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Energy value and digestibility of dietary oil containing mainly 1,3-diacylglycerol are similar to those of triacylglycerol

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Lipids

Abstract

Diacylglycerol (DAG) is a component of various vegetable oils. Approximately 70% of the DAG in edible oils are in the configuration of 1,3-DAG. We recently showed that long-term ingestion of dietary oil containing mainly 1,3-DAG reduces body fat accumulation in humans as compared to triacylglycerol (TAG) oil with a similar fatty acid composition. As the first step to elucidate the mechanism for this result, we examined the difference in the bioavailabilities of both oils by measuring food energy values and digestibilities in rats. Energy values of the DAG oil and the TAG oil, measured by bomb calorimeter, were 38.9 and 39.6 kJ/g, respectively. Apparent digestibility expressed according to the formula: (absorbed) x (ingested)−1x100=(ingested—excreted in feces)x(ingested)−1x100 for the DAG oil and the TAG oil were 96.3±0.4 and 96.3±0.3% (mean±SEM), respectively. The similarity in the bioavailabilities of both oils supports the hypothesis that the reduced fat accumulation by dietary DAG is caused by the different metabolic fates after the absorption into the gastrointestinal epithelial cells.

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Abbreviations

DAG:

diacylglycerol

FA:

fatty acid

MAG:

monoacylglycerol

TAG:

triacylglycerol

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Authors and Affiliations

  1. Division of Clinical Nutrition, The National Institute of Health and Nutrition, 162-0052, Tokyo, Japan

    Hiroshige Itakura

  2. Biological Science Laboratoriese, Kao Corporation, 2606, Akabane, Ichikai-machi, Haga-gun, 321-3497, Tochigi, Jaaan

    Hiroyuki Taguchi, Tomonori Nagao, Hiroyuki Watanabe, Kouji Onizawa, Noboru Matsuo & Ichiro Tokimitsu

Authors
  1. Hiroyuki Taguchi
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  2. Tomonori Nagao
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  3. Hiroyuki Watanabe
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  4. Kouji Onizawa
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  5. Noboru Matsuo
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  6. Ichiro Tokimitsu
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  7. Hiroshige Itakura
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Correspondence to Noboru Matsuo.

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Taguchi, H., Nagao, T., Watanabe, H. et al. Energy value and digestibility of dietary oil containing mainly 1,3-diacylglycerol are similar to those of triacylglycerol. Lipids 36, 379–382 (2001). https://doi.org/10.1007/s11745-001-0731-7

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  • DOI: https://doi.org/10.1007/s11745-001-0731-7

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