{"id":2465,"date":"2022-01-14T10:15:32","date_gmt":"2022-01-14T09:15:32","guid":{"rendered":"http:\/\/www.bububee.cz\/?p=2465"},"modified":"2022-01-14T10:15:33","modified_gmt":"2022-01-14T09:15:33","slug":"poctivy-nebo-pancovany-cesti-vedci-maji-novy-zpusob-jak-odhalit-falesny-med","status":"publish","type":"post","link":"https:\/\/www.bububee.cz\/index.php\/2022\/01\/14\/poctivy-nebo-pancovany-cesti-vedci-maji-novy-zpusob-jak-odhalit-falesny-med\/","title":{"rendered":"Poctiv\u00fd, nebo pan\u010dovan\u00fd? \u010ce\u0161t\u00ed v\u011bdci maj\u00ed nov\u00fd zp\u016fsob, jak odhalit fale\u0161n\u00fd med"},"content":{"rendered":"\n

Praotec \u010cech si na\u0161i vlast vybral nejenom kv\u016fli ml\u00e9ku, ale i strd\u00ed. Tedy medu. Dnes by v\u0161ak nad n\u011bkter\u00fdmi v\u00fdrobky s n\u00e1zvem ‚med‘ sp\u00ed\u0161e zaplakal. Med toti\u017e nad\u00e1le z\u016fst\u00e1v\u00e1 jednou z nej\u010dast\u011bji fal\u0161ovan\u00fdch potravin na \u010desk\u00e9m trhu.<\/strong><\/p>\n\n\n\n

‚Jde o velice n\u00e1kladnou komoditu a i fal\u0161ov\u00e1n\u00ed v \u0159\u00e1du jednotek procent m\u016f\u017ee p\u0159in\u00e9st nepoctiv\u00fdm provozovatel\u016fm citeln\u00fd zisk,‘ \u0159\u00edk\u00e1 mluv\u010d\u00ed St\u00e1tn\u00ed zem\u011bd\u011blsk\u00e9 a potravin\u00e1\u0159sk\u00e9 inspekce Pavel Kop\u0159iva. V lo\u0148sk\u00e9m roce inspekto\u0159i odebrali a\u017e do za\u010d\u00e1tku listopadu 47 vzork\u016f \u0161ar\u017e\u00ed medu, z nich nevyhov\u011blo dev\u011bt.<\/p>\n\n\n\n

K nej\u010dast\u011bji zji\u0161t\u011bn\u00fdm nedostatk\u016fm n\u00e1le\u017e\u00ed nevyhovuj\u00edc\u00ed hodnoty HMF, tedy ‚\u010derstvost‘ medu a aktivita enzymu diast\u00e1za, kter\u00fd indikuje sn\u00ed\u017eenou jakost medu \u0159ed\u011bn\u00edm nebo neodborn\u00fdm zach\u00e1zen\u00edm. Nej\u010dast\u011bj\u0161\u00edmi podvody je p\u0159im\u00edch\u00e1v\u00e1n\u00ed sirup\u016f z cukrov\u00e9 t\u0159tiny, kuku\u0159ice \u010di r\u00fd\u017ee.<\/p>\n\n\n\n

Odhalen\u00ed takov\u00e9ho fale\u0161n\u00e9ho medu je velmi nesnadn\u00e9. Vedci z V\u00fdzkumn\u00e9ho \u00fastavu rostlinn\u00e9 v\u00fdroby a Univerzity Karlovy v\u0161ak p\u0159i\u0161li s novou metodou, kter\u00e1 v laborato\u0159i pan\u010dovan\u00fd med odhal\u00ed za p\u00e1r minut. Postup navr\u017een\u00fd skupinou v\u011bdc\u016f v \u010dele s Tom\u00e1\u0161em Erbanem je postaven na r\u016fznorodosti typ\u016f protein\u016f v medu a rozpozn\u00e1n\u00ed t\u011bch, kter\u00e9 do n\u011bj byly p\u0159id\u00e1ny um\u011ble. ‚Tyto l\u00e1tky se sice b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed v potravin\u00e1\u0159stv\u00ed, v p\u0159\u00edrod\u011b v\u0161ak pro v\u010dely voln\u011b dostupn\u00e9 nejsou. V\u010dely do medu dod\u00e1vaj\u00ed sv\u00e9 jedine\u010dn\u00e9 proteiny,‘ uvedl Erban.<\/p>\n\n\n\n

