10:04:2011 - Vitamin E - Vitamin E Discovery 1922 but took...

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Unformatted text preview: Vitamin E Discovery 1922 but took several years to determine a function. University of California and Berkley found deficiency in female rats caused loss of pregnancy. It then took decades to figure out vitamin Es specific biochemical pathways University of Arkansas found deficiency in male rats caused sterility. So termed the sex vitamin Structure Made up of 8 vitamers 4 tocopherols: contain saturated side chains of 16 carbons 4 tocotrienols (trienols) with unsaturated side chains of 16 carbons In each group the location of methyl groups determine , , , or Only -tocopherol has biological activity In food -tocopherol is found as RRR -tocopherol In supplemental form found as: all racemic -tocopherol acetate and all racemic -tocopherol succinate. These are a combination of RRR, RSR, RRS, RSS and SRR SSR, SRS and SSS. The form of the viatmin should be listed on the label. chromanol/ chromane ring Phytyl side chain Sources Plant sources: plant oils and peanut butter Animal source: VE (-tocopherol) higher in fatty tissues DRI mg/day 1 3 6 4 7 7 Males 8 13 11 14 - >70 15 Females 8 13 11 14 - >70 15 Vegetable Oil (mg/Tb) Sat Mono Poly Palm 12 21 32 15 3 29 51 39 10 Soybean 11 8 64 28 15 24 61 Cottonseed 10 53 47 27 19 54 Corn 10 20 6 74 13 25 62 Canola 8 38 60 2 6 58 36 Safflower 7 69 31 9 13 78 Sunflower 7 89 9 2 11 20 69 Peanut 5 45 50 5 18 48 34 Olive 1 100 14 77 9 Coconut 0.5 26 14 12 3 45 92 6 2 Total Vitamin E Tocopherols % Tocotrienols % Fatty Acids % Vitamin E Composition and Amounts in Dietary Vegetable Oils Digestion and Absorption Tocopherol found free in foods, trienols are esterified Both trienols and the supplemental forms of...
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10:04:2011 - Vitamin E - Vitamin E Discovery 1922 but took...

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