ABSTRACT
Filer et al. (9) conducted a metabolic balance study on TAG structure and fat absorption in humans. They fed formulas containing native and randomized lard to 11 infants. Some of their data are given in Table 3. When 16:0 was partially removed from the sn-2 position by randomization of the FA in the lard TAG, absorption of the FA was decreased with increased losses for FA. The major TAG in the native lard would be about 64% 18:1-16:0-18:1 vs. 24.9% in the randomized product These amounts were obtained as follows: native lard, % 16:0 in 2-position X % in TAG, 85.3 X 24.8 = 21.2. If each of these is associated with two oleates, 63.6% 18:1-16:0-18:1 results. The quantity in the randomized lard was calculated using the binomial equation: S3 + SZU = SlP + Ul, where S is saturate and U is unsaturate. The equation is applicable only to random mixtures.
