Cheese!

The printing press is always hot here at LS9. “A simple and reliable liquid chromatography-tandem mass spectrometry method for determination of ochratoxin A in hard cheese” is our latest accepted manuscript and it has been recently published by the International Journal of Food Sciences and Nutrition. The paper reports a simple and reliable mass spectrometry hyphenated chromatographic method for ochratoxin A determination in hard cheese. The proposed protocol can be considered suitable for routine analysis, especially when a great number of samples have to be processed. The method can guarantee either quick, easy and low-cost analysis or accuracy and precision. The analytical performances were satisfactory in terms of sensitivity (limit of quantification = 1 μg/kg) and although no legal limits have been set up for cheese, this value is consistent with the tolerances fixed for other regulated foods. Preliminary results on 40 commercial samples of grated hard cheese revealed the occurrence of OTA in 40 commercial grated cheese samples, resulting in six samples with an OTA amount higher than 1mg/kg.

On the basis of the collected data, the implementation of specific legislation may be considered to regulate the use
of OTA-contaminated crusts for grated cheese production.

Spread the word