Abstract
We investigated the daily intake of tocopherols (Toc) and fatty acids by total diet analysis. Total diet composites of 277 food items was prepared based on the “National Nurition Survey” and modified by “Family Income and Expenditure Survey” and “Statistical Yearbook of Ministry of Agriculture, Forestry and Fisheries. ”
Estimated daily intake was 6.52mg/day α-Toc (Eq), calculated from 5.67mg/day α-Toc, 8.39mg/day γ-Toc and 1.04mg/day δ-Toc. The contribution of each food group to daily intake of α-Toc (Eq) was: fat and oil 37.7%, green vegetables 17.4%, grain, nuts and potatoes 10.8%, fishes 9.9%, bean products 9.4% and others 14.8%.
Estimated total lipid was 53.5g and total fatty acids was 44.5g, which included saturated 12.4g, monoenoic 18.3g, dienoic 9.6g, trienoic 1.6g, tetraenoic 0.13g, pentaenoic 0.40g and hexaenoic 0.61g.
The Toc/PUFA ratio was calculated as 0.46 by Harris's formula and 0.51 by Bieri's formula,
We attempted to convert each PUFA to a linoleate equivalent, according to the “peroxidizability index, ” and obtained the following ratio: α-Toc (Eq) /linoleate (Eq) =0.31mg/g. Compared with the minimum requisite ratio proposed by Horwitt (0.8), the above value was very low.
