  • 0.72 g minerals (calcium, phosphate, magnesium, sodium, iodine, …)
  • Small amounts of acids (lactate, citrate, acetate, formate and oxalate)
  • Small amounts of enzymes (lipase, catalyse, phosphatase and peroxidase)
  • Small volumes of gasses as nitrogen and oxygen
  • Some vitamins (A, C, D and others)
Metrohm offers a wide range of instruments for the analysis of milk and milk products by ion chromatography, potentiometric or Karl Fischer titration and voltammetry.

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