this post was submitted on 15 Feb 2024
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No Stupid Questions

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I have plant trays I use in the spring and they get lime deposits from my water. I was looking at cleaning vinegar at lowes last night and it was $27+ a gallon. Regular vinegar is about $4 a gallon. The cleaning vinegar is only around 25%.

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[โ€“] 200ok@lemmy.world 16 points 4 months ago (1 children)

TIL:

I feel stupid. I just realised why candy rots teeth.

  1. I use citric acid to descale the gunk off my steam humidifier
  2. That gunk is calcium buildup
  3. Candy has citric acid
  4. Teeth have calcium

๐Ÿคฏ

[โ€“] stoneparchment@possumpat.io 38 points 4 months ago* (last edited 4 months ago) (4 children)

Oooh it's even cooler than that!! You're spot on, acid is the problem. And acid from food, candy, coffee, etc. is harmful for enamel for sure.

But sugary stuff that isn't acidic also rots teeth. Why? Because the bacteria in your mouth do what's called lactic acid fermentation. Basically, when they take a sugar molecule and want to make "usable" energy out of it (in the form of something called ATP, or adenosine triphosphate), they end up creating lactic acid as a byproduct. In essence, the stuff living in your mouth makes acid out of sugar.

We also need to break sugar down into ATP, but we do something called cellular respiration instead. It uses oxygen and creates CO2 as a byproduct! That's why we need oxygen to breathe, and why we breathe out carbon dioxide. But, when you work your muscles hard (lifting weights, sprinting), you might use the ATP in your muscles faster than your body can make it with cellular respiration. In that case, your cells will also do lactic acid fermentation! That's what we're feeling when we "feel the burn" (well, that and micro-tears in the muscle, in some cases).

Source: I'm a biologist! And I love sharing weird facts like this! Thank you for the excuse to write this out :-)

[โ€“] NoMoreLurkingToo@startrek.website 3 points 4 months ago (1 children)

Thank you for the cool information!

This interaction made me feel like I was reading a comment in Reddit 10 years ago, I've missed that, thanks for that as well!

[โ€“] 200ok@lemmy.world 3 points 4 months ago
[โ€“] eightpix@lemmy.world 2 points 4 months ago

Cellular respiration, the Krebs cycle, oxidative phosphorylation, citric acid cycle, glycolysis... I miss having these processes in my head. I was such a biology nerd once.

[โ€“] 200ok@lemmy.world 2 points 4 months ago

Woah! Thank you so much for sharing!!

[โ€“] joel_feila@lemmy.world 1 points 4 months ago

Hey did you ever do that experiment where you spit in a tube and see how long it takes to turn it acodic enough to damage teeth?