类胡萝卜素

lèi hú luó bo sù

类胡萝卜素:(Carotenoid)一类重要的天然色素的总称, 普遍存在于动物、高等植物、真菌、藻类的黄色、橙红色或红色的色素之中。

链状或环状含有8个异戊间二烯单位、四萜烯类头尾连接而成的多异戊间二烯化合物。是一类不溶于水的色素,存在于植物和有光合作用的细菌中,在光合作用过程中起辅助色素的作用。天然类胡萝卜素已发现有600余种,在人体中存在的主要有α-胡萝卜素、β-胡萝卜素、叶黄素、玉米黄质、番茄红素以及β-隐黄素等。约有10%的类胡萝卜素是维生素A的前体。除可转变为维生素A外,类胡萝卜素在抗氧化、调节免疫、延缓衰老等方面具有重要作用。人体不能自身合成,蔬菜、水果是类胡萝卜素的良好来源。

Chain certificate or cricoid contain Xi of unit of the 2 Xi between 8 different the fifth of the ten Heavenly Stem, 4 terpene kind compound of the 2 Xi between the much surprise the fifth of the ten Heavenly Stem that head end joins and becomes. Be a kind not dissolve the pigment at water, in consist in plant and the bacterium that have photosynthesis, the effect of auxiliary pigment has in photosynthesis process. Natural kind carotene already discovered more than kinds 600, there basically is α in what exist in human body - carotene, β - carotene, lutein, corn is yellow red element of qualitative, tomato and β - concealed yellow element. The body before making an appointment with having kind of carotene of 10 % is vitamin A. Except can transform outside be vitamin A, kind carotene is fighting oxidation, adjust it is immunity, important to defer the respect such as consenescence to have action. Human body cannot oneself synthesis, vegetable, fruit is the good origin of kind of carotene.

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