[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.seros.cz\/kazdodenni-kava-nas-probouzi\/#Article","mainEntityOfPage":"https:\/\/www.seros.cz\/kazdodenni-kava-nas-probouzi\/","headline":"Ka\u017edodenn\u00ed k\u00e1va n\u00e1s probouz\u00ed","name":"Ka\u017edodenn\u00ed k\u00e1va n\u00e1s probouz\u00ed","description":"Kofein je nejsp\u00ed\u0161e nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed stimulant na sv\u011bt\u011b. Jeho dlouhodob\u00e9 u\u017e\u00edv\u00e1n\u00ed ve v\u011bt\u0161\u00edm mno\u017estv\u00ed se potom st\u00e1v\u00e1 drogou, kter\u00e1 m\u00e1 psychoaktivn\u00ed stimula\u010dn\u00ed \u00fa\u010dinky. Tato zn\u00e1m\u00e1, krystalick\u00e1 l\u00e1tka n\u00e1le\u017e\u00ed do skupiny purinov\u00fdch, methylov\u00fdch deriv\u00e1t\u016f xanthinu. Kofein objevil n\u011bmeck\u00fd chemik Ferdinand Runge v letech 1819. Pojmenoval tuto nov\u011b objevenou l\u00e1tku kofein, jako chemicky aktivn\u00ed slo\u017eku k\u00e1vy. \u00b7 Kofein… ","datePublished":"2025-06-24","dateModified":"2025-06-24","author":{"@type":"Person","@id":"https:\/\/www.seros.cz\/author\/#Person","name":"","url":"https:\/\/www.seros.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/15c4177f6d86975c976af12ba80b10af7add2f97f8786f8cf1596253472c0ea7?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/15c4177f6d86975c976af12ba80b10af7add2f97f8786f8cf1596253472c0ea7?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"seros.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.seros.cz\/wp-content\/uploads\/img_a299740_w2276_t1509647953.jpg","url":"https:\/\/www.seros.cz\/wp-content\/uploads\/img_a299740_w2276_t1509647953.jpg","height":0,"width":0},"url":"https:\/\/www.seros.cz\/kazdodenni-kava-nas-probouzi\/","wordCount":378,"articleBody":"Kofein je nejsp\u00ed\u0161e nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed stimulant na sv\u011bt\u011b. Jeho dlouhodob\u00e9 u\u017e\u00edv\u00e1n\u00ed ve v\u011bt\u0161\u00edm mno\u017estv\u00ed se potom st\u00e1v\u00e1 drogou, kter\u00e1 m\u00e1 psychoaktivn\u00ed stimula\u010dn\u00ed \u00fa\u010dinky. Tato zn\u00e1m\u00e1, krystalick\u00e1 l\u00e1tka n\u00e1le\u017e\u00ed do skupiny purinov\u00fdch, methylov\u00fdch deriv\u00e1t\u016f xanthinu. Kofein objevil n\u011bmeck\u00fd chemik Ferdinand Runge v letech 1819. Pojmenoval tuto nov\u011b objevenou l\u00e1tku kofein, jako chemicky aktivn\u00ed slo\u017eku k\u00e1vy. \u00b7 Kofein se tak\u00e9 nach\u00e1z\u00ed v chemick\u00e9 slou\u010denin\u011b a nerozpustn\u00e9m komplexu guaraninu, kter\u00fd je obsa\u017een v rostlin\u011b guarana. \u00b7 Nalezneme jej tak\u00e9 v mateinu, kter\u00fd je obsa\u017een v mat\u00e9. \u00b7 A tak\u00e9 v theinu, kter\u00fd obsahuje \u010daj. \u00b7 Kofein se v r\u016fzn\u00e9m mno\u017estv\u00ed nach\u00e1z\u00ed tak\u00e9 ve fazol\u00edch. \u00b7 Jeho v\u00fdskyt je potvrzen v listech a plodech n\u011bkter\u00fdch rostlin, kde slou\u017e\u00ed jako p\u0159irozen\u00fd pesticid, kter\u00fd paralyzuje a zab\u00edj\u00ed hmyz, je\u017e se \u017eiv\u00ed \u010d\u00e1stmi rostlin. Va\u0161e rann\u00ed k\u00e1va V lidsk\u00e9m organismu kofein p\u016fsob\u00ed jako stimul\u00e1tor centr\u00e1ln\u00ed nervov\u00e9 soustavy. Jeho potla\u010den\u00edm lze dos\u00e1hnout do\u010dasn\u00e9 \u00fanavy a bd\u011blosti. Jedn\u00e1 se pravd\u011bpodobn\u011b o nejpopul\u00e1rn\u011bj\u0161\u00ed psychoaktivn\u00ed l\u00e1tku na sv\u011bt\u011b. \u00b7 Nav\u00edc m\u00e1 kofein diuretick\u00e9 \u00fa\u010dinky, to znamen\u00e1, \u017ee je mo\u010dopudn\u00fdm. To ov\u0161em plat\u00ed pouze u lid\u00ed, kte\u0159\u00ed nemaj\u00ed vyvinutou toleranci na kofein jeho \u010dast\u00fdm u\u017e\u00edv\u00e1n\u00edm. Naproti tomu u u\u017eivatel\u016f, kte\u0159\u00ed pravideln\u011b konzumuj\u00ed kofein, se vyvine tolerance k tomuto \u00fa\u010dinku. Zaj\u00edmavosti o kofeinu \u00b7 \u010cist\u00fd kofein m\u00e1 formu b\u00edl\u00e9ho, hebk\u00e9ho pr\u00e1\u0161ku, anebo leskl\u00fdch jehli\u010dek s ho\u0159kou chut\u00ed. \u00b7 Deriv\u00e1t kofein se nach\u00e1z\u00ed v listech, semenech a plodech nejm\u00e9n\u011b \u0161edes\u00e1ti t\u0159\u00ed a v\u00edce rostlin. Mezi nejzn\u00e1m\u011bj\u0161\u00ed pat\u0159\u00ed k\u00e1vov\u00e1 zrna, kakaov\u00e9 boby, cola o\u0159echy, \u010dajov\u00e9 l\u00edstky, l\u00edstky mat\u00e9 a guarana. \u00b7 Kofein se p\u0159id\u00e1v\u00e1 do nealkoholick\u00fdch n\u00e1poj\u016f jako je Coca-Cola, Kofola a dal\u0161\u00ed. \u00b7 Podle v\u00fdskytu nese kofein ozna\u010den\u00ed tak\u00e9 jako tein, matein \u010di guaranin. \u00b7 Nepatrn\u00e1 koncentrace kofeinu je pro pl\u017ee smrteln\u00fdm nervov\u00fdm jedem. Kofein je tedy mitotick\u00fd jed. \u00b7 Nejvy\u0161\u0161\u00ed obsah kofeinu je u rostlin, kter\u00e9 jsou olist\u011bn\u00e9, ale chyb\u00ed jim mechanick\u00e1 ochrana.                                                                                                                                                                                                                                                                                                                                                                                        4.7\/5 - (3 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Ka\u017edodenn\u00ed k\u00e1va n\u00e1s probouz\u00ed","item":"https:\/\/www.seros.cz\/kazdodenni-kava-nas-probouzi\/#breadcrumbitem"}]}]