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KMID : 1239920120060010045
Nutrition Research and Practice
2012 Volume.6 No. 1 p.45 ~ p.50
Vitamin A status of 20- to 59-year-old adults living in Seoul and the metropolitan area, Korea
Kim Sung-ah

Kim Young-Nam
Cho Youn-Ok
Abstract
Dietary intakes and plasma concentrations of retinol and carotenoids were estimated in assessing the vitamin A status of Korean adults living in Seoul and the metropolitan area. Three consecutive 24-h food recalls were collected from 106 healthy subjects (33 males and 73 females) aged 20-59 years. Fasting blood samples of the subjects were obtained and plasma retinol and carotenoids were analyzed. The daily vitamin A intakes (mean ¡¾ SD) were 887.77 ¡¾ 401.35 ¥ìg retinol equivalents or 531.84 ¡¾ 226.42 ¥ìg retinol activity equivalents. There were no significant differences in vitamin A intakes among age groups. The retinol intake of subjects was 175.92 ¡¾ 129.87 ¥ìg/day. The retinol intake of the subjects in their 50's was significantly lower than those in their 20's and 30's (P < 0.05). Provitamin A carotenoid intakes were 3,828.37 ¡¾ 2,196.29 ¥ìg/day ¥â-carotene, 472.57 ¡¾ 316.68 ¥ìg/day ¥á-carotene, and 412.83 ¡¾ 306.46 ¥ìg/day ¥â-cryptoxanthin. Approximately 17% of the subjects consumed vitamin A less than the Korean Estimated Average Requirements for vitamin A. The plasma retinol concentration was 1.22 ¡¾ 0.34 ¥ìmol/L. There was no significant difference in plasma retinol concentrations among age groups. However, the concentrations of ¥â-carotene, lycopene, and lutein of subjects in their 50's were significantly higher than those of in their 20's. Only one subject had a plasma retinol concentration < 0.70 ¥ìmol/L indicating marginal vitamin A status. Plasma retinol concentration in 30% of the subjects was 0.70- < 1.05 ¥ìmol/L, which is interpreted as the concentration possibly responsive to greater intake of vitamin A. In conclusion, dietary intakes and status of vitamin A were generally adequate in Korean adults examined in this study.
KEYWORD
Vitamin A status, retinol, provitamin A carotenoids, carotenoids
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SCI(E) ÇмúÁøÈïÀç´Ü(KCI) KoreaMed