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Component analysis
- Mar 06, 2017 -

Also known as vitamin a, vitamin [1], dry eye syndrome vitamins, such as retinol, is a cyclic unsaturated MONOHYDRIC ALCOHOLS, as pale yellow crystals, and hypoxia on the thermal stability and oxygen when heat labile and susceptible to UV damage. Vitamin a exists only in animals, plants, only original vitamin a-carotene and carotenoids. Α, β, γ-carotene and zeaxanthin in animal intestinal wall cells and carotenoids, enzymes in the liver, mammary glands can be converted into vitamin a. Carotene is β-carotene 90% in feed, very little other content, mainly maize yellow pigment in corn, therefore, carotenoid content in the feed in terms of β-carotene. In animals, low rate of absorption and transformation of beta carotene, and vary depending on the animal species.

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