To obtain insights into the daily supply of vitamin E, Se, minerals, and other nutrients in well-planned Taiwanese balanced diets, six daily diet samples whose formulation and preparation had been planned and supervised by hospital dieticians were collected from a diet/nutrition unit of a university hospital. According to HPLC analysis, the mean daily vitamin E supplied by these diets was 11.7 ± 2.1 mg/day of α-tocopherol equivalent, including 9.8 γ 2.4, 17.4 γ 9.8, and 5.5 γ 1.0 mg/day of α-, γ-, and δ-tocopherol, respectively, and are very close to the RDA value of 12 mg/day. The mean selenium content of the daily diet samples analyzed spectrofluorometrically were 112 ± 7 μg/day, well above the recommended allowance of 55 μg/day. Using inductively coupled plasma emission spectroscopy, the supply of minerals including Ca, P, Fe, Cu, Zn, Na, and K in these diets were found to surpass the recommended allowances or comply with the dietary goals. Unexpectedly, it was found that the mean Mg content was only 258 mg/day which was below the recommended intake of 300 mg/day. The mean proximate compositions were 97, 74, 6.4, 13.2, and 287.4 g/day of crude protein, crude fat, crude fiber, crude ash, and nitrogen-free extract, respectively, from which the mean energy supply was calculated to be 2202 kcal/day. Although the analyzed energy value was 10% higher than the planned target value, the percentages of energy contributed by the three macro-nutrients agreed well to planned values. The pattern of seven essential amino acids analyzed by acid hydrolysis and an amino acid analyzer was found to surpass the requirement patterns for 2-year-old children and adults. The results indicate that vitamin E, Se, and most minerals provided by a well-planned Taiwanese balanced diet meet the recommended allowances except for Mg.
|頁（從 - 到）||221-231|
|期刊||Nutritional Sciences Journal|
|出版狀態||已發佈 - 12月 2002|
ASJC Scopus subject areas