{"id":1344,"date":"2016-04-21T09:00:44","date_gmt":"2016-04-21T07:00:44","guid":{"rendered":"http:\/\/potravinyx.cz\/?p=1344"},"modified":"2016-04-20T19:47:07","modified_gmt":"2016-04-20T17:47:07","slug":"zinek","status":"publish","type":"post","link":"https:\/\/potravinyx.cz\/?p=1344","title":{"rendered":"Zinek"},"content":{"rendered":"

Stanovisko k p\u0159id\u00e1v\u00e1n\u00ed zinku do dopl\u0148k\u016f stravy<\/h2>\n
\n
\n

\u00a0<\/strong><\/p>\n

1. \u00davod<\/strong><\/p>\n

Zinek je z\u00a0hlediska v\u00fd\u017eivy v\u00fdznamn\u00fd prvek, kter\u00fd pln\u00ed mnoho biochemick\u00fdch a fyziologick\u00fdch funkc\u00ed v\u00a0t\u011ble. Je sou\u010d\u00e1st\u00ed v\u00edce ne\u017e 300 enzym\u016f, pod\u00edl\u00ed se na synt\u00e9ze protein\u016f nukleov\u00fdch kyselin, bun\u011b\u010dn\u00e9m d\u011blen\u00ed. Je pot\u0159ebn\u00fd pro t\u011blesn\u00fd r\u016fst a v\u00fdvoj, imunitn\u00ed syst\u00e9m, neurologick\u00e9 funkce, reprodukci a m\u00e1 z\u00e1sadn\u00ed vliv na metabolismus makro\u017eivin. Zinek se nach\u00e1z\u00ed v\u00a0mnoha potravin\u00e1ch (zejm\u00e9na maso hov\u011bz\u00ed, vep\u0159ov\u00e9, ml\u00e9ko, ml\u00e9\u010dn\u00e9 v\u00fdrobky, celozrnn\u00e9 obiloviny, o\u0159echy, sem\u00ednka)(1)\u00a0 Zinek je rovn\u011b\u017e sou\u010d\u00e1st\u00ed mnoha dopl\u0148k\u016f stravy.<\/p>\n


\n2. D\u016fle\u017eit\u00e9 hodnoty<\/strong><\/p>\n

Denn\u00ed referen\u010dn\u00ed hodnota p\u0159\u00edjmu zinku pro dosp\u011blou populaci je 10 mg<\/strong>.(2)<\/p>\n

(hodnota stanoven\u00e1 pro \u00fa\u010dely ozna\u010dov\u00e1n\u00ed potravin)<\/p>\n

Za v\u00fdznamn\u00e9 mno\u017estv\u00ed, kter\u00e9 lze uv\u00e1d\u011bt v\u00a0ozna\u010den\u00ed na obale potravin a ke kter\u00e9mu lze vztahovat schv\u00e1len\u00e1 zdravotn\u00ed tvrzen\u00ed je 15% denn\u00ed referen\u010dn\u00ed hodnoty p\u0159\u00edjmu, tj.<\/p>\n

1,5 mg v\u00a0denn\u00ed doporu\u010den\u00e9 d\u00e1vce<\/strong> (3)<\/p>\n

Nejvy\u0161\u0161\u00ed p\u0159\u00edpustn\u00e9 mno\u017estv\u00ed zinku v dopl\u0148c\u00edch stravy pro dosp\u011blou populaci \u00a0je<\/p>\n

15 mg v\u00a0denn\u00ed doporu\u010den\u00e9 d\u00e1vce <\/strong>(5)<\/p>\n

 <\/p>\n

3. Dopl\u0148uj\u00edc\u00ed informace<\/strong><\/p>\n

Jako zdroj zinku pro dopl\u0148ky stravy lze pou\u017e\u00edvat pouze formy uveden\u00e9 v\u00a0na\u0159\u00edzen\u00ed Komise (ES) \u010d.1170\/2009<\/p>\n

Evropsk\u00fd \u00fa\u0159ad pro bezpe\u010dnost potravin (EFSA) stanovil horn\u00ed tolerovatelnou hodnotu p\u0159\u00edjmu zinku ze v\u0161ech zdroj\u016f na 25mg denn\u011b.(4) Zinek pat\u0159\u00ed do skupiny \u017eivin s\u00a0vysok\u00fdm rizikem p\u0159ekro\u010den\u00ed tolerovateln\u00e9 hodnoty p\u0159\u00edjmu.<\/p>\n

P\u0159i dlouhodob\u00e9m nadm\u011brn\u00e9m p\u0159\u00edjmu zinku doch\u00e1z\u00ed k\u00a0naru\u0161en\u00ed absorpce jin\u00fdch prvk\u016f zejm\u00e9na m\u011bdi a \u017eeleza, co\u017e vede k\u00a0jejich deficitu.<\/p>\n

Pou\u017eit\u00e1 literatura:<\/p>\n

1) SCHMIDOV\u00c1, S. Zinek ve v\u00fd\u017eiv\u011b \u010dlov\u011bka \u2013 biochemie, fyziologie, deficience. Brno: Masarykova univerzita, \u00a0\u00a0\u00a02008, 76 s.<\/em><\/p>\n

2) Na\u0159\u00edzen\u00ed EP a R (EU) \u010d.1169\/2011 o poskytov\u00e1n\u00ed informac\u00ed o potravin\u00e1ch spot\u0159ebitel\u016fm<\/em><\/p>\n

3) Na\u0159\u00edzen\u00ed EP a R (ES) \u010d.1924\/2006 o v\u00fd\u017eivov\u00fdch a zdravotn\u00edch tvrzen\u00edch p\u0159i ozna\u010dov\u00e1n\u00ed potravin<\/em><\/p>\n

4) EFSA Journal 2014;12(10):3844 [76 pp.].<\/em><\/p>\n

5) Food Supplements Europe ,<\/em>Risk management approaches to the setting of maximum levels of vitamins and minerals in food supplements for adults and for children aged 4\u201310 years, <\/em>July 2014<\/em><\/p>\n

Zapsala Ing. D.Winklerov\u00e1<\/em><\/p>\n<\/div>\n

p\u0159evzat\u00fd \u010dl\u00e1nek\u00a0www.szu.cz<\/p>\n","protected":false},"excerpt":{"rendered":"

Stanovisko k p\u0159id\u00e1v\u00e1n\u00ed zinku do dopl\u0148k\u016f stravy \u00a0 1. \u00davod Zinek je z\u00a0hlediska v\u00fd\u017eivy v\u00fdznamn\u00fd prvek, kter\u00fd pln\u00ed mnoho biochemick\u00fdch a fyziologick\u00fdch funkc\u00ed v\u00a0t\u011ble. Je sou\u010d\u00e1st\u00ed v\u00edce ne\u017e 300 enzym\u016f, pod\u00edl\u00ed se na synt\u00e9ze protein\u016f [v\u00edc]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":1346,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[148],"class_list":["post-1344","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vitaminy-a-mineraly","tag-zinek"],"views":2879,"_links":{"self":[{"href":"https:\/\/potravinyx.cz\/index.php?rest_route=\/wp\/v2\/posts\/1344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/potravinyx.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/potravinyx.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/potravinyx.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/potravinyx.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1344"}],"version-history":[{"count":0,"href":"https:\/\/potravinyx.cz\/index.php?rest_route=\/wp\/v2\/posts\/1344\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/potravinyx.cz\/index.php?rest_route=\/wp\/v2\/media\/1346"}],"wp:attachment":[{"href":"https:\/\/potravinyx.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/potravinyx.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/potravinyx.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}