Journal of Nutritional Science and Vitaminology
Online ISSN : 1881-7742
Print ISSN : 0301-4800
Comparison of Diet-Induced Thermogenesis of Foods Containing Medium- versus Long-Chain Triacylglycerols
Michio KASAINaohisa NOSAKAHideaki MAKIYoshie SUZUKIHiroyuki TAKEUCHIToshiaki AOYAMAAtsushi OHRAYouji HARADAMitsuko OKAZAKIKazuo KONDO
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2002 Volume 48 Issue 6 Pages 536-540

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Abstract

The purpose of this study was to investigate the effect of 5-10g of medium- chain triacylglycerols (MCT) on diet-induced thermogenesis in healthy humans. The study compared diet-induced thermogenesis after ingestion of test foods containing MCT and long-chain triacylglycerols (LCT), using a double-blind, crossover design. Eight male and eight female subjects participated in study 1 and study 2, respectively. In both studies, the LCT was a blend of rapeseed oil and soybean oil. In study 1, the liquid meals contained 10g MCT (10M), a mixture of 5g MCT and 5g LCT (5M5L), and 10g LCT (10L). In study 2, the subjects were given a meal (sandwich and clear soup) with the mayonnaise or margarine containing 5g of MCT or LCT. Postprandial energy expenditure was measured by indirect calorimetry before and during the 6 h after ingestion of the test meals. Diet-induced thermogenesis was significantly greater after 5M5L and 10M ingestion as compared to 10L inges- tion. Ingestion of the mayonnaise or margarine containing 5g MCT caused significantly larger diet-induced thermogenesis as compared to that of LCT. These results suggest that, in healthy humans, the intake of 5-10g of MCT causes larger diet-induced thermogenesis than that of LCT, irrespective of the form of meal containing the MCT.

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