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Composition of fatty acids in cow's milk fat produced in the lowlands, mountains and highlands of Switzerland using high-resolution gas chromatography

Composition of fatty acids in cow's milk fat produced in the lowlands, mountains and highlands of Switzerland using high-resolution gas chromatography

International Dairy Journal 12(8): 649-659

ISSN/ISBN: 0958-6946

DOI: 10.1016/s0958-6946(02)00061-4

The composition of fatty acids (approx. 70 acids) in 44 summer milk samples from three geographical sites was determined using high-resolution gas chromatography. We observed large differences between Lowlands (600-650 m), Mountains (900-1210 m) and Highlands (1275-2120 m) which are analogous to those observed between winter and summer fats. The largest relative increases as a function of the altitude of these three sites were those of the concentration of conjugated linoleic acids (0.87, 1.61 and 2.36 g 100 g(-1)), especially of the cis (c) 9 trans (t) 11 isomer (0.81, 1.50 and 2.18g 100g(-1)), and the fatty acids C18:1 t10 + t11 (2.11, 3.66 and 5.10g 100 g(-1)). There were significant differences in the concentration of fatty acids between the three geographical sites. Some fatty acids could also be interesting potential indicators for the origin of cream and also of the Protected Designated Origine "mountain" cheeses.

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Accession: 010368506

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