\u0158epkov\u00fd olej je odborn\u00edky na v\u00fd\u017eivu pova\u017eov\u00e1n za jeden z nejlep\u0161\u00edch olej\u016f pro vyu\u017eit\u00ed v kuchyni. M\u00e1 vyv\u00e1\u017een\u00e9 zastoupen\u00ed mastn\u00fdch kyselin a z b\u011b\u017en\u00fdch olej\u016f pat\u0159\u00ed mezi dobr\u00e9 zdroje v na\u0161\u00ed strav\u011b nedostatkov\u00fdch omega 3 mastn\u00fdch kyselin. Nicm\u00e9n\u011b to neznamen\u00e1, \u017ee by v\u00fd\u017eivov\u00e1 hodnota oleje ne\u0161la je\u0161t\u011b n\u011bjak\u00fdm zp\u016fsobem vylep\u0161it. <\/p>\n\n\n\n
Metabolismus kyseliny \u03b1-linolenov\u00e9<\/strong><\/p>\n\n\n\n V \u0159epkov\u00e9m oleji je ze skupiny omega 3 mastn\u00fdch kyselin zastoupena kyselina \u03b1-linolenov\u00e1. Ta v organismu podl\u00e9h\u00e1 konverzi, p\u0159i n\u00ed\u017e doch\u00e1z\u00ed k prodlu\u017eov\u00e1n\u00ed uhl\u00edkov\u00e9ho \u0159et\u011bzce mastn\u00e9 kyseliny a zvy\u0161ov\u00e1n\u00ed po\u010dtu dvojn\u00fdch vazeb v molekule. Typick\u00fdmi z\u00e1stupci t\u00e9to metabolick\u00e9 p\u0159em\u011bny jsou kyseliny eikosapentaenov\u00e1 (EPA) a dokosahexaenov\u00e1 (DHA). Ty hraj\u00ed d\u016fle\u017eitou roli v \u0159ad\u011b proces\u016f v organismu a pod\u00edlej\u00ed se na spr\u00e1vn\u00e9m fungov\u00e1n\u00ed ka\u017ed\u00e9 bu\u0148ky vzhledem k tomu, \u017ee jsou sou\u010d\u00e1st\u00ed bun\u011b\u010dn\u00fdch membr\u00e1n. Jak mimo jin\u00e9 vypl\u00fdv\u00e1 ze schv\u00e1len\u00fdch zdravotn\u00edch tvrzen\u00ed<\/a>, jsou d\u016fle\u017eit\u00e9 pro spr\u00e1vnou funkci mozku a zraku, p\u0159isp\u00edvaj\u00ed k norm\u00e1ln\u00ed \u010dinnosti srdce a udr\u017een\u00ed norm\u00e1ln\u00edho tlaku. Jsou rovn\u011b\u017e d\u016fle\u017eit\u00e9 pro spr\u00e1vn\u00fd v\u00fdvoj plodu a kojenc\u016f. Proto je tak\u00e9 t\u0159eba, aby t\u011bhotn\u00e9 a koj\u00edc\u00ed \u017eeny m\u011bly dostate\u010dn\u00fd p\u0159\u00edjem omega 3 mastn\u00fdch kyselin s prodlou\u017een\u00fdm \u0159et\u011bzcem. <\/p>\n\n\n\n Pseudoesenci\u00e1ln\u00ed EPA a DHA<\/strong><\/p>\n\n\n\n Konverze kyseliny \u03b1-linolenov\u00e9 na EPA a DHA je relativn\u011b n\u00edzk\u00e1. V p\u0159\u00edpad\u011b vzniku kyseliny dokosahexaenov\u00e9 prob\u00edh\u00e1jen v \u0159\u00e1du n\u011bkolika procent<\/a>. Proto jsou EPA a DHA n\u011bkdy ozna\u010dov\u00e1ny jako pseudoesenci\u00e1ln\u00ed. Organismus si je sice um\u00ed vytvo\u0159it, ale ne ve zcela posta\u010duj\u00edc\u00edm mno\u017estv\u00ed. Proto je t\u0159eba jejich p\u0159\u00edjem do organismu dopl\u0148ovat prost\u0159ednictv\u00edm stravy. To je i d\u016fvodem v\u00fd\u017eivov\u00fdch doporu\u010den\u00ed na b\u00e1zi potravin, kdy se rad\u00ed za\u0159azovat do j\u00eddeln\u00ed\u010dku pravidelnou konzumaci ryb nejm\u00e9n\u011b dvakr\u00e1t t\u00fddn\u011b, z toho alespo\u0148 jedna z ryb by m\u011bla b\u00fdt tu\u010dn\u00e1. Probl\u00e9m z tohoto pohledu maