WEBVTT - Why Does Toothpaste Make Orange Juice Taste Bad?

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<v Speaker 1>Brought to you by the reinvented two thousand twelve camera.

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<v Speaker 1>It's ready. Are you welcome to stuff you should know

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<v Speaker 1>from how Stuff Works dot Com? Hi, and welcome to

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<v Speaker 1>the podcast. I'm Josh Clark, is staff writer here how

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<v Speaker 1>Stuff Works dot Com. And with me is my fellow

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<v Speaker 1>staff writer, the extraordinary Charles Bryant. Are you doing shut him?

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<v Speaker 1>Are you? Yeah? I'm just waking up so fantastic. Well,

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<v Speaker 1>you know, when you woke up this morning, you brush

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<v Speaker 1>your teeth. I did, and you know what, just to

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<v Speaker 1>prep myself for this, I drank some orange juice immediately

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<v Speaker 1>after I brush my teeth. Well, I think we all

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<v Speaker 1>know is one of the worst things you can do

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<v Speaker 1>to yourself. And you did this on purpose, just to

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<v Speaker 1>prep I did. I'm a method podcaster, Josh, and I

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<v Speaker 1>thought it was the role required it. I salute the

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<v Speaker 1>dedication to your cremer ship. Actually, that's funny that that

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<v Speaker 1>you should do that. Well, it's not that funny if

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<v Speaker 1>you're preparing for it, because that means you read this article.

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<v Speaker 1>Why does orange juice taste bad if you brush your teeth?

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<v Speaker 1>So since you read it, I guess we can have

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<v Speaker 1>a pretty pretty intelligent conversation about it. Right, Well, we'll try.

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<v Speaker 1>Let's see what you got on flavor. Uh, flavor, I've

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<v Speaker 1>got a little bit on flavor. Uh. Flavor is divided

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<v Speaker 1>into five different categories, which most four of what you've

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<v Speaker 1>probably heard of. Uh, you got sweet, you have salty,

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<v Speaker 1>you have better, you have sour, and then you have

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<v Speaker 1>mommy mommy meaty tastes. Yeah, meaty tastes. I don't know

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<v Speaker 1>why they didn't just call it meaty. Actually, I don't

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<v Speaker 1>know either. I think O mommy is just as nice

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<v Speaker 1>because everyone wants to know what the heck O ou

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<v Speaker 1>mommy is. Anyways, you get to say them both. If

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<v Speaker 1>you just said meaty, no, they'd say what's meeting and

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<v Speaker 1>you'd say you mommy icebreaker? Yeah, exactly, a Japanese icebreaker. Yeah.

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<v Speaker 1>Uh so anyway, sorry you got sidetracked. Um, flavor is

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<v Speaker 1>all these different five things, and they react with each

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<v Speaker 1>other to create different different flavors with flavor combinations, and

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<v Speaker 1>you get flavor and temperature and consistency and smell and

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<v Speaker 1>texture together and you have, uh what we know about taste. Well,

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<v Speaker 1>it's kind of like all of the different toppings available

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<v Speaker 1>from Delicious Pizza. Hut brand Pizza working together to create

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<v Speaker 1>over one million combinations of delicious pizza. That's astounding. It

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<v Speaker 1>is astounding and delicious actually, so we we kind of

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<v Speaker 1>understand flavor a little bit. What we understand less though,

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<v Speaker 1>is exactly how this works. Um. When I was researching

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<v Speaker 1>taste for this article, I ran across an article written

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<v Speaker 1>by one of our esteem colleagues, Sarah Dowdy, and she

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<v Speaker 1>wrote on how smell works. And of course these two

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<v Speaker 1>are are you know, they're work in conjunction, and actually

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<v Speaker 1>we don't really know how either one works, but they're

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<v Speaker 1>they're prevailing theories that explain both, and they're pretty similar.

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<v Speaker 1>Actually has to do with our taste receptors, and they're

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<v Speaker 1>supposedly shaped a certain way and they accept only certain

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<v Speaker 1>shaped molecules, So like your sweet receptor is shaped so

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<v Speaker 1>that it would only accept molecules that possess this maybe

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<v Speaker 1>a sweet uh property to them? Right? What's the shape like?

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<v Speaker 1>It's it's shaped like an egg. You don't want to

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<v Speaker 1>know what do mommy shape like? It's terrible down there. Um,

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<v Speaker 1>But that's that's pretty much what we're thinking. How how

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<v Speaker 1>taste works? Um, And we have a little better handle

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<v Speaker 1>on exactly what's going on with that horrible collision of

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<v Speaker 1>orange juice and toothpaste. Do you you know what it was?

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<v Speaker 1>I mean you read the article, right, Yeah I did. Um.

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<v Speaker 1>One leading theory is that it's it's this chemical compound.

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<v Speaker 1>Is it a chemical compound? I believe it is. I

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<v Speaker 1>mean it's got three names, right, Sodium laurel sulfate, which

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<v Speaker 1>is a surfactant, which is a fancy name for kind

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<v Speaker 1>of a sudd saying agent. So you know, you brush

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<v Speaker 1>your teeth and it gets you foam at the mouth

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<v Speaker 1>like a you know, rabbit dog. Rabbit dog. Everyone likes

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<v Speaker 1>this rabbit dog. It's never a rabbit cat. Yeah. You

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<v Speaker 1>don't want to run across the Atticus finch when you

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<v Speaker 1>have a mouthful of s l last you don't. So anyway,

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<v Speaker 1>the the the SLS doesn't really do anything except make

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<v Speaker 1>you think that your teeth are getting cleaner and it

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<v Speaker 1>helps sell toothpaste. Yeah, well it's doing a heck of

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<v Speaker 1>a job. Uh. And from our understanding of s l last,

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<v Speaker 1>I mean, we we have a pretty good idea of

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<v Speaker 1>what's going on on the tongue. Um, it's actually like

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<v Speaker 1>Conan the Destroyer as far as phosphel lipids are concerned,

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<v Speaker 1>These things are basically like little little coverings on your

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<v Speaker 1>bitter receptors, kind of tones down bitter taste um, and

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<v Speaker 1>it actually goes in and just destroys these things. But

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<v Speaker 1>at the same time, it also dampens your sweet receptors.

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<v Speaker 1>So when you have Saudio laurel sulfate on the tongue,

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<v Speaker 1>your sweetness is down, your bitterness is up, and orange

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<v Speaker 1>juice is among the worst things on the planet at

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<v Speaker 1>that moment. It's like a perfect storm colliding in your

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<v Speaker 1>mouth exactly and your left you know, with your knees

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<v Speaker 1>pulled up to your chest, rocking in the corner, just

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<v Speaker 1>waiting for this to subside. And how long does that take? Well,

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<v Speaker 1>josh Lyn did a study, and I'm not sure why,

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<v Speaker 1>but some doctor felt the need to do a study

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<v Speaker 1>and he determined that it takes about an hour. It's fantastic.

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<v Speaker 1>Case closed. Actually, hopefully the doctor had plenty of volunteers

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<v Speaker 1>to try this out and your to do it himself. Well,

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<v Speaker 1>if you want to know more about taste and what

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<v Speaker 1>we think is going on down there, especially in regards

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<v Speaker 1>to orange juice and toothpaste, read why does orange juice

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<v Speaker 1>taste bad after you brush your teeth. On how stuff

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<v Speaker 1>works dot com for more on this and thousands of

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<v Speaker 1>other topics. Because it how stuff works dot Com m

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