Heinonen M, Piironen V
Department of Food Chemistry and Technology, University of Helsinki, Finland.
Int J Vitam Nutr Res. 1991;61(1):27-32.
The Finns average intake of tocopherols, tocotrienols, and vitamin E (alpha-tocopherol equivalents) was determined. The food consumption data were derived mainly from the national food balance sheets (for 1987). The average Finnish daily diet was composed and analyzed both in spring and in autumn in order to minimize the effect of seasonal variation. The four tocopherols and four tocotrienols were then determined using high-performance liquid chromatography (HPLC). For comparison, the intake of vitamin E compounds was also calculated using the most recent Finnish analytical data on tocopherols and tocotrienols in food. According to the analytical results, the average daily vitamin E intake in Finland was 10.7 mg alpha-tocopherol equivalents (alpha-TE) of which amount 85% is due to alpha-tocopherol. The analyzed values (10.8 mg alpha-TE in spring and 10.7 mg alpha-TE in autumn) of vitamin E intake did not markedly differ from the calculated value (10.3 mg alpha-TE), thus indicating that the Finnish food composition data upon tocopherols and tocotrienols is up-to-date and accurate. The best food sources of vitamin E were dietary fat (41% of the total amount), cereals (18%), and dairy products and eggs (13%). The average Finnish diet contained 9.5 g of polyunsaturated fatty acids (PUFA), which leads to the ratio of 0.9 between alpha-tocopherol (mg) and PUFA (g). According to these results, the dietary recommendations for vitamin E are met in Finland.
测定了芬兰人生育三烯酚、生育酚和维生素E（α-生育酚当量）的平均摄入量。食物消费数据主要来自国家食物平衡表（1987年）。为尽量减少季节变化的影响，对芬兰日常饮食在春季和秋季分别进行了构成分析。然后使用高效液相色谱法（HPLC）测定了四种生育酚和四种生育三烯酚。为作比较，还利用芬兰关于食物中生育酚和生育三烯酚的最新分析数据计算了维生素E化合物的摄入量。根据分析结果，芬兰人维生素E的日均摄入量为10.7毫克α-生育酚当量（α-TE），其中85%来自α-生育酚。维生素E摄入量的分析值（春季为10.8毫克α-TE，秋季为10.7毫克α-TE）与计算值（10.3毫克α-TE）没有显著差异，这表明芬兰关于生育酚和生育三烯酚的食物成分数据是最新且准确的。维生素E的最佳食物来源是膳食脂肪（占总量的41%）、谷物（18%）以及乳制品和蛋类（13%）。芬兰人的日常饮食平均含有9.5克多不饱和脂肪酸（PUFA），这使得α-生育酚（毫克）与PUFA（克）的比例为0.9。根据这些结果，芬兰人的维生素E膳食建议摄入量是达标的。
