Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(6), 75-80 | DOI: 10.11118/actaun201260060075

Trace element content in market eggs in Bohemia

Hana Dušová1, Jan Trávníček1, Zdeněk Peksa1, Daniel Falta2, Václav Pálka1
1 Katedra veterinárních disciplín a kvality produktů, Jihočeská univerzita v Českých Budějovicích, Studentská 13, 370 05 České Budějovice, Česká republika
2 Ústav chovu a šlechtění zvířat, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika

The aim of this study was to analytically determine the content of iodine, copper, zinc and manganese in the yolk of consumer eggs in Bohemia in 2007 and 2008. Investigated eggs originated from six so called intensive farms with large flocks (118 eggs) and twelve backyard farms or small-flock establishments (136 eggs) from three administrative regions in Czech Republic. Eggs from intensive farms were obtained directly from the establishments, while eggs from backyard farms were purchased from private farmers. Spectrophotometric Sandell-Kolthoff method was used for determination of iodine content in egg yolk, while Cu, Zn and Mn levels were determined by the flame absorption spectrophotometric method (AAS). The average content in fresh egg yolk from intensive farms was determined to 0.9 ± 0.2 for iodine, 8.4 ± 2.1 of copper, 29.8 ± 6.9 of zinc and 1.2 ± 0.3 of manganese, all in mg.kg-1, as compared to yolk content from backyard farms with 0.4 ± 0.04 mg.kg-1 of iodine, 10.8 ± 2.9 of copper, 32.5 ± 6.9 of zinc and 1.5 ± 0.3 of manganese. Average content of copper, zinc and manganese was lower in egg yolks from intensive farms (P < 0.01) as compared to the egg yolks from backyard farms, while iodine content on the other hand was lower in eggs from backyard farms (P < 0.01).

Keywords: egg yolk, iodine, copper, zinc, manganese
Grants and funding:

This study was supported by the Project 022/2010/Z of the Grant Agency of the University of South Bohemia and Internal Grant Agency of FA, MENDELU TP 1/2012.

Received: July 17, 2012; Prepublished online: July 19, 2013; Published: July 20, 2013  Show citation

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Dušová, H., Trávníček, J., Peksa, Z., Falta, D., & Pálka, V. (2012). Trace element content in market eggs in Bohemia. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 60(6), 75-80. doi: 10.11118/actaun201260060075
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