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為何刷牙后吃橘子味道不好
Toothpaste and orange juice don’t mix.
牙膏和果汁不能混合。
What is it about toothpaste that transforms the sweet flavor of orange juice into something so atrociously bitter?
為什么牙膏會讓橙汁中的甜味變得如此苦澀？
To get to the bottom of this phenomenon, we’re going to have to cover a couple of bases here,folks, and the first one is the sense of taste.
為了探究這種現(xiàn)象的根源，我們要為大家介紹兩方面的基礎(chǔ)知識。首先就是味覺。
Your mouth is a powerful chemical sensor equipped with around 10,000 individual taste buds, with up to 100 individual taste receptor cells each.
你的口腔是一個(gè)非常強(qiáng)大的化學(xué)物質(zhì)感應(yīng)器，配有大約1萬個(gè)獨(dú)立的味蕾，每個(gè)味蕾擁有100個(gè)獨(dú)立的味覺接收器。
These taste buds are specifically programmed to detect five different types of tastes:sweet, sour, bitter, salty, and umami.
這些味蕾用來檢測五種不同的味道：甜，酸，苦，咸和鮮味。
Taste is a chemical matching game of sorts. When you eat a piece of food,it distributes molecules and ions with specific shapes throughout your mouth.
味道是一種化學(xué)配對游戲。當(dāng)你吃下一點(diǎn)食物時(shí)，會在口腔中分解為分子和不同形狀的離子。
Each taste receptor cell is designed to match up with a specific molecule and ignore all others.
每一個(gè)味道接收器細(xì)胞用來與特定的分子匹配，而忽略其他的。
Although this matching game is pretty accurate,there are other factors that can affect the way your mouth interacts with taste molecules.
盡管這個(gè)配對游戲非常精確，然而還有其他因素會影響口腔與味道分子的互動。
Ok. So that’s enough for taste now.
好了，關(guān)于味道就說到這里。
Let’s talk about toothpaste.
讓我們說一下牙膏。
Now you see, in the average tube of toothpaste,you’re going to find four primary ingredients:water, which adds body to the paste; abrasives, which help remove plaque from teeth; fluoride,which helps prevent cavities; and detergents,the components that foam up when brushing.
現(xiàn)在，你可以看到，每一管牙膏都會有四種主要成分：水，讓牙膏成型；磨料，幫助清除牙齒上的噬菌斑；氟化物，預(yù)防蛀牙；清潔劑，刷牙的時(shí)候產(chǎn)生泡沫。
The most commonly used detergent in toothpaste is a compound called sodium lauryl sulfate or SLS for short. SLS is used in tons of different household products and although SLS works wonders in producing suds, it has been noted for its strange effects on our mouth’s ability to taste. As it turns out, SLS suppresses our sweet receptors and destroys a compound in our mouths called phospholipids,which inhibit our bitterness receptors.
牙膏中最常用的清潔劑就是一種叫做月桂基磺酸鈉的化合物，簡稱SLS。SLS用于大量家用產(chǎn)品，還用于生產(chǎn)肥皂。這種化合物對我們的口腔品嘗味覺的能力產(chǎn)生非常大的影響。它會抑制我們的甜味接收器，破壞口腔中位于苦味接收器上一種叫做磷脂的化合物。
This opens up a clearer pathway for bitter molecules to reach your receptors.
這為苦味分子到達(dá)接收器打開了更通暢的通道。
This is the most widely accepted explanation for why orange juice turns from this to this after you brush your teeth.
這就是刷牙后吃桔子味道很奇怪最容易被人接受的解釋。
