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Fat-Soluble Vitamin Status Is Not Affected by Diacylglycerol Consumption

2001; Karger Publishers; Volume: 45; Issue: 6 Linguagem: Inglês

10.1159/000046736

1421-9697

Hiroyuki Watanabe, Kouji Onizawa, Sachio Naito, Hiroyuki Taguchi, Naohiro Goto, Tomonori Nagao, Noboru Matsuo, Ichiro Tokimitsu, Takuji Yasukawa, Rikio Tsushima, Hiroyuki Shimasaki, Hiroshige Itakura,

Adipose Tissue and Metabolism

<i>Objective:</i> The objective of this study was to examine the effect of dietary diacylglycerol (DAG) on the bioavailability of fat-soluble vitamins in comparison with triacylglycerol (TAG). <i>Methods:</i> We conducted a long-term administration test of DAG and TAG in 27 healthy men aged 27–47 years. After measuring baseline values, subjects were randomized into two groups, one group (n = 15) was given DAG and the other (n = 12) was given TAG. Subjects ingested 20 g of DAG or TAG either in mayonnaise or an emulsion drink of their own choice at meals once a day for 12 weeks. At 4, 8 and 12 weeks, fasting blood samples were drawn and serum levels of vitamin A, E, and D were measured. <i>Results:</i> There were no significant changes in vitamin A levels throughout the study period. Compared to the initial values (using a Student’s t test for paired values), significant differences of vitamin E and D were seen at some points during the experiment. According to a two-way repeated measures analysis of variance, however, DAG and TAG (lipid) and time had no effect on fat-soluble vitamin levels. <i>Conclusions:</i> Our results indicate that DAG does not affect the absorption of the fat-soluble vitamins in diets.