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

这主要因为β-胡萝卜素与难以消化的纤维基质结在一起。

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

同时，有的产品当中的维生素 A β-胡萝卜素，而另一些则视黄醇棕榈酯，等等。

You see, similar to our earlier discussion with beta carotene and vitamin A, “folic acid” is not folate.

你看，和我们之前讨论的β-胡萝卜素和维生素A的情况类似，“”（folic acid）并（folate）。

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

这种牛奶颜色更白因为水牛无法消化吸收β-胡萝卜素，而β-胡萝卜素许多水果和蔬菜所含的一种橙色营养物质。

In fact, spitting in a tube has taught me that I don't convert beta-Carotene very well, by about 32% or so.

事实上，经过唾液采集检测发现，我对β-胡萝卜素的转化就很好，只有32%左右。

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，如果和油一同食用 β-胡萝卜素的吸收率可提高七倍。

A lot of foods contain antioxidants like vitamin E, and C, and beta carotene, which help protect our body from free radicals by neutralizing them.

许多食物都含有抗氧化剂，如维生素 E、C 和 β 胡萝卜素，它们通过中和自由基来帮助保护我们的身体免受自由基的侵害。

It would be better to get your vitamin A from fish roe or cod liver oil, good quality egg yolks, liver, rather than beta carotene.

获取维生素 A 的更好来源鱼卵、鱼肝油，优质蛋黄以及肝脏之类的食物 而β-胡萝卜素。

It is called " golden rice" because the rice is yellow. It has been genetically changed, or modified, to produce beta carotene, a form of Vitamin A.

这种稻米因为颜色黄色被称为“金色稻米”。这种稻米经过基因改造来生成胡萝卜素，维生素A的一种。

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维生素 A，而一种叫做β-胡萝卜素的类胡萝卜素，它一种“维生素原”，一种可以转化成维生素的物质。

She said in Italy, mozzarella is sometimes made with milk from water buffalo. The milk is whiter because the animal cannot digest beta carotene, an orange nutrient in many fruits and vegetables.

她说，在意大利，马苏里拉奶酪有时用水牛的牛奶制作的。这种牛奶更白因为水牛能消化吸收β-胡萝卜素（水牛会将全部的β-胡萝卜素在肠道分解代谢，很少有β-胡萝卜素被贮存于机体的其他部位），β-胡萝卜素许多水果和蔬菜中的一种橙色营养物质。