Meta-analysis of the effects of dietary vitamin E supplementation on alpha-tocopherol concentration and lipid oxidation in pork

L. Trefan, L. Bunger, J. Bloom-Hansen, J.A. Rooke, B. Salmi, C. Larzul, C. Terlouw, A. Doeschl-Wilson

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Meta-analyses have been carried out to quantify the effect of dietary vitamin E on alpha-tocopherol accumulation and on lipid oxidation in porcine M. longissimus. Published results of 13 (vitamin E accumulation) and 10 (lipid oxidation) experiments respectively were used for the analyses. After a number of standardization procedures, a nonlinear relationship was found between the supplementary vitamin E and the accumulation of alpha-tocopherol in pork which approached a maximum value of 6.4mug/g tissue. Pork lipid oxidation levels were described in terms of Thiobarbituric Acid Reacting Substances (TBARS) values. The statistical analysis revealed significant effect of vitamin E dose, muscle alpha-tocopherol concentration and supplementation time on TBARS, resulting in two prediction models for lipid oxidation. Meta-analysis has proven to be a valuable tool for combining results from previous studies to quantify the effects of dietary vitamin E. Further studies, carried out with standardized experimental protocols would be beneficial for model validation and to increase the predictive power of the derived models.
Original languageUndefined/Unknown
Pages (from-to)305-314
Number of pages10
JournalMeat Science
Volume87
Issue number4
DOIs
Publication statusPublished - 2011

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