Abstract
ABSTRACT:The objective of this work was to obtain concentrated natural conjugated linoleic acid (CLA) from milk fat by urea complexation. Milk fat was hydrolyzed to provide free fatty acids, followed by crystallization with different ratios of urea. The profiles of fatty acids achieved by urea complexation showed different fatty acid compositions. Long‐chain unsaturated fatty acids, including CLA, were concentrated after crystallization. The highest amount of CLA was achieved by the first crystallization with a 2:1 urea/fatty acid ratio. CLA was elevated 2.5‐fold. The C18:1/C18:0 fatty acid ratio was increased from 2 to 51, and stearic acid (C18:0) was decreased 17‐fold.
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