{"id":3583,"date":"2023-09-01T11:19:21","date_gmt":"2023-09-01T09:19:21","guid":{"rendered":"https:\/\/www.oilstop.cz\/?p=3583"},"modified":"2023-08-08T11:28:18","modified_gmt":"2023-08-08T09:28:18","slug":"olejniny-pestovane-v-cr","status":"publish","type":"post","link":"https:\/\/www.oilstop.cz\/en\/olejniny-pestovane-v-cr\/","title":{"rendered":"Olejniny p\u011bstovan\u00e9 v\u00a0\u010cR"},"content":{"rendered":"

Zem\u011bd\u011blstv\u00ed hraje v \u010cesk\u00e9 republice d\u016fle\u017eitou roli. Rostlinn\u00e1 v\u00fdroba je u n\u00e1s zam\u011b\u0159ena zejm\u00e9na na produkci potravin, krmiv a surovin pro farmaceutick\u00fd a potravin\u00e1\u0159sk\u00fd pr\u016fmysl. Nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed je p\u011bstov\u00e1n\u00ed obilnin, olejniny jsou ale v t\u011bsn\u00e9m z\u00e1v\u011bsu. P\u0159edstav\u00edme si ty nejzn\u00e1m\u011bj\u0161\u00ed i olej, kter\u00fd z nich m\u016f\u017eeme z\u00edskat.<\/strong><\/p>\n\n\n\n

\u0158epka olejn\u00e1<\/h2>\n\n\n\n

Nejp\u011bstovan\u011bj\u0161\u00ed olejninou je u n\u00e1s \u0159epka olejn\u00e1, m\u016f\u017eeme se setkat s formou ozimou a jarn\u00ed. Na v\u011bt\u0161in\u011b plochy se p\u011bstuje pro n\u00e1s v\u00fdznamn\u011bj\u0161\u00ed \u0159epka olejn\u00e1 ozim\u00e1. V \u010desk\u00fdch podm\u00ednk\u00e1ch trv\u00e1 jej\u00ed vegeta\u010dn\u00ed doba obvykle okolo 330. dn\u016f a nen\u00ed p\u0159\u00edli\u0161 n\u00e1ro\u010dn\u00e1 na konkr\u00e9tn\u00ed oblast p\u011bstov\u00e1n\u00ed. Vyu\u017e\u00edv\u00e1 se k v\u00fdrob\u011b paliv a olej\u016f pro potravin\u00e1\u0159sk\u00e9 i technick\u00e9 vyu\u017eit\u00ed.<\/p>\n\n\n\n

Olej ze semene \u0159epky m\u00e1 n\u00edzk\u00fd obsah nasycen\u00fdch mastn\u00fdch kyselin. Oproti ostatn\u00edm olej\u016fm m\u00e1 pak je\u0161t\u011b jednu v\u00fdhodu \u2013 vy\u0161\u0161\u00ed obsah tokoferol\u016f (N\u00e1rodn\u00ed zdravotnick\u00fd informa\u010dn\u00ed port\u00e1l na sv\u00e9m webu nzip.cz<\/a> pojem vysv\u011btluje takto: \u201eTokoferoly p\u0159edstavuj\u00ed skupinu strukturn\u011b podobn\u00fdch l\u00e1tek, kter\u00e9 v lidsk\u00e9m t\u011ble pln\u00ed funkci vitaminu E.\u201c). Roz\u0161\u00ed\u0159en\u00e9 p\u0159esv\u011bd\u010den\u00ed, \u017ee jde obecn\u011b o nekvalitn\u00ed olej je tedy chybn\u00e9.<\/p>\n\n\n\n

M\u00e1k set\u00fd<\/h2>\n\n\n\n

Dal\u0161\u00ed u n\u00e1s pom\u011brn\u011b hojn\u011b zastoupenou plodinou je m\u00e1k. P\u0159esto, \u017ee druh\u016f m\u00e1ku je n\u011bkolik, setk\u00e1me se t\u00e9m\u011b\u0159 v\u00fdlu\u010dn\u011b s m\u00e1kem set\u00fdm. Jeho sem\u00ednka obsahuj\u00ed dieteticky cenn\u00fd (tedy odpov\u00eddaj\u00edc\u00ed z\u00e1sad\u00e1m spr\u00e1vn\u00e9 v\u00fd\u017eivy) olej, jeho\u017e vlastnosti se odv\u00edj\u00ed nejen od konkr\u00e9tn\u00ed odr\u016fdy, ale i od m\u00edsta jeho p\u011bstov\u00e1n\u00ed. Plat\u00ed, \u017ee \u010d\u00edm vy\u0161\u0161\u00ed zem\u011bpisn\u00e1 \u0161\u00ed\u0159ka, t\u00edm vy\u0161\u0161\u00ed pod\u00edl nenasycen\u00fdch mastn\u00fdch kyselin.<\/p>\n\n\n\n

