SelectScience
Join Free
Accelerating Science
ResourceFood and Beverage

Whey protein determination in milk according to the Kjeldahl method

Velp Scientifica
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.

Related products

Request Quote for All Products

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. 

(13)

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.)

(1)

Links

Velp ScientificaCompany website

Tags

KjeldahlKjeldahl is an analytical chemistry technique for the quantitation of nitrogen in chemical substances. Applications of Kjeldahl include analyzing the protein content of food, nitrogen analysis in environmental sciences and the pharmaceutical industry and total kjeldahl nitrogen, nitrate and ammonia analyses in agricultural sciences.MilkMilk is a dairy product that contains lactose. It is consumed by infant mammals to provide nutrients from the mother. In 2008, the Chinese milk scandal saw the unlawful adulteration of powdered milk with melamine.Food TestingFood testing refers to a variety experiments including PCR, mass spectrometry, processing, QuEChERS, analyzing and Kjeldahl.Food QualityFood quality refers to the attributes of food that influence its safety, nutrition, and taste. Monitoring and ensuring food quality are essential in production to meet health regulations and consumer expectations. Techniques like spectroscopy, chromatography, and microbial testing are used to assess food properties and detect contaminants. Browse our peer-reviewed product directory to find food quality testing solutions; compare products, check reviews, and get pricing directly from manufacturers.

Related resources

Whey protein determination in milk according to the Kjeldahl method