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Food Intake and Satiety Response after Medium-Chain Triglycerides Ingested as Solid or Liquid.
Tyler Maher1, Alistair Sampson2, Magdalena Goslawska2
1Oxford Brookes Centre for Nutrition and Health, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford OX3 0B, UK. tmaher@brookes.ac.uk.
Nutrients
|July 20, 2019
Summary
Consuming liquid medium-chain triglycerides (MCT) reduces overall daily energy intake compared to long-chain triglycerides (LCT). This effect occurs without altering subjective appetite sensations, highlighting the importance of physical form in MCT
Area of Science:
- Nutrition Science
- Human Metabolism
- Dietary Fat Research
Background:
- Medium-chain triglycerides (MCTs) are proposed to influence satiety and energy intake differently than long-chain triglycerides (LCTs).
- The physical form (solid vs. liquid) of ingested fats may modulate their metabolic effects.
- Understanding these interactions is crucial for dietary strategies aimed at weight management.
Purpose of the Study:
- To investigate the impact of medium-chain triglycerides (MCT) versus long-chain triglycerides (LCT) on subsequent energy intake and appetite.
- To determine if the physical form (solid or liquid) of MCT influences its effects on energy consumption and gastric emptying.
- To assess the relationship between MCT/LCT ingestion, gastric emptying, and subjective appetite ratings.
Main Methods:
- A randomized controlled trial involving 29 participants consuming breakfasts with either LCT or MCT in solid or liquid forms.
- Measurement of appetite ratings and gastric emptying (GE) over 4 hours post-breakfast.
- Assessment of ad libitum and whole-day energy intake.
Main Results:
- Liquid MCT (MCT-L) resulted in the lowest ad libitum energy intake compared to other conditions.
- Total daily energy intake was significantly lower following MCT-L consumption versus control liquid (Con-L).
- MCT breakfasts, particularly MCT-L, significantly delayed gastric emptying compared to LCT, without affecting appetite sensations.
Conclusions:
- Liquid medium-chain triglycerides (MCT) effectively reduce subsequent energy intake.
- The physical form of MCT is critical, with liquid form enhancing its satiating effect.
- MCT's impact on energy intake is mediated by delayed gastric emptying, not altered subjective appetite.
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