A kindergarten teacher in the central province of Henan was detained-accused of adding sodium nitrite, which can be toxic in large doses, to the meal boxes of at least 23 pupils late last month.

部省份河南省一幼教被拘留，他被指控上月底在至23生的饭盒添加亚硝酸钠，大剂量硝酸盐对人体有毒。

It's where it's a chemical reaction within a non-oxygen environment which keeps the outside of the meat pink so the hemoglobin gets locked in uh so using the nitrites something to do with that.

这是在无氧环境发生的化反应，使肉的外部保持粉红色，因此血红蛋白被锁住，嗯，所以使用亚硝酸盐与此有关。

Bacon, ham, salami, sausages and hot dogs contain chemicals that are harmful for us, like nitrates and nitrites that can damage the DNA in our digestive system and lead to cancer.

培根，火腿，香肠，香肠和热狗含有对我们有害的化物质，像硝酸盐和亚硝酸盐，可以破坏我们消化系统的DNA，并导致癌。

At first they used a different chemical called amyl nitrite, a compound that we now know has a nitrite group that dilates blood vessels and lowers blood pressure.

起初，他们使用了一种不同的化物质，称为亚硝酸戊酯，我们现在知道这种化合物有一个亚硝酸盐基团，可以扩张血管并降低血压。

These nitrites react with amino acids during cooking, forming nitrosamines, which are known carcinogens, increasing your risk of developing cancer.

这些亚硝酸盐在烹饪过程与氨基酸发生反应，形成亚硝胺，亚硝胺是已知的致癌物质，会增加患癌的风险。

Part of this cycle takes place in the mouth, so there is naturally plenty of nitrite in our saliva.

这个循环的一部分发生在口腔，所以我们的自然有大量的亚硝酸盐。

On the other hand, nitrites help to prevent bacterial growth that can cause botulism.

另一方面，亚硝酸盐有助于防止细菌生长的特性可导致肉毒毒。

During heat processing of the meat, a small portion of the additive sodium nitrite is suspected to turn into the cancerous nitrosamines like the earlier mentioned NDMA.

在肉类的热处理过程，人们怀疑一小部的分添加剂亚硝酸钠会转化为致癌的亚硝胺，就像之前提到的 NDMA。

But by around 1880, doctors began to realize that nitroglycerine was even more effective and faster acting for heart problems than amyl nitrite.

但是到了 1880 年左右，医生们开始意识到，硝酸甘油比亚硝酸戊酯对心脏病的疗效更有效、作用更快。

But, the acidic nature of our stomach is suspected to allow nitrates and nitrites to turn into nitrosamines in the body during digestion.

但是，人们怀疑我们的胃的酸性是让硝酸盐和亚硝酸盐在消化过程在体内转化为亚硝胺的原因。

But at the time no one knew why amyl nitrite worked only that it did.

但当时没有人知道为什么亚硝酸戊酯会起作用。

Not only are 4 strips of cooked bacon worth nearly half your recommended daily intake for salt, but most bacon and other things like lunch meats are treating with a chemical called sodium nitrite.

不仅因为4条培根的含盐量就已接近每日所需的一半，而且大多数培根或午餐肉等食品都含有一种叫做亚硝酸钠的化物质。

In fact, in the body, there is a cycle where nitrate is turned into nitrite and nitrite is turned into nitric oxide then nitric oxide is turned back into nitrate.

事实上，在人体内有一个循环，在这个循环，硝酸盐转化为亚硝酸盐，亚硝酸盐转化为一氧化氮，然后一氧化氮又转化为硝酸盐。

A diet high in sodium nitrites may also lead to a decrease in your body's ability to transport oxygen properly in your red blood cells.

高亚硝酸钠的饮食也可能会降低你身体在红细胞输送氧气的能力。

As the paper explains, nitrate and nitrite have been shown to be good for blood pressure, mitochondrial efficiency, exercise performance, and have a therapeutic effect on pulmonary hypertension.

论文解释道，硝酸盐和亚硝酸盐对血压、线粒体效率、运动能力都有一定的改善作用，对肺动脉高压有一定的治疗作用。

Well, Nitrosamines are the cancerous compounds suspected to form from the nitrate and nitrites found in processed meat.

人们怀疑亚硝胺是由加工肉类的硝酸盐和亚硝酸盐形成的癌化合物。

In fact, celery juice which has very high concentrations of nitrate, and is used to make the all natural “no added nitrates or nitrites” processed meat.

事实上，芹菜汁含有很高的硝酸盐，用来制作纯天然的" 不添加硝酸盐或亚硝酸盐" 的肉制品。

If it contains something like celery root powder, that's just another form of added nitrates.

如果含有芹菜根粉这类成分，那只是另一种添加的亚硝酸盐形式。

Direct nitrite donors, in my opinion, work better, but they are harder to time.

在我看来，直接的亚硝酸盐供体效果更好，但它们更难掌握使用时机。

And there used to be a fair amount of conversation about the amount of nitrites in hot dogs, but I think the evidence suggests that unless you're eating really excessive amounts of hot dogs, that it's probably OK to enjoy one.

过去有很多关于热狗亚硝酸盐含量的讨论，但我觉得证据表明， 除非你吃大量的热狗，否则偶尔享受一根应该是没问题的。