Abstract
Changes in fatty acid (FA) profiles and conjugated linoleic acid (CLA) concentrations of ovine milk produced by lactating ewes of the Karagouniko sheep breed, fed on grazing pastures in December and April, and Kefalotyri cheese made from this milk, were determined. Levels of saturated FAs (SFAs) decreased, but monounsaturated FAs (MUFAs) and polyunsaturated FAs (PUFAs), including CLA, increased in milk in April. However, saturated fatty acid stearic acid (C18:0) levels showed a significant increase (P < 0.05) in April. The level C18:2 cis-9, trans-11 CLA was significantly increased (P < 0.05) in April, by 50% (w/w) compared with that in December. No significant changes (P > 0.05) in FA and CLA levels during cheese making of ovine milk were observed, but CLA levels of Kefalotyri cheese were significantly (P < 0.05) increased by day 30 of ripening and remained stable up to the end of the ripening.
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