橘黄色的蔬菜含有大量的β-胡萝卜素。
最好以有机蔬菜和水果作为α-胡萝卜素的首要来源。
It`s best to consume organic vegetables and fruits as your primary source of alpha-carotene.
研究人员发现，当人们吃的是不含脂肪的色拉，实际上并没有吸收β-胡萝卜素或番茄红素等类胡萝卜素。
Researchers foundthat when people ate the fatfree salads, there was virtually noabsorption of the carotenoids4, like beta-carotene or lycopene.
该计划成功的机会很大，因为红薯是该地区的主食和主要农产品，而且目前种植的品种几乎不含胡萝卜素。
The plan has good chances of success, since sweet potato is a staple of the region's diet and agriculture, and the varieties currently grown contain little beta-carotene.
可能是雄性可以利用稀少的类胡萝卜素进行免疫防御和解毒，或者吸引雌性。
It may be that males can use scarce carotenoids either for immune defense and detoxification or for attracting females.
红鹮和火烈鸟一样，吃一些甲壳类动物，在体内生成胡萝卜素，就形成了它鲜艳的颜色。
The scarlet ibis, like the flamingo, gains its vibrant color from carotene derived from a diet of crustaceans.
传统的观点认为类胡萝卜素之所以有意义，是因为它们很罕见：健康的雄性可以比它们的同类寻找到更多的色素。
The conventional view is that carotenoids are meaningful because they are rare: healthier males can forage for more of the pigments than can their inferior counterparts.
大部分蛋白质存在于蛋清中，而维生素、矿物质、脂肪、类胡萝卜素和胆固醇则存在于蛋黄中。
Most of the protein is contained in the egg white, while vitamins, minerals, fats, carotenoids and cholesterol are contained in the yolk.
茶对健康的好处大多来自于抗氧化剂——在胡萝卜素、维生素E和维生素C 中也发现了抗氧化剂化合物，它能抑制沿身体血管形成的斑块。
Most of the purported health benefits of tea come from antioxidants—compounds also found in beta carotene, vitamin E, and vitamin C that inhibit the formation of plaque along the body's blood vessels.
欧文斯和奥尔森假设，如果类胡萝卜素是稀有的或对健康有要求的，则通过着色指示的类胡萝卜素的存在在配偶选择的背景下将是有意义的。
Owens and Olson hypothesize that the presence of carotenoids, as signaled by coloration, would be meaningful in the context of mate selection if carotenoids were either rare or required for health.
对几种动物的研究表明，在选择配偶时，雌性更喜欢鲜艳的类胡萝卜素着色的雄性。
Studies of several animal species have shown that when choosing mates, females prefer males with brighter carotenoid-based coloration.
因此，接下来的问题是，蚜虫从哪里获得类胡萝卜素的基因？
So the next question was, where did the aphids get the genes?
保守烹饪如蒸，煮只造成少量的营养物质损失如叶酸，而加强了对其他物质的生物利用度，如类胡萝卜素。
Conservative cooking such as steaming or boiling causes only modest loss of some nutrients, such as folate, while enhancing the bioavailability of others, such as carotenoids.
大部分蛋白质存在于蛋清中，而维生素、矿物质、脂肪、类胡萝卜素和胆固醇则存在于蛋黄中。
Most of the protein is contained in the egg white, while vitamins, minerals, fats, carotenoids (orange/red/yellow pigments) and cholesterol are contained in the yolk.
黄色是胡萝卜素显示出来的。当在叶绿素产物高峰期的春季和夏季，这些叶子内的胡萝卜素被掩盖了。
The yellow is carotene, which is hidden during spring and summer as the leaves are at their peak of chlorophyll production.
杏子，新鲜或干燥的，富含贝它胡萝卜素。
叶黄素就是其中一种鲜明的黄色，而番茄红素是一种使得西红柿变红的类胡萝卜素。
Lutein is one that's a bright yellow. And lycopene is the carotenoid that makes tomatoes red.
放射性破坏的其中一种方式是产生促氧化的分子，所以，大量类胡萝卜素的供给可免受辐射之害。
One of the ways that radiation causes harm is by generating molecules that promote oxidation, so a good supply of carotenoids protects against such damage.
斯蒂芬认为这是由于水果和蔬菜补充了参加实验者的类胡萝卜素的含量，给他们的皮肤增加了更多的金色调。
Stephen believes that is because the fruits and vegetables upped the subjects' carotenoid levels and added more golden tones to their skin.
类胡萝卜素是一种可以预防心脏病的抗氧化剂，减低胆固醇，并预防癌症。
Carotenoids are antioxidants that help prevent heart disease, reduce "bad cholesterol" levels, and protect against cancer.
无论你听说过没有，现在，莫兰正坐在她的电脑前，研究蚜虫基因组的资料，查找负责类胡萝卜素的基因。
Anyway, Moran sat down at her computer and looked through the aphid genome for the genes that are responsible for carotenoids.
胡萝卜素形成黄色，另外还有花青素，使得夏季的末期和整个秋天都是一片红色和紫色的天地。
Underlying carotenoids give off a yellow hue, while anthocyanins, produced late in the summer and throughout fall, are responsible for the vibrant reds and purples.
更令人印象深刻的是蚜虫是走捷径才能产生类胡萝卜素的。
More impressive, aphids got their ability to make carotenoids through a major shortcut.
杏中还含有一些负责提高视力的类胡萝卜素。
It also contains carotenoids which is responsible for better vision.
胡萝卜、芒果、杏、南瓜、山芋含有丰富的隐黄素和贝塔胡萝卜素——这两种物质能减少患精神和身体疾病的危险。
Carrots, mangoes, apricots, pumpkins, and sweet potatoes are brimming with cryptoxanthin and beta-carotene-two substances that reduce the risk for a variety of mental and physical ailments.
这种颜色来自水果和蔬菜中的类胡萝卜素，它有助增加人体免疫力和维持生殖健康。
That tone comes from carotenoids in the fruit and veggies, which are linked to better immune defenses and reproductive health.
研究人员下一步将尝试解释为什么超高压能够增加类胡萝卜素的合成。
The researchers next hope to find out exactly how the high pressures are inducing the synthesis of more carotenoids.
几百万年前，蚜虫似乎是直接从产生类胡萝卜素的菌类身上拿走了产生类胡萝卜素的基因，再把这种基因合并到自己的基因组中。
Millions of years back, they apparently grabbed the genes for making carotenoids directly from a carotenoid-producing fungus. And then incorporated those genes into the aphid genome.
结果鳄梨和番木瓜的类胡萝卜素总量增加了大约50%，个别种类的类胡萝卜素增加量能达到500%。
Carotenoids in the avocado and papaya increased overall by about 50 percent, with some individual carotenoids rising more than 500 percent.
哈佛大学研究人员认为，这些被称为类胡萝卜素的植物化学物质，可以保护受老化损伤的视网膜。
These plant chemicals, known as carotenoids, protect your retinas from the damage of aging, according to Harvard researchers.
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