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  • I'm holding in my hands

  • one of the most magnificent

  • powerful

  • marvelous chemicals in all of the universe

  • and wondering if you would be okay with me if I had some

  • Mmmm...

  • It tastes so good

  • Intro music

  • This, my friends, is your run-of-the-mill table sugar

  • It's made out of some sugar beets...

  • Or...

  • from a...

  • sugar cane...

  • There's no way to tell which

  • But henceforth we're going to be...

  • uhh...

  • calling it by it's proper name

  • which is sucrose.

  • There's a bunch of different kinds of sugars

  • but they're all sweet tasting, edible, carbohydrates

  • So, carbohydrates...

  • probably the tastiest word in the English language

  • and aside from filling up your snack hole

  • and making your kids get all spazzy

  • sugar

  • is one of the most important chemicals on the planet

  • They're pretty much the primary source of energy for every thing on Earth

  • Not this stuff exactly, this stuff is more of the

  • Ahh...

  • primary source of all

  • cavities on Earth

  • At the cellular level, pretty much every living thing on Earth, when it needs an energy fix

  • whether it's a plant, an animal or a bacteria

  • the first they turn to

  • is sugar.

  • Now where does sugar come from?

  • Our earliest word is the energy used to create sugar come from, that of course is our friend the sun.

  • These lovely sweet compounds are found in every single plant though in vastly varying quantities of course

  • because it is the primary product of photosynthesis

  • Now when we talk at all about photosynthesis on the biology crash course channel

  • and when we do that episode - when we post it online you will see the link down in the description

  • if you want to learn more about photosynthesis

  • but for now let's just say that the importance of plants turning carbon dioxide and water and sunlight into sugar

  • cannot be overstated

  • Basically,

  • plants use energy from the sun to split the molecules of water

  • and the hydrogen from that water is combined with the carbon dioxide

  • to create glucose

  • So in effect, this whole process captures the energy of the sun

  • and stores it as chemical energy in sugar

  • I'm eating the sun

  • I'm eating the sun

  • right now

  • It's under my tongue

  • Problem

  • That was a lot of sugar

  • Now I'm worried I gonna have a stomach ache

  • In addition to glucose and other common plant sugars, fructose, which has the same chemical formula

  • it's just...

  • rearranged a little bit...

  • And even though they're very similar and contain the same amount of energy

  • fructose actually tastes significantly sweeter

  • which is why we like to put high fructose corn syrup into beverages

  • That's why we get a wide range of tastiness in plants from super sweet potatoes to "not-sweet-at-all" potatoes

  • which is why what we generally call starch - which is a complex carbohydrate

  • is actually a bunch of sugar molecules all linked together

  • All the way to the sugar in sugarcane is our old friend sucrose

  • which was actually just a molecule of glucose and a molecule of fructose linked together

  • Point is

  • that all these sugars are important

  • The reason why we think they're so delicious

  • is because we need energy to survive

  • and sugar is a really great place to get energy from

  • And if it seems to you like I've been eating a lot of sugar in this video

  • Keep in mind that I've maybe had about two...

  • two, three teaspoons so far?

  • The average American has about twenty-two per day

  • so I've got a long way to go

  • Twenty-two teaspoons a day, people

  • That cannot be healthy

  • I did a little bit of research

  • and I discovered last night that just from drinking soda

  • the average American drinks about fifty pounds of sugar a year

  • We Americans generally have a heck of a lot more sugar than we need to have

  • We should probably having more like six to nine teaspoons a day

  • so you might want to rethink that all Captain Crunch diet you're currently on

  • I'm not really designed for a world

  • where sugar is infinitely available

  • It's certainly pretty hard to come by something really sweet in nature

  • and even if you find something - like a bunch of apples

  • it's hard to eat a lot of apples without making yourself pretty sick

  • Nowadays we've gotten around that by producing this wonderful white powder

  • as well as the high fructose corn syrup that they put in absolutely everything these days

  • So if you want my health advice...

  • try and maybe eat the way that your caveman ancestors did

  • fruits and vegetables

  • maybe some complex carbohydrates here and there

  • And I would suggest overall to not consume sugar

  • in this manner

  • Thank you for watching this episode of SciShow

  • If you wanna learn more about sugar, check the links in the description

  • You can also ask us questions, which we'll be happy to answer

  • and suggest other topics for SciSchow in the YouTube comments.

  • Hook up with us on Facebook and Twitter as well.

  • Goodbye

  • End credits music

I'm holding in my hands

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私たちが砂糖を愛する理由 (Why We Love Sugar)

  • 75 3
    robert に公開 2021 年 01 月 14 日
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