Lus piav qhia luv luv:
CAS Nr .: 58-08-2
Cov mis mos molecular: C8H10N4O2
Molecular Luj: 194.19
Chemical structure:
| Cov ntaub ntawv yooj yim | |
| Khoom npe | Caffeine Anhydrous |
| CAS Nr. | 58-08-2 ib |
| Qhov tshwm sim | dawb crystalline hmoov |
| Qib | Qib zaub mov |
| Solubility | Soluble hauv chloroform, dej, ethanol, yooj yim soluble hauv dilute acids, me ntsis soluble hauv ether |
| Cia | Ntim ntim nrog cov hnab yas tsis muaj tshuaj lom lossis lub khob iav. Khaws rau hauv qhov chaw txias thiab qhuav. |
| Txee lub neej | 2 xyoo |
| Pob | 25kg / thawv |
Kev piav qhia
Caffeine yog lub hauv nruab nrab lub paj hlwb (CNS) irritant thiab belongs rau qeb ntawm alkaloids. Caffeine muaj ntau yam haujlwm, xws li ua kom lub cev muaj zog, ua kom lub hlwb rhiab heev, thiab ua kom muaj zog ntawm neural excitability.
Caffeine muaj nyob rau hauv ntau yam khoom noj, xws li tshuaj yej, kas fes, guarana, cocoa, thiab cola. Nws yog qhov siv ntau tshaj plaws, nrog ze li 90% ntawm cov neeg laus Asmeskas niaj hnub siv caffeine.
Caffeine tuaj yeem nqus tau sai los ntawm txoj hnyuv thiab ua rau nws cov txiaj ntsig siab tshaj plaws (mus txog nws qhov siab tshaj plaws) hauv 15 mus rau 60 feeb tom qab siv. Ib nrab-lub neej ntawm caffeine nyob rau hauv tib neeg lub cev yog 2.5 mus rau 4.5 teev.
Main Function
Caffeine tuaj yeem cuam tshuam adenosine receptors hauv lub hlwb, ua kom dopamine thiab cholinergic neurotransmission. Tsis tas li ntawd, caffeine tuaj yeem cuam tshuam rau cyclic adenosine monophosphate thiab prostaglandins.
Nws yuav tsum tau muab sau tseg tias caffeine muaj ib tug me ntsis diuretic nyhuv.
Raws li kev ua kis las ntxiv (cov khoom xyaw), caffeine feem ntau yog siv ua ntej kev cob qhia lossis kev sib tw. Nws tuaj yeem txhim kho lub zog ntawm lub cev, lub hlwb rhiab heev (kev xav), thiab kev tswj cov leeg nqaij ntawm cov neeg ncaws pob lossis cov neeg nyiam kev tawm dag zog, ua rau lawv cob qhia nrog kev siv zog ntau dua thiab ua tiav cov txiaj ntsig kev kawm zoo dua. Nws yog tsim nyog sau cia tias cov neeg sib txawv muaj qhov sib txawv ntawm cov tshuaj caffeine.
