Monday, May 12, 2008

apel mengandung lebih banyak caffeine?

pernah denger kata itu?? nay barusan kan bilang, hehehe, ga sih, dari browsing, funfacts. com that was what they say..but is it true? kalo gitu mam apple aja kali ya, biar bisa diet sekaligus ga ngantuk dan ga sakit mag, heheh

ternyata ada beberapa sumber, yang bilang beda2..
dari sumber yang bilang apel ga lebih banyak mengandung kafein
A medium-sized apple averages 20 grams of carbohydrates -- not nearly as much as in a sugary snack, but the apple would certainly be a more nutritious choice than, say, a candy bar. And this year, you could get even a bigger boost from locally grown apples: The Midwest's dry summer decreased apples' moisture content, which concentrates the sugars in each fruit, making them delightfully sweet. Who wouldn't feel refreshed munching on a crisp, sweet apple?

Still, that's not the same kind of boost people get from caffeine. They work in totally different ways.

Simply put, food boosts your energy by helping form ATP (adenosine triphosphate). Cells use ATP whenever they need energy, whether it's chemical energy to store for later use; mechanical energy used in muscle movement; electrical energy for nerve transmissions; or osmotic energy to balance sodium, potassium and other ions within the cell. When ATP is tapped for use, it breaks down. It's in that breakdown that energy is released, from the bonds that hold ATP together. ATP continually is broken down and re-formed in the body.

Coincidentally, adenosine (the "A" in ATP) also shows up in the explanation for how caffeine works. Again, simply put: When adenosine binds to receptors in the brain -- as cyclic adenosine monophosphate, or cAMP, it calms nerve cell activity and makes us drowsy. Caffeine happens to be structured very much like cAMP and can bind to those receptors. When it does, it blocks cAMP and keeps us from getting tired. Other factors also play a role, but already you can see that caffeine and carbs play very different roles in energy balances in the body.

No comments:

Monday, May 12, 2008

apel mengandung lebih banyak caffeine?

pernah denger kata itu?? nay barusan kan bilang, hehehe, ga sih, dari browsing, funfacts. com that was what they say..but is it true? kalo gitu mam apple aja kali ya, biar bisa diet sekaligus ga ngantuk dan ga sakit mag, heheh

ternyata ada beberapa sumber, yang bilang beda2..
dari sumber yang bilang apel ga lebih banyak mengandung kafein
A medium-sized apple averages 20 grams of carbohydrates -- not nearly as much as in a sugary snack, but the apple would certainly be a more nutritious choice than, say, a candy bar. And this year, you could get even a bigger boost from locally grown apples: The Midwest's dry summer decreased apples' moisture content, which concentrates the sugars in each fruit, making them delightfully sweet. Who wouldn't feel refreshed munching on a crisp, sweet apple?

Still, that's not the same kind of boost people get from caffeine. They work in totally different ways.

Simply put, food boosts your energy by helping form ATP (adenosine triphosphate). Cells use ATP whenever they need energy, whether it's chemical energy to store for later use; mechanical energy used in muscle movement; electrical energy for nerve transmissions; or osmotic energy to balance sodium, potassium and other ions within the cell. When ATP is tapped for use, it breaks down. It's in that breakdown that energy is released, from the bonds that hold ATP together. ATP continually is broken down and re-formed in the body.

Coincidentally, adenosine (the "A" in ATP) also shows up in the explanation for how caffeine works. Again, simply put: When adenosine binds to receptors in the brain -- as cyclic adenosine monophosphate, or cAMP, it calms nerve cell activity and makes us drowsy. Caffeine happens to be structured very much like cAMP and can bind to those receptors. When it does, it blocks cAMP and keeps us from getting tired. Other factors also play a role, but already you can see that caffeine and carbs play very different roles in energy balances in the body.

No comments: