One last thing, the absorption efficiency of carotenoids decreases as the amount of dietary carotenoids increases.

最后一点是，类胡萝卜素的吸收效率随着饮食中类胡萝卜素摄入的升高而降低。

She says that yolk color is mainly caused by the carotenoids that chickens eat.

说蛋黄的颜主要是由鸡吃的类胡萝卜素引起的。

Carotenoids like beta-carotene have their own functions other than just conversion to Vitamin A.

β-胡萝卜之类的类胡萝卜素除了转化为维生素 A 以外还有其它功。

You might know this thanks to flamingos: They're born gray, but turn pink thanks to pigments called carotenoids in crustaceans they eat.

它们出生的时候是灰的，但是由于它们食用的甲壳纲动物体内叫做类胡萝卜素的东西变成了粉。

The yellow and orange stone fruits such as peaches are high in the carotenoids we turn into vitamin A and which are antioxidants.

黄的核果类水果中类胡萝卜素含量很高，如桃子，这些类胡萝卜素会转变成维他命 A，具有抗氧化作用。

Carrots have other carotenoids, but for beta carotene, you'd actually absorb about 7 times more beta-carotene if you took it suspended in oil.

胡萝卜中还有其它类胡萝卜素，如果油一同食用 β-胡萝卜素的吸收率可提高七倍。

Those on short-term organic diets do show higher levels of carotenoids, polyphenols, Vitamin C and E, LDL cholesterol, antioxidant activity, immune system markers, and ever higher semen quality.

那些短期内食用有机食品的人确实体内含有更多的类胡萝卜素、多酚、维生素 C E、低密度脂蛋白胆固醇、抗氧化活性、免疫系统标记，以及更高的精液质量。

So, it makes sense that this research from Ohio state found that avocado is a good way to help absorb carotenoids like beta-carotene and convert them to Vitamin A.

因此，俄亥俄州的这项研究发现言之有理，是说，牛油果有助于类胡萝卜素（如β-胡萝卜素）的吸收并将其转化为维生素 A。

This is because carrots don't contain Vitamin A but a carotenoid called beta carotene which is a “provitamin” — a substance that can be converted into a vitamin.

因为胡萝卜所含的并不是维生素 A，而是一种叫做β-胡萝卜素的类胡萝卜素，它是一种“维生素原”，一种可以转化成维生素的物质。

The cardinal's bright red comes from carotenoids, the same pigments that make carrots orange, while the black of its face is from melanin, the pigment that colors our hair and skin.

比如它们身上的鲜红来自类胡萝卜素，类胡萝卜素可以让胡萝卜呈橘，在比如它们脸上的黑来自黑素，我们的头发皮肤中就有黑素。