Extraktion av fett i mjölk och mjölkprodukter

Milestone ETHOS X microwave extraction

Fat

The traditional fat extraction methods are very labour intensive and time-consuming. Large amounts of solvents are required to remove fat from the sample matrix, resulting in very high running costs. As an example, conventional fat extraction of pretreated cheese usually requires 3 hours and over 100 mL of solvent per sample. Therefore, the standard fat extraction methods are not time- and cost efficient. Furthermore, they expose laboratory technicians to dangerous solvents.

To overcome these limitations, Milestone has developed a fast yet accurate microwave-based technology, which allows the chemist to carry out the simultaneous total fat determination in 12 milk and milk products samples in just 90 minutes, with equivalent results of those obtained with reference methods.

The ETHOS X determines total fat in milk and milk products as a result of two working steps.

In the first step sample hydrolysis and extraction take place simultaneously at relatively elevated temperature and pressure conditions.

In the second step a known aliquot of the solvent with the extracted fat is evaporated allowing the chemist to

weigh and measure the fat content. At the completion of the evaporation, the fat content is immediately weighed on a balance which is directly interfaced with the ETHOS X, taking advantage of the extremely short cooling time of the disposable cups.

The instrument operating software automatically calculates the fat content and all the statistics associated with the analysis of the 12 samples analyzed.

The new Milestone ETHOS X microwave cavity has a volume in excess of 70 liters, by far the largest currently available. With an installed power of 1900 Watt, the ETHOS X is the most powerful microwave platform system available for extraction. A rotating diffuser evenly distributes the microwaves throughout

the cavity. A high definition digital camera allows the chemist to monitor the progress of the extraction whilst fully protected by the all-stainless steel door of the instrument. Should there be a sudden over-pressurization of the cavity, the door slightly opens for rapid and safe pressure release and the microwave power is instantaneously cut off. A magnetic stirrer is built-in in the ETHOS X system. It is designed to ensure vigorous stirring of the solutions in all vessels. Finally, the ETHOS X actually acts as a fume hood, as it incorporates a powerful exhaust system.

 

Milestone is the microwave leader in providing laboratories safe, productive, and flexible options for Digestion, Extraction, Synthesis, Scale-up, Mercury determination, and Ashing. Visit www.milestonesrl.com or call +39 035 573857.

 
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