We estimated the metabolizable caloric value of the fat substitute to be significantly reduced (30% of a regular fat), by comparing the rate of CO2 excretion from the labeled fat substitute to the rate of CO2 excretion resulting from the metabolism of the ingested control substrate with known caloric value in order to estimate the caloric value of the fat substitute. Using the customary approach for determining the metabolizable energy of a partially digested substrate, which includes measuring the amount of substrate that is excreted, and from that deduce the amount absorbed, we would have overestimated the caloric value of the fat substitute. We feel that the 14C/13C ratio method we have used is the preferable means by which to determine the caloric value of a partially absorbed substrate, both because of convenience and, most importantly, accuracy. In conclusion, we demonstrated with this tracer technique that this fat substitute provides one-third of the calories of a regular fat. Therefore, it can be helpful in the reduction of dietary-energy intake.
|Number of pages||3|
|Journal||Annals of the New York Academy of Sciences|
|State||Published - 1997|