Evaluation of Egg Yolk Colour

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F14%3A43898323" target="_blank" >RIV/60461373:22330/14:43898323 - isvavai.cz</a>
Result on the web
<a href="http://www.agriculturejournals.cz/publishedArticles/CJFS/2014-32-3-213.pdf" target="_blank" >http://www.agriculturejournals.cz/publishedArticles/CJFS/2014-32-3-213.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Evaluation of Egg Yolk Colour
Original language description
We compare visual evaluation of yolk colour estimated by the usual method applying La Roche scale with spectrophotometric determination of beta-carotene by AOAC method, and by new rapid analyser iCheck (TM) Egg photometer (BioAnalyt). The eggs under consideration were purchased on a current Czech market. The eggs originated from various countries and various types of breeding including some specialities. The yolk colour varied between the values of 4-13 of La Roche scale. The carotenoid content expressed as beta-carotene measured by AOAC method varied between 11-87 mg/kg. The carotenoid content expressed as beta-carotene measured with the analyser iCheck (TM) Egg photometer was lower and varied between 7.5-68.5 mg/kg. The correlation between the colourhue measured visually and the carotenoid content was not proved. Slovak eggs from cages which contained 28.3 mg carotenoids in 1 kg of yolk had the darkest yolks (value 13), Czech bio eggs which contained 20.2 mg carotenoids in 1 kg of y
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
GM - Food industry
OECD FORD branch
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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