Authentication of fats from other sources

Asa quick method of detection it has been suggested that differential scanning calorimetry (DSC) can detect lard adulteration in goat and mutton tallows, though the level of detection is not likely to be very low. 

Sterol analysis, fatty acid analysis of the whole fat and of the acids at the 2-position, and triglycerides by GC, can be very useful in determining adulteration of and by animal fats. In the future HPLC of triglycerides is likely to provide an even better method for some purposes, but much more data need to be collected before this can be evaluated. 

Akerlind, M., Holtenius, K., Bertilsson, J. and Emanuelson, M. (1999) Milk composition and feed intake in dairy cows selected for high or low milk fat percentage. Livestock Prod. Sci., 59, 1-11. 

Amelotti, G. Brianza, M. and Lodigiani, R (1983) Applications and limits of differential scanning calorimetry to the detection of beef suet in butter. Riv. Ital. Sost. Grasse, 60, 557-564. 

Andreotti, G., Lamanna, R., Trivellone, E. and Motta, A. (2002) 13C NMR spectra of TAG An easy way to distinguish milks from different animal species. J. Am. Oil Chem. Soc., 79, In Press. 

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