부산대학교 도서관

Objective:Absorption of stearic acid from natural oils has been shown to be efficient, but it is claimed to be lower from short- and long-acyl-chain triacylyglycerol molecules (Salatrim). The aim was to measure the apparent absorption of stearic acid from Salatrim fat in an acute test meal.Design:Double–blind crossover study.Subjects:Ten healthy male volunteers, of whom eight completed the study.Methods:The subjects were studied on two occasions after consumption of a single high-fat meal either without (control) or with 30 g of Salatrim. Fecal samples were collected for 96 h after the meal and the fat was extracted for analysis of the content and composition of free and esterified long-chain fatty acids.Results:Baseline fecal fat was 5.6±2.6 g/day increasing to 10.4±4.9 g/day after addition of Salatrim (P=0.001). During the whole collection period, the baseline fecal free and esterified fatty acids were 2.6±2.3 and 0.8±0.7 g, respectively. After Salatrim meal the corresponding figures increased to 5.9±3.6 g (P=0.001) and 1.5 (±1.2) g (P=0.003), respectively. The total fecal stearic acid after control meal was 0.97±0.9 g. Consumption of Salatrim with 16.7±0.5 g of stearic acid increased the content to 3.12±1.6 g (P<0.001), with apparent absorption of 87%.Conclusions:The apparent absorption of stearic acid does not differ from its absorption from natural fats. The status of Salatrim as a low-energy fat substitute needs to be re-evaluated.Sponsorship:University of Turku.European Journal of Clinical Nutrition (2007) 61, 1352–1358; doi:10.1038/sj.ejcn.1602658; published online 14 February 2007 [ABSTRACT FROM AUTHOR]