Whey protein determination in milk according to the Kjeldahl method

3 Jun 2021

Milk proteins are the oldest and most widely consumed food proteins. There is currently a large interest in these substances, both in nutritional field and in technological application. The nitrogen compounds of milk can be divided in: casein proteins and non-casein nitrogen. Among this, there are soluble whey proteins. In order to determine soluble whey proteins, it’s necessary to know the amount of milk total nitrogen, non-casein nitrogen and non-proteins nitrogen substances.

UDK Series - Kjeldahl Distillation Units

Velp Scientifica

The UDK Series Distillers are designed to meet the most challenging demands and requirements for diverse applications, according to international standards: Kjeldahl nitrogen TKN, proteins, ammoniacal nitrogen, nitric nitrogen (Devarda), phenols, TVBN and volatile acids, cyanides, and alcohol content. 

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DKL Series and DK Series - Kjeldahl Digesters

Velp Scientifica

DK Series digesters are traditional digesters, consisting of an aluminum heating block to offer high thermal homogeneity. The DKL Series of digesters offers a premium level of automation: lowering and lifting of the samples take place automatically, as well as the separation between the test tubes and the suction cup. VELP digesters work in accordance with a variety of Standards (such as AOAC, ISO, EPA, DIN etc.)

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