FAT SUBSTITUTION AND FOOD-INTAKE - EFFECT OF REPLACING FAT WITH SUCROSE POLYESTER AT LUNCH OR EVENING MEALS

The objective of the present study was to determine the effect of repl acement of fat by sucrose polyester (SPE) within a lunch or evening me al on subsequent energy intake and appetite control. The 2 x 2 design was intended to examine the effect on appetite of reducing the total e nergy and fat content of a meal (lunch or dinner) by replacement of na tural fat with 55 g SPE. The effects were monitored by measuring motiv ation to eat or actual food consumption during the remainder of the te st day (day 1) and throughout the following day (day 2). The 2 x 2 des ign yielded four conditions which were a control meal (5192 kJ, 73.2 g fat) and a fat-replaced meal (3305 kJ, 54.6 g SPE, 24 g fat) at midda y (lunch) or in the early evening (dinner). No significant differences were seen in ad lib. energy intake after the test meals on day 1 or d ay 2. Certain differences were detected in fat intake on day 2 but the se did not suggest nutrient compensation in response to the fat replac ement. Subjective assessment of motivation to eat did not indicate tha t the fat-reduced meal had a weaker satiating efficiency than the cont rol meal. A reduction in fat content, using fat replacement, did not r educe the satiating efficiency of a test meal given at lunch or dinner . No energy or macronutrient compensation occurred following the reduc tion in energy or fat intake during the rest of the test day or during the whole of the next day.