Consult the egg yolk coloring chart below to find out about the different yolk colors and the quality of their feed. A lousy egg yolk color is likely pink, green, or iridescent. Such eggs may be contaminated by Pseudomonas bacteria and are not safe for consumption. Also, if the white is watery, the egg may be too old and not fit to eat.

The options for measuring egg yolk color are as follows 1: HunterLab Scale: An objective analysis that measures lightness, redness, and yellowness with mechanical equipment such as a colorimeter that expresses color according to the HunterLab Scale.

The dsm-firmenich YolkFan TM offers a simple, accurate and consistent means of measuring egg yolk color. To ensure optimal accuracy during measurement, the following factors should be …

Jan 6, 2025 · Poultry experts track yolk colors using the DSM Yolk Color Fan, a 16-scale color index used in the industry to mark yolk color, with each number corresponding with a different shade.

Mar 11, 2023 · Egg yolks can vary in colour from almost white through pale yellow to deep orange, depending on the diet and health of the hens that lay them. The colour comes from a natural pigment called xanthophylls, which is found in the feed that hens consume.

Mar 6, 2025 · Poultry experts use a tool called the DSM Yolk Colour Fan, which is a 16-scale colour index, to measure and categorise yolk colour. On this scale, a pale yellow yolk is rated as a 1, while a deep orange yolk is a 16. Several dietary …

How To Measure Egg Yolk Color The options for measuring egg yolk color are as follows1: HunterLab Scale: An objective analysis which measures lightness, redness and yellowness with mechanical equipment such as a colorimeter that expresses …

We compare visual evaluation of yolk colour estimated by the usual method applying La Roche scale with spectro-photometric determination of β-carotene by AOAC method, and by new rapid analyser iCheckTM Egg photometr (Bio Analyt).

The color of the egg yolk is traditionally expressed in “Roche values” from 1 to 15. The name “Roche” here refers to the color fan published by Roche’, now DSM Nutrition Products. Our measuring instruments work with an R-G-B sensor whose filter curves correspond to the human eye (3-range method).

Jan 17, 2025 · Though you probably won’t encounter green eggs and ham anytime soon (but it’s possible), yolk colours can vary from the palest yellow to reddish brown. What affects the colour of egg yolks? Why...