V\u011bt\u0161ina \u010desk\u00e9 produkce m\u00e1ku je spot\u0159ebov\u00e1na v dom\u00e1cnostech, pek\u00e1rn\u00e1ch a cukr\u00e1\u0159sk\u00e9 v\u00fdrob\u011b, m\u00e1k je ov\u0161em tak\u00e9 vyu\u017e\u00edv\u00e1n ve farmaceutick\u00e9m pr\u016fmyslu k v\u00fdrob\u011b l\u00e9\u010div.<\/p>\n\n\n\n

Slune\u010dnice ro\u010dn\u00ed<\/h2>\n\n\n\n

Slune\u010dnice m\u00e1 velmi hodnotn\u00e1 semena, krom\u011b oleje jsou tak\u00e9 zdrojem protein\u016f a obsahuj\u00ed velk\u00e9 mno\u017estv\u00ed miner\u00e1l\u016f (p\u0159edev\u0161\u00edm v\u00e1pn\u00edk a fosfor) a vitam\u00edn\u016f (skupina B, A, D, K). Samotn\u00e9 mno\u017estv\u00ed oleje je z\u00e1visl\u00e9 i na \u0161\u00ed\u0159ce slupky, ide\u00e1ln\u00ed obsah je 45 a\u017e 65 %. Obsah d\u00e1le ovliv\u0148uje nap\u0159\u00edklad teplota nebo hnojen\u00ed. Uk\u00e1zalo se, \u017ee hnojen\u00ed dus\u00edkem olejnatost semen sni\u017euje.<\/p>\n\n\n\n

Slune\u010dnicov\u00fd olej se pro sv\u00e9 vlastnosti vyu\u017e\u00edv\u00e1 p\u0159ev\u00e1\u017en\u011b v potravin\u00e1\u0159stv\u00ed, uplatn\u011bn\u00ed nach\u00e1z\u00ed ale i v technick\u00fdch odv\u011btv\u00edch, kosmetice a jako zdroj obnoviteln\u00e9 energie.<\/p>\n\n\n\n

Len set\u00fd<\/h2>\n\n\n\n

Semeno lnu obsahuje tak\u00e9 tzv. vysychav\u00fd olej. Vysychav\u00e9 oleje se pou\u017e\u00edvaj\u00ed nap\u0159\u00edklad na o\u0161et\u0159ov\u00e1n\u00ed d\u0159eva, proto\u017ee polymerizuj\u00ed (chemick\u00e1 reakce, p\u0159i kter\u00e9 z molekul vznikaj\u00ed vysokomolekul\u00e1rn\u00ed l\u00e1tky) a tvo\u0159\u00ed tvrd\u00fd povrch. Na ln\u011bn\u00fd olej ov\u0161em naraz\u00edme i jako na dopln\u011bk stravy lid\u00ed a zv\u00ed\u0159at \u2013 posiluje imunitu a m\u016f\u017ee slou\u017eit jako prevence proti z\u00e1n\u011btliv\u00fdm pochod\u016fm v t\u011ble.<\/p>\n\n\n\n

Rozvoje p\u011bstov\u00e1n\u00ed lnu jsme se u n\u00e1s do\u010dkali a\u017e kolem roku 1990.  Mezi p\u011bstiteli o len dodnes nen\u00ed tak velk\u00fd z\u00e1jem jako o jin\u00e9 olejn\u00e9 plodiny s vy\u0161\u0161\u00edmi v\u00fdnosy.  <\/p>\n\n\n\n

\u00a9 Ad\u00e9la \u010cern\u00e1, OilStop
\u00a9 Foto: Freepik<\/p>","protected":false},"excerpt":{"rendered":"

Zem\u011bd\u011blstv\u00ed hraje v \u010cesk\u00e9 republice d\u016fle\u017eitou roli. Rostlinn\u00e1 v\u00fdroba je u n\u00e1s zam\u011b\u0159ena zejm\u00e9na na produkci potravin, krmiv a surovin pro farmaceutick\u00fd a potravin\u00e1\u0159sk\u00fd pr\u016fmysl. Nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed je p\u011bstov\u00e1n\u00ed obilnin, olejniny jsou ale v t\u011bsn\u00e9m z\u00e1v\u011bsu. P\u0159edstav\u00edme si ty nejzn\u00e1m\u011bj\u0161\u00ed i olej, kter\u00fd z nich m\u016f\u017eeme z\u00edskat. \u0158epka olejn\u00e1 Nejp\u011bstovan\u011bj\u0161\u00ed olejninou je u n\u00e1s \u0159epka olejn\u00e1, m\u016f\u017eeme se setkat… Read More »Olejniny p\u011bstovan\u00e9 v\u00a0\u010cR<\/span><\/a><\/p>","protected":false},"author":3,"featured_media":3586,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[1,11],"tags":[],"class_list":["post-3583","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aktuality","category-zivotni-prostredi"],"_links":{"self":[{"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/posts\/3583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/comments?post=3583"}],"version-history":[{"count":2,"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/posts\/3583\/revisions"}],"predecessor-version":[{"id":3585,"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/posts\/3583\/revisions\/3585"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/media\/3586"}],"wp:attachment":[{"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/media?parent=3583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/categories?post=3583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oilstop.cz\/en\/wp-json\/wp\/v2\/tags?post=3583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}