MODIFICATION OF FATTY-ACIDS IN MILK BY FEEDING CALCIUM-PROTECTED HIGHOLEIC SUNFLOWER OIL

Calcium soaps of high oleic sunflower oil (HOS-Ca) were prepared, usin g alkaline hydrolysis and calcium precipitation. and freeze-dried. Cow s' diets were prepared to provide 0, 0.85 kg or 1.7 kg HOS-Ca/day. Fat ty acids and cholesterol were determined by gas chromatography. Sensor y evaluations of milk from cows fed 0 and 1.7 kg HOS-Ca/day were condu cted using triangle tests. The 18:1 omega 9 concentration in milk from cows fed the 1.7 kg HOS-Ca diet increased from 22.9 to 35.2% compared to the control (p<0.05). Concentration of total medium-chain saturate s (C12-C16) decreased from 40.7 to 31.4% (p<0.05). Feeding HOS-Ca resu lted in increases of monoene fatty acids and lower medium-chain satura ted Fatty acids bur no change in milk flavor.