Nejv\u00fdznamn\u011bj\u0161\u00ed v\u010del\u00ed proteiny se naz\u00fdvaj\u00ed amyl\u00e1zy. Pokud je med fal\u0161ovan\u00fd nebo se s n\u00edm ne\u0161etrn\u011b zach\u00e1z\u00ed, b\u00fdv\u00e1 neblah\u00fdm zp\u016fsobem ovlivn\u011bna i amyl\u00e1zov\u00e1 aktivita. ‚Med s nedostate\u010dnou amyl\u00e1zovou aktivitou pak nesm\u00ed b\u00fdt prod\u00e1v\u00e1n. Z tohoto d\u016fvodu nahrazuj\u00ed podvodn\u00edci nedostate\u010dnou amyl\u00e1zovou aktivitu p\u0159id\u00e1n\u00edm ciz\u00edch amyl\u00e1z, kter\u00e9 nejsou medu vlastn\u00ed,‘ dodal Erban.<\/p>\n\n\n\n

\u010ce\u0161t\u00ed v\u011bdci proto popsali zp\u016fsob, jak ciz\u00ed proteiny v medu objevit a t\u00edm rychleji rozli\u0161it poctiv\u00fd med od pan\u010dovan\u00e9ho. Doporu\u010den\u00fd postup tak\u00e9 nab\u00eddli st\u00e1tn\u00edm laborato\u0159\u00edm, kter\u00e9 kontroluj\u00ed kvalitu potravin.<\/p>\n\n\n\n

Med se pan\u010duje a pad\u011bl\u00e1 i p\u0159es to, \u017ee jeho cena v posledn\u00edch m\u011bs\u00edc\u00edch kles\u00e1. Zat\u00edmco na za\u010d\u00e1tku roku 2020 zaplatil spot\u0159ebitel za kilo t\u00e9to komodity 201 korun za kilogram, tak v listopadu n\u00e1sleduj\u00edc\u00edho roku zaplatil 160 korun. ‚V supermarketu lze koupit i kilo medu za 120 korun, ale to m\u00e1 s medem pram\u00e1lo spole\u010dn\u00e9ho. Sama bych si takov\u00fd med nikdy nekoupila,‘ \u0159\u00edk\u00e1 v\u010dela\u0159ka Pavla Kudl\u00e1\u010dkov\u00e1.<\/p>\n\n\n\n

Dle jej\u00edho m\u00edn\u011bn\u00ed je u t\u011bchto levn\u00fdch ‚med\u016f‘ evidentn\u00ed, \u017ee p\u016fjde o med \u0159ed\u011bn\u00fd bu\u010f cukernat\u00fdm roztokem anebo medy, kter\u00e9 poch\u00e1zej\u00ed z oblast\u00ed mimo EU. ‚Ty m\u00edvaj\u00ed jinou chu\u0165 i konzistenci a p\u0159edev\u0161\u00edm kvalitu,‘ dod\u00e1v\u00e1 \u017eena, kter\u00e1 m\u00e1 sv\u00fdch 12 v\u010delstev ve Vysok\u00e9m Chvojn\u011b na Pardubicku.<\/p>\n\n\n\n

