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Tuesday, February 21, 2017

Beta-carotene 15,15'-monooxygenase - Wikipedia

In general, carnivores are poor converters of ionone-containing carotenoids, and pure carnivores such as cats and ferrets lack beta-carotene 15,15'-monooxygenase and cannot convert any carotenoids to retinal (resulting in none of the carotenoids being forms of vitamin A for these species). They must have preformed vitamin A in their diet.


https://en.m.wikipedia.org/wiki/Beta-carotene_15,15%27-monooxygenase

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