Astaxanthin from Crayfish (Procambarus clarkii) as a Pigmentary Ingredient in the Feed of Laying Hens

Chicken egg yolks generally owe their color to yellow carotenoids. The addition of synthetic red pigments allows changes in color, from the original yellow to red hues which may be more appealing to consumers in certain markets. Our aim has been to test whether ground crayfish shells, which are a ri...

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Published inGrasas y aceites (Sevilla) Vol. 59; no. 2; pp. 139 - 145
Main Authors Perez-Galvez, A, Negro-Balmaseda, JJ, Minguez-Mosquera, MI, Cascajo-Almenara, M V, Garrido-Fernandez, J
Format Journal Article
LanguageSpanish
Published 01.06.2008
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Summary:Chicken egg yolks generally owe their color to yellow carotenoids. The addition of synthetic red pigments allows changes in color, from the original yellow to red hues which may be more appealing to consumers in certain markets. Our aim has been to test whether ground crayfish shells, which are a rich and natural source of astaxanthin, produce detectable changes in the coloration of egg yolks through the accumulation of this carotenoid. Laying hens were fed with a commercial feed mixed with crayfish powder and the carotenoid profiles of the yolks in the eggs laid during the trial were monitored by HPLC. The analyses showed a progressive increase in the astaxanthin concentration in the egg yolks, reaching similar levels to those obtained for the rest of present carotenoid pigments.Original Abstract: La yema de huevo de gallina debe su coloracion a la pre-sencia de carotenoides de tonalidad amarilla. La adicion de colorantes sinteticos de tonalidades rojas permits modificar e incrementar la coloracion de la yema desde el amarillo original a tonos rojos que pueden ser demandados en ciertos mercados segun las preferencias del consumidor. El objetivo del trabajo fue probar si un triturado obtenido a partir de ca-parazones de cangrejo, que es una fuente natural y rica en astaxanteno, produce cambios detectables en la coloracion de la yema de huevo por la acumulacion de dicho carotenoi-de. Las gallinas ponedoras se alimentaron con un pienso co-mercial al que se adiciono triturado de caparazon de cangrejo. Se realizo un seguimiento de los cambios en la composicion carotenoide (mediante HPLC) de la yema de los huevos puestos durante el periodo de alimentacion su-plementada. Los analisis mostraron una progresiva incorpo-racion de astaxanteno que alcanzo niveles similares al resto de carotenoides presentes inicialmente en la yema.
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ISSN:0017-3495