An Evaluation of a Commercially Available Marigold Concentrate and Paprika Oleoresin on Egg Yolk Pigmentation

Association of Official Analytical Chemists, 1975 Brown, 1938, The influence of pimento pigments on the color of the egg yolk of fowls, J. Biol. Chem., 122, 655, 10.1016/S0021-9258(18)74195-1 Couch, 1971, The effect of adding canthaxanthin and beta-apo-8'-carotenal to laying diets containing yellow corn and alfalfa on egg yolk pigmentation, Brit. Poultry Sci., 12, 49, 10.1080/00071667108415853 Fletcher, D. L., 1977. Factors affecting the measurement and utilization of xanthophylls in the egg yolk and broiler skin. Ph.D. dissertation, University of Florida, Gainesville, FL. Fletcher, 1980, An evaluation of the AOAC method yolk color analysis, Poultry Sci., 59, 1059, 10.3382/ps.0591059 Fletcher, 1978, Yolk color characteristics, xanthophyll availability, and a model system for predicting egg yolk color using beta-apo-8'-carotenal and canthaxanthin, Poultry Sci., 57, 624, 10.3382/ps.0570624 Francis, 1975 Fry, 1974, Reflectance colorimetric evaluation of egg yolk pigmenatation, J. Food Sci., 39, 508, 10.1111/j.1365-2621.1974.tb02935.x Halloran, 1970, Review of the most important xanthophyll products in the US, Feedstuffs, 42, 31 Mackay, 1963, Yolk color resulting from different levels of paprika extract in the ration, Poultry Sci., 42, 32, 10.3382/ps.0420032 McCready, 1973, Palatability and colorimetric characteristics of sponge cakes prepared with egg yolks of varying color intensities and hues, Cereal Sci. Today, 18, 202 McCready, 1973, Colorimetric characterization of egg yolk and egg yolk products, J. Food Sci., 38, 175, 10.1111/j.1365-2621.1973.tb02807.x Morgan, 1927, Waste pimento pepper for coloring egg yolks, 147 Nelson, 1968, Feed pigments. 2. The influence of feeding single and combined sources of red and yellow pigments on egg yolk color, Poultry Sci., 47, 924, 10.3382/ps.0470924 Steel, 1960 Sunde, 1974, Carotenoids in poultry production