Where is the difference of carrotene and vitamin?

Where is the difference of carrotene and vitamin?
Summary:To admit as, absorb voluntarily vitamin A, need energy, absorb speed to be 7-30 times faster than carrotene. The admitting as physics of carrotene, how much is the absorbing amount with the intaking amount relevant. 2,Chyle particle absorb the intersection of cytobrush and the intersection of form and reason, near in order to absorb to intestine, skin cells are absorbed from the mucous membrane of small intestine; .
In 1929, Moore found, the big mouse which lacked vitamin A can improve the internal vitamin A level notably after mending and raising - carrotene through the experiment, thus has verified carrotene can be turned into vitamin A in the body and given play to the role of vitamin A, so it is original to also called vitamin A.
Central space have the same the intersection of alkene and chain much on the chemical constitution of carrotene, according to exist at the intersection of Zhi and fragrant the intersection of ketone and ring or the intersection of base and kind of group of both ends its having , , usually waits for a lot of differently to construct the body red on , , , the tomato. It is the widest that - carrotene is distributed in carrotene, content is the most. Have biological activity of vitamin A in constructing the body numerously and differently most. Exist with the chlorophyll together in green leaves, there are many in the root of the carrot too, the maximum absorption amount in chloroform is 497~466 millimicrons. - carrotene is insoluble in water and alcohol, soluble in benzene, chloroform, two carbon sulfide,etc.. - carrotene exists with - carrotene together in the roots of green leaves and carrot, there is generally less content. Fastening the luminosity [ ] of its benzene solution
18cd=+385 degrees. The maximum absorption amount in chloroform is 485-454 millimicrons. Distribution in the organism of - carrotene is limited. The maximum absorption amount in chloroform is 508.5,475,446 millimicrons.
Supersession and absorbing
The vitamin A and absorption of carrotene are different. To admit as, absorb voluntarily vitamin A, need energy, absorb speed to be 7-30 times faster than carrotene. The admitting as physics of carrotene, how much is the absorbing amount with the intaking amount relevant. The absorption position of carrotene contains carrotene a pair of oxidase in small intestine cells in the small intestine, carrotene entering small intestine cells under its function is resolved into retinene or retinol.
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