And the sweet smell is this particular ketone that is given out; it's called acetone.

甜香味尤其是这种酮所散发出，它学名是丙酮。

Not only that, as he shows here, the Alzheimer's brain actually uptakes ketones better than controls.

不仅如此，正如他在这里所展示与对照组相比，老年痴呆症患者大脑摄取酮数量要更多。

We use nitrogen to clean the lacquer, and we use methyl ethyl ketone to keep the stylus clean.

我们用氮气来洁漆，我们用甲乙酮来保持唱洁。

However, the Alzheimer's brain has no problem using ketones for energy.

然而，老年痴呆症患者大脑将酮作为其能量来源却没有任何题。

And when your body breaks down fats without much glucose around, it produces compounds called ketone bodies.

当你身分解没有太多葡萄糖脂肪时，它会产生一种叫做酮合物。

Babies may be living on ketones even before birth.

甚至在出生前，婴儿可能就靠酮过活。

But lactation can also increase the production of ketones.

但是哺乳也会加剧酮类产生。

Over these 3 days, they will monitor her blood sugar and ketones.

在这三天内，他们会测量她血糖和酮水平。

Very simply put, ketones are a source of energy naturally produced in the body from fat when dietary carbohydrate is restricted enough.

简而言之，当人碳水合物摄入受限时酮——人内脂肪代谢产物——便自然而然地成了大脑能量新来源。

This works for the time being, but ultimately only 75% of the brain's energy requirements can come from ketones. It still needs glucose!

这暂时会起到作用，但最终酮类只能够满足大脑所需能量75%，它仍然需要葡萄糖！

Some research suggest that our bodies can adapt to other energy sources like ketone bodies and be less reliant on carbs.

一些研究表明，我们身可以适应其他能量来源，如酮，减少对碳水合物依赖。

Oxford University Emeritus Professor of Chemistry Gus Hancock says it is due to the build-up of chemicals called ketones in the patient's blood.

牛津大学名誉教授学加斯·汉考克表示这是由于被称为酮学物质在病人血液中累积所致。

Esters are just like a ketone mixed with an ether.

酯就像酮与醚混合。

By functional group I mean an alcohol group or ketone group or aldehyde group or acid group.

官能团是指醇基或酮基或醛基或酸基。

To get that, we knock the 'A' off and harden that 'C' into a 'K' and get a 'Ketone'.

为此，我们将“A”敲掉并将“C”硬为“K”并得到“酮”。

So, the more caffeine, the more ketones.

所以，咖啡因摄入越多，产生酮就越多。

And it has been shown that ketones can provide up to 60% of the energy requirements for an adult brain.

研究表明，酮可以提供人大脑所需能量 60%。

And, they enhance the production of ketones.

提高酮产生。

However, this doesn't matter if getting more MCT oil into the stomach and getting more ketones into the brain doesn't improve cognitive function.

然而，如果增加 MCT 油以及大脑酮摄取量不能提升认知功能话，这么做就毫无意义了。

So yeah, when we have a carbonyl in the middle of a carbon chain, that is a ketone functional group.

所以是，当我们在碳链中间有一个羰基时， 那就是酮官能团。