英语词汇“retinene”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

retinene

释义

retinene Biochem.|ˈrɛtɪniːn|
[f. retina + -ene.]
Either of two closely related yellow carotenoids, the aldehydes of vitamins A₁ and A₂ respectively (spec. that of the former), which occur esp. in the retina combined with opsin as rhodopsin; (sometimes followed by distinguishing numeral). Now more usu. known as retinal.
1934G. Wald in Nature 14 July 65/1 In the retinas of dark adapted animals, no xanthophyll and only a trace of vitamin A occurs. Instead their chloroform extracts contain a third carotenoid with novel properties. I have named this substance retinene.1950Sci. News XV. 17 Kühne found, when visual purple is acted on by light, that a new substance is formed which he called visual yellow. The latter has now been shown to be closely related to, if not identical with, the aldehyde of vitamin A₁, called retinene-1.1956Nature 28 Jan. 176/1 In the retina, the retinene formed by bleaching rhodopsin ordinarily is reduced to vitamin A.1970Ibid. 22 Aug. 778/1 Vision..is triggered by isomerization of the carotenoid, retinene.

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