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Vitamin E content of different animal products: Influence of animal nutrition

Der Vitamin E-Gehalt verschiedener tierischer Produkte: Einfluß der Tierernährung

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Zusammenfassung

In der vorliegenden Studie wurde der α-Tocopherolgehalt verschiedener Fleischstücke untersucht. Hähnchenschenkel hatte den höchsten α-Tocopherolgehalt, gefolgt von Hähnchenbrust und Schweineschulter (p<0.05). Die niedrigsten Konzentrationen wurden im Musculus longissimus dorsi vom Schwein, Rind, Kalb und in der Rindsschulter nachgewiesen. Mit dem durchschnittlichen, täglichen Verzehr an magerem Fleisch (105 g) in der Schweiz wurden die Empfehlungen für die tägliche Vitamin E-Zufuhr zu 3 % gedeckt.

Die Supplementierung des Schweine- und Legehennenfutters mit 200 mg α-Tocopherolacetat/kg führte zu einem signifikanten Anstieg des α-Tocopherolgehaltes in allen untersuchten Produkten. Die α-Tocopherolakkumulierung unterschied sich gemäß folgender Rangordnung: Eigelb > Leber > Fettgewebe >Musculus longissimus dorsi. Die Nährstoffdichten betrugen 28.8, 7.3, 0.9 und 1.2 mg α-Tocopherol/MJ für Eigelb, Leber, Fettgewebe und Musculus longissimus dorsi der jeweiligen mit Vitamin E supplementierten Gruppe. Diese Ergebnisse zeigen, daß Fleisch, mit Ausnahme des Hähnchenschenkels, von Tieren mit supplementierten Diäten kein bedeutender Vitamin E-Lieferant ist. Hingegen wurde Eigelb durch fütterungsbedingte Modifikation zu einer guten Vitamin E-Quelle.

Summary

The α-tocopherol content of different meat cuts was examined. Chicken thigh had the highest vitamin E content, followed by chicken breast and pork shoulder (p<0.05). The lowest concentrations were found in longissimus dorsi muscle from pork, beef, veal and in beef shoulder. Considering the average daily lean meat consumption (105 g) in Switzerland, recommendation for daily vitamin E intake was met to 3 %.

Supplementation of 200 mg α-tocopherol acetate/kg feed to pigs and laying hens significantly increased the α-tocopherol content in all examined products. The α-tocopherol accumulation differed according to the following ranking: egg yolk > liver > adipose tissue > musculus longissimus dorsi. The α-tocopherol:energy ratios were 28.8, 7.3, 0.9 and 1.2 mg/MJ for egg yolk, liver, adipose tissue and longissimus dorsi muscle of the vitamin E supplemented groups, respectively. The results showed that meat, with the exception of chicken thigh, is not an important supplier of vitamin E, not even from animals fed a vitamin E enriched diet. Egg yolk became a good source of vitamin E for human nutrition by dietary modification.

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Leonhardt, M., Gebert, S. & Wenk, C. Vitamin E content of different animal products: Influence of animal nutrition. Z Ernährungswiss 36, 23–27 (1997). https://doi.org/10.1007/BF01618896

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