常見例句Any of a class of yellow to red pigments,including the carotenes and the xanthophylls. 類胡蘿卜素一類黃色至紅色的色素,包括胡蘿卜素和葉黃素"Carotenes are converted in the body into vitamin A, but, unlike the vitamin, they are not toxic even at high doses. 在許多動(dòng)物的肝臟中可轉(zhuǎn)變?yōu)榫S生素A,但即使在高劑量下也不像維生素那樣有毒。Less favorable results are obtained with antihistaminics, beta carotenes, and psoralen plus ultraviolet A light (PUVA). 日光性皮炎是一種由光線引起的、發(fā)生于暴露部位的過敏反應(yīng)性皮膚病。Carotenes that have not undergone transformation have greater anti-oxidation effects. 未接受變革的胡蘿卜素有更加了不起的抗氧化作用。Typical markers are the porphyrins, pristine, phytane, steranes, carotenes and pentacyclic triterpanes. 典型的標(biāo)志如卟啉、姥鮫烷、植烷、留烷、胡蘿卜烷、以及五環(huán)三萜烷。Less faorable results are obtained with antihistaminics, beta carotenes, and psoralen plus ultraiolet A light (PUA). 日光性皮炎是一種由光線引起的、發(fā)生于暴露部位的過敏反應(yīng)性皮膚病。 返回 Carotenes