Z\u00e1rove\u0148 d\u00e1v\u00e1 i radu spot\u0159ebitel\u016fm. ‚Hodn\u011b lid\u00ed si mysl\u00ed, \u017ee \u010d\u00edm je med tekut\u011bj\u0161\u00ed, t\u00edm je kvalitn\u011bj\u0161\u00ed a naopak se vyh\u00fdbaj\u00ed medu, kter\u00fd takzvan\u011b cukernat\u00ed,‘ popisuje Kudl\u00e1\u010dkov\u00e1. Podle v\u010dela\u0159ky v\u0161ak pr\u00e1v\u011b cukernatost, tedy fakt, \u017ee med \u010dasem tuhne, sv\u011bd\u010d\u00ed o jeho kvalit\u011b, spr\u00e1vn\u00e9m pom\u011bru vody p\u0159i vyt\u00e1\u010den\u00ed a tak\u00e9 o obsahu prosp\u011b\u0161n\u00fdch slo\u017eek. Nap\u0159\u00edklad viditeln\u00e9 zbytky pylu a propolisu med p\u0159irozen\u011b konzervuj\u00ed. ‚Tekut\u00fd med ze supermarketu je t\u00e9m\u011b\u0159 v\u017edy na\u0159ed\u011bn\u00fd \u010di tepeln\u011b zpracovan\u00fd. To ale zcela znehodnocuje jeho prosp\u011b\u0161n\u00e9 l\u00e1tky,‘ dod\u00e1v\u00e1 Kudl\u00e1\u010dkov\u00e1.<\/p>\n\n\n\n

Pan\u010dov\u00e1n\u00edm medu se intenzivn\u011b zab\u00fdv\u00e1 i\u00a0Evropsk\u00e1 komise. Ta v\u00a01. polovin\u011b roku 2022\u00a0po\u010d\u00edt\u00e1 s\u00a0p\u0159edlo\u017een\u00edm n\u00e1vrhu pozm\u011bn\u011bn\u00e9ho zna\u010den\u00ed v\u010del\u00edho medu, ze kter\u00e9ho bude spot\u0159ebitel\u016fm patrn\u011bj\u0161\u00ed, odkud poch\u00e1z\u00ed. Nejv\u011bt\u0161\u00edm sou\u010dasn\u00fdm v\u00fdrobcem medu na sv\u011bt\u011b je \u010c\u00edna. V\u00a0\u010cesku se ro\u010dn\u00ed spot\u0159eba medu pohybuje na \u00farovni 0,9\u00a0kilogramu na\u00a0osobu.<\/p>\n\n\n\n

Ing. Ji\u0159\u00ed Hubka (zdroj. Den\u00edk.cz)<\/p>\n","protected":false},"excerpt":{"rendered":"

Praotec \u010cech si na\u0161i vlast vybral nejenom kv\u016fli ml\u00e9ku, ale i strd\u00ed. Tedy medu. Dnes by v\u0161ak nad n\u011bkter\u00fdmi v\u00fdrobky s n\u00e1zvem ‚med‘ sp\u00ed\u0161e zaplakal. Med toti\u017e nad\u00e1le z\u016fst\u00e1v\u00e1 jednou z nej\u010dast\u011bji fal\u0161ovan\u00fdch potravin na \u010desk\u00e9m trhu. ‚Jde o velice n\u00e1kladnou komoditu a i fal\u0161ov\u00e1n\u00ed v \u0159\u00e1du jednotek procent m\u016f\u017ee p\u0159in\u00e9st nepoctiv\u00fdm provozovatel\u016fm citeln\u00fd zisk,‘ \u0159\u00edk\u00e1 mluv\u010d\u00ed St\u00e1tn\u00ed […]<\/p>\n","protected":false},"author":81,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/posts\/2465"}],"collection":[{"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/users\/81"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/comments?post=2465"}],"version-history":[{"count":2,"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/posts\/2465\/revisions"}],"predecessor-version":[{"id":2467,"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/posts\/2465\/revisions\/2467"}],"wp:attachment":[{"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/media?parent=2465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/categories?post=2465"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bububee.cz\/index.php\/wp-json\/wp\/v2\/tags?post=2465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}