Advanced Food Analysis with Büchi’s Kjeldahl and Extraction Line

When it comes to fat and protein determination Büchi offers state-of-the-art solutions including automated extraction, hydrolysis, digestion and distillation units available with autosampler, scrubber, as well as application notes. Being a leading manufacturer of such equipment for 70 years proves the company’s ability to fulfil customer requirements at any time. Customer support and making application know-how available to users is another focus in Buchi’s market activities. Talking about application know-how one needs to mention that traditional protein determination is still performed today.

But digestion and distillation units can be used for many more purposes. Steam distillation, for example, is needed for determining the content of the food preservative SO2, volatile acids or alcohol content in wine or COD and cyanide content in water/waste water. For some of the mentioned applications special accessories are required, and contribute to accurate and reproducible results.

With its new extraction units E-812 SOX and E-816 SOX, Büchi was able to automate and accelerate the traditional Soxhlet extraction to such an extent that the extraction process can be carried out without human intervention in half of the time. As a result, both requirements are satisfied: the official Soxhlet method (according to Weibull-Stoldt) is performed quickly and with reasonable effort.

Furthermore, the new extraction units are also available in a hot extraction (HE) version, which performs extraction following the Randall principle, a commonly used procedure to determine the not chemically bound fat content – the so-called crude fat content.

Once again, Büchi has successfully met customer needs with appealing design while simultaneously addressing current environmental concerns effectively. A new milestone in the field of laboratory equipment has been reached!