微量营养素。英国家庭食物供应中的镁、铜、锌、维生素B6、维生素B12和叶酸。

Trace nutrients. 3 Magnesium, copper, zinc, vitamin B6, vitamin B12 and folic acid in the British household food supply.

Spring J A, Robertson J, Buss D H

Br J Nutr. 1979 May;41(3):487-93. doi: 10.1079/bjn19790063.

Abstract

Intakes of magnesium, copper, zinc, vitamin B6, vitamin B12 and folic acid in Britain were calculated by applying the values selected for the 4th edition of McCance and Widdowson's The Composition of Foods (Paul & Southgate, 1978) to the amounts of food recorded in the National Food Survey made during 1976 (Ministry of Agriculture, Fisheries and Food, 1977). 2. National average intakes were (/person per d): Mg 249 mg, Cu 1.51 mg, Zn 9.1 mg, vitamin B6 1.36 mg, vitamin B12 6.6 micrograms free folic acid 105 microgram and total folic acid 190 micrograms. Corresponding intakes (/person) in families with four or more children were 10-20% lower. 3. A comparison of intakes with those recommended in Canada (Department of National Health and Welfare, 1976) and the USA (National Research Council, 1974) or by WHO (1973) indicated that for folic acid average values were particularly low, and only for vitamin B12 were the recommendations significantly exceeded. 4. Contributions from alcoholic drinks and confectionery were also calculated and found, on average, to be significant for cu, vitamin B12 and folic acid. 5. The losses of B-vitamins which might occur on cooking are discussed.

摘要

通过将《麦坎斯和威德森食物成分》（保罗与索思盖特，1978年）第4版中选定的值应用于1976年全国食物调查（农业、渔业和食品部，1977年）记录的食物量，计算出了英国镁、铜、锌、维生素B6、维生素B12和叶酸的摄入量。2. 全国平均摄入量为（每人每天）：镁249毫克、铜1.51毫克、锌9.1毫克、维生素B6 1.36毫克、维生素B12 6.6微克、游离叶酸105微克、总叶酸190微克。有四个或更多孩子的家庭中相应的摄入量（每人）低10 - 20%。3. 将这些摄入量与加拿大（国家卫生和福利部，1976年）、美国（国家研究委员会，1974年）或世界卫生组织（1973年）推荐的摄入量进行比较表明，叶酸的平均值特别低，只有维生素B12的摄入量显著超过了推荐值。4. 还计算了酒精饮料和糖果的贡献，发现平均而言，它们对铜、维生素B12和叶酸的贡献很大。5. 讨论了烹饪过程中可能发生的B族维生素损失。