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

她说蛋黄的颜色主要是由鸡吃的类胡萝卜素引起的。

Well those foods get their color from compounds called carotenoids and they are sometimes used as food coloring.

这些食物的颜色来自一种叫做类胡萝卜素的化合物，它们有作食色素。

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能转化为维生素 A 以外还有其它功能。

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。

Carotenoids are a natural coloring in plants.

类胡萝卜素是植物中的天然色素。

Carotenoids, along with polyphenols like EGCG in green tea, offer natural sun protection.

类胡萝卜素与绿茶中的 EGCG 等多酚一起提供天然防晒保护。

Carotenoids and polyphenols accumulate in skin and absorb sunlight of various wavelengths, according to Farris.

Farris 表示， 类胡萝卜素和多酚会积聚在皮肤中并吸收各种波长的阳。

Their color, which actually ranges from red to purple, comes from pigments like carotenoids, which they use to capture light energy.

它们的颜色，实际上从红色到紫色不等，来自类胡萝卜素等色素，它们来捕捉能。

The algae produces pigment compounds called carotenoids that help it absorb sunlight, and also make it look reddish-pink.

藻类会产生称为类胡萝卜素的色素化合物，帮助它吸收阳，并使它看起来呈红粉色。

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

黄色和橙色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。

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

它们出生的候是灰色的，但是由于它们食的甲壳纲动物体内叫做类胡萝卜素的东西变成了粉色。

Spoonbills are ingesting the carotenoid  a red pigment called canthaxanthin, which can be found in shrimp, crustaceans,   and algae.

琵鹭正在摄取类胡萝卜素，一种叫做角黄素的红色素，存在于虾、甲壳类动物和藻类中。

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，如果和油一同食 β-胡萝卜素的吸收率可提高七倍。

While carotenoids are present in most green plants, they only become visible each fall when chlorophyll gets broken down to save energy for the winter.

然而，类胡萝卜素在大多数绿色植物中都有，它们只有在叶绿素都分解掉之后才能看见从而为度过冬天保存能量。

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色来自类胡萝卜素，类胡萝卜素可以让胡萝卜呈橘色，在比如它们脸上的黑色来自黑色素，我们的头发和皮肤中就有黑色素。

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 和 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。

So many food chemists use Red Dye Number 40 because it's not only cheaper to make from scratch than it is to extract carotenoids from other food, but the color also lasts longer on the shelf.

所以许多食品化学家使 40 号红色染料，因为它不仅制作起来比从其他食物中提取类胡萝卜素便宜，而且其颜色在货架上也能持续更长间。