EN
The dietary components used by 102 breast-feeding women included in the study were reflected in the content of fatty acids in their breast-milk. Fatty acid profile in the milk was changing during lactation. Higher correlation ratios were found between the proportion of fatty acids in the analysed samples of human colostrum and the supply of fatty acids in the diet of women during pregnancy, when compared to mature milk. An inhibitory effect of trans fatty acids upon the synthesis of long-chain unsaturated fatty acids from their precursors, the linoleic acid and alpha-linoleic acid was observed.