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Raman spectroscopic analysis of the carotenoid concentration in egg yolks depending on the feeding and housing conditions of the laying hens
Author(s) -
Hesterberg Karoline,
Schanzer Sabine,
Patzelt Alexa,
Sterry Wolfram,
Fluhr Joachim W.,
Meinke Martina C.,
Lademann Jürgen,
Darvin Maxim E.
Publication year - 2012
Publication title -
journal of biophotonics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 66
eISSN - 1864-0648
pISSN - 1864-063X
DOI - 10.1002/jbio.201100036
Subject(s) - carotenoid , raman spectroscopy , chemistry , fodder , food science , botany , biology , physics , optics
Resonance Raman spectroscopic measurements are suited to analyze the concentration of carotenoid antioxidants in biological samples. Previously, it has been shown that the carotenoid concentration of nutritional egg yolks has a direct influence on the carotenoid content of human skin in vivo. In the present study, resonance Raman spectroscopy was used to analyze the carotenoid concentration in the yolks of hen eggs, which were housed in battery cages or alternatively on free‐range grassland. The egg yolks of hens, which had access to grassland, contained approximately double the amount of carotenoid concentration than the egg yolks of hens housed in battery cages ( p < 0.001). The kinetics of the carotenoid concentration in the egg yolks, depending on fodder, housing and weather conditions, were investigated. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)