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

她说蛋黄颜色主要是由鸡吃类胡萝卜引起。

They have betacarotene, which is an important part of the vitamin A pathway.

它们有β胡萝卜，这是生 A 途径重要组成部分。

The milk is whiter because the animal cannot digest beta carotene, an orange nutrient in many fruits and vegetables.

这种牛奶颜色更白是因为水牛无法消化吸收β-胡萝卜，而β-胡萝卜是许多水果和蔬菜所种橙色营养物。

Red and purple hues stem from secondary pigments called anthocyanins, while carotenoids and xanthophylls yield oranges and yellows, respectively.

红色和紫色色调来自花青等辅助色，而类胡萝卜和叶黄分别产生橙色和黄色。

This is mostly because the beta carotene is bound up in a hard to digest fiber matrix.

这主要是因为β-胡萝卜与难以消化纤结合在起。

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

最后点是，类胡萝卜吸收效率随着饮食中类胡萝卜摄入升高而降低。

This study found that the bioefficacy of beta-carotene from a mixed diet is only 1: 21.

这项研究发现，混合性膳食中β-胡萝卜生物效能仅为二十分之。

Carotenoids are a natural coloring in plants.

类胡萝卜是植物中天然色。

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

β-胡萝卜之类类胡萝卜除了能转化为生 A 以外还有其它功能。

In a series of studies, after 3 days of storage, frozen broccoli had higher levels of Vitamin C and Beta-Carotene.

在系列研究中，经过3天冷冻储存西兰花有更高水平生C和胡萝卜。

Then, one might be providing Vitamin A as beta carotene where another provides it as retinyl palmitate and so on.

同时，有产品当中生 A 是β-胡萝卜，而另些则是视黄醇棕榈酸酯，等等。

The tomato-based cold soup is loaded with carotenes, vitamin C and polyphenols, which researchers think may help lower blood pressure.

以番茄为础冷汤富胡萝卜、生 C 和多酚，研究人员认为这可能有助于降低血压。

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

它们颜色，实际上从红色到紫色不等，来自类胡萝卜等色，它们用来捕捉光能。

But you wouldn't want to rely on the provitamin beta-carotene to meet your Vitamin A requirements.

但是你不能指望β-胡萝卜来满足人体对生 A 需求。

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

黄色和橙色核果类水果中类胡萝卜量很高，如桃子，这些类胡萝卜会转变成他命 A，具有抗氧化作用。

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

类胡萝卜与绿茶中 EGCG 等多酚起提供天然防晒保护。

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色化合物，帮助它吸收阳光，并使它看起来呈红粉色。

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

Farris 表示， 类胡萝卜和多酚会积聚在皮肤中并吸收各种波长阳光。

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，如果和油同食用 β-胡萝卜吸收率可提高七倍。

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

它们出生时候是灰色，但是由于它们食用甲壳纲动物体内叫做类胡萝卜东西变成了粉色。