Pigments in Eggs: a) Why is it that if you shine a white light on an...
Pigments in Eggs:
a) Why is it that if you shine a white light on an egg yolk it still appears yellow?
b) Egg yolks may get colour from carotenoids. Explain why feeding chickens carotenoids results in deeper yellow egg yolks but does not turn egg whites yellow?
Homework Answers
Problem a) Why is it that if you shine a white light on an egg yolk it still appears yellow?
ans: egg contain yellow carotenoid pigment. wthus hen white light pass through it yellow fluorescence appear and shows yellow appearance.
Problem b) Egg yolks may get colour from carotenoids. Explain why feeding chickens carotenoids results in deeper yellow egg yolks but does not turn egg whites yellow?
ans: egg yolk color depend on hen's diet. If a hens given plenty of yellow-orange plant pigments normally xanthophylls in their diet, the xanthophylls will be deposited in the egg yolk. thus feeding chickens carotenoids results in deeper yellow egg yolk. egg white contain plenty of protein and calcium. as a result of plenty calcium content, egg whites turns in white colour and not shows yellow appearance.
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Pigments in Eggs:
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