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Dietary vitamin E inhibits the trans 10-18:1 shift in beef backfat

Juárez, M., Dugan, M.E.R., Aalhus, J.L., Aldai, N., Basarab, J.A., Baron, V.S., McAllister, T.A. (2010). Dietary vitamin E inhibits the trans 10-18:1 shift in beef backfat, 90(1), 9-12. http://dx.doi.org/10.4141/CJAS09088

Abstract

Forty feedlot steers were fed a barley1- grai1n-based finishing diet typical for western Canada, with two levels of supplementary vitamin E (468 or 1068 IU head -1 d-1) and the effect on backfat trans-18:1 isomeric profile was determined. Feeding 1068 IU vitamin E reduced the total trans-18:1 content in backfat (P<0.01), as well as the percentage of trans 10-18:1 (P<0.001), which are related to an increased risk for cardiovascular diseases. On the other hand, trans 11-18:1 (vaccenic acid) the precursor for cis 9, trans 11- 18:2(rumenic acid), which have several purported health benefits, increased (P<0.01). Vitamin E could, therefore, be used to decrease trans-18:1 in beef and improve its isomeric profile. © 2010 Agricultural Institute of Canada.

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