Microwave Total Fat Determination in Milk and Milk Products

option time 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.

o con comprovata esperienza nel trading Microwave Total Fat Determination in Milk and Milk Products 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 main advantages of this technology include:

  • One basis method for most milk and milk products
  • Hydrolysis and extraction in one step
  • High sample throughput, 12 total fat determinations in 90 minutes
  • Large sample amount, up to 10 gram
  • Green method, just 25 mL of solvent required
  • The fat obtained can be used for fatty acid analysis
  • Reproducible and fully documented
  • Safe working conditions



A new method 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.


Hydrolysis and extraction

key option opzioni binarie HYDROLYSIS AND EXTRACTION

flirt community berlin kostenlos Up to 12 samples can be analyzed simultaneously, with a typical sample amount up to 10 gram. 10 mL of diluted acid and 25 mL of solvent are used for most matrices. The combined hydrolysis and extraction process takes place at 125°C and requires approximately 50 minutes or less. Temperature is monitored and controlled in each and every vessel by using a unique combination of fi ber optic and infrared temperature sensors. The ETHOS X built-in magnetic stirrer assures an even heating and temperature uniformity in all vessels, as well as intensive mixing between the aqueous and the solvent phases.

In the picture a typical combined hydrolysis and extraction temperature profile. Acid: diluted sulfuric acid or diluted hydrochloric acid. Solvent: cycle-hexane or petroleum ether.

Solvent evaporation SOLVENT EVAPORATION

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