Short-term effects of yoghurt containing a novel fat emulsion on energy and macronutrient intakes in non-obese subjects

AA Burns, Barbara Livingstone, Rob Welch, A Dunne, PJ Robson, L Lindmark, CA Reid, U Mullaney, IR Rowland

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Abstract

BACKGROUND: The satiating properties of fat remain poorly understood, particularly with reference to its physicochemical characteristics. OBJECTIVE: To investigate the short-term effects of consumption of yoghurt containing either a novel fat emulsion or normal milk fat, on the energy and macronutrient intakes of non-obese subjects. DESIGN: Two double-blind, placebo-controlled, within-subject crossover studies were conducted three months apart. Twenty-nine (15 F, 14 NI) and thirty (16 F, 14 M) subjects participated in Study 1 and Study 2 respectively. In each study, subjects were given in random order, 7 days apart, either a 200 g portion of a test (5 g of a novel fat emulsion + 1 g milk fat) or control (6 g milk fat) yoghurt at 1300 h. At 4 h post-consumption subjects were given ad libitum access to a range of foods. Amounts of food consumed by individuals were determined by pre- and post-covert weighing of individual serving dishes. RESULTS: Mean energy intakes were significantly lower after the test yoghurt compared with the control yoghurt in Study 1 (6.4 vs 7.6 MJ; P < 0.001), Study 2 (6.9 vs 7.9 MJ; P < 0.001), and for both studies combined (6.7 vs 7.7 MJ; P < 0.001). The corresponding fat intakes in Study 7, Study 2 and in the combined studies were all significantly reduced (P < 0.001). Protein and carbohydrate intakes were also significantly reduced in Study 1 (P < 0.05), Study 2 (P < 0.01), and for the combined studies (P < 0.001). CONCLUSIONS: These results suggest that the physicochemical characteristics of small amounts of dietary fat affect short-term satiety.
Original languageEnglish
Pages (from-to)1419-1425
JournalInternational Journal of Obesity
Volume24
Issue number11
Publication statusPublished - Nov 2000

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    Burns, AA., Livingstone, B., Welch, R., Dunne, A., Robson, PJ., Lindmark, L., Reid, CA., Mullaney, U., & Rowland, IR. (2000). Short-term effects of yoghurt containing a novel fat emulsion on energy and macronutrient intakes in non-obese subjects. International Journal of Obesity, 24(11), 1419-1425.