Determination of PAH in food


Courtesy of Courtesy of BÜCHI Labortechnik AG

Customer: Food and Feed Governmental lab., France

France is divided into administrative regions and each region has its governmental lab. These labs analyze food products to check their compliance with the legal regulations, and to make sure that the products are not hazardous to health.

Application: Determination of PAH in food

Due to the guidelines ot the LABERCA, the French reference laboratory in food contamination, the detection of contaminants in food becomes more and more important. The LABERCA (equivalent to German CVUA) is a network of governmental labs considered as reference, and laboratories have to follow their procedure. LABERCA specifies the use of pressurized solvent extraction before analysis. They define detailed guidelines and the laboratories have to work accordingly.

Equipment: SpeedExtractor E-914

The laooratory was equipped with one classical extractor before. Due to an increase in the analysis volume, they had to find an extractor allowing them to analyze more samples in a shorter time and with a greater flexibility. Due to the sample size and the sample preparation, the E-914 with 80ml cells became the instrument of choice. The cell size enables them to put a bed of celite for filtration purposes at the bottom of the cell, followed by a layer of florisil to retain dyes, fat and impurities.

Benefit / Conclusion: Time saving and better recovery

The key benefit are much higher recovery rates (92 - 95%), esp. on volatile PAH, which got mostly lost over time during classical extraction. In addition to that the extraction with the SpeedExtractor allows the customer to perform more analyses per day. With the SpeedExtrac¬tor they run four extractions in 30 minutes, while the classical approach takes several hours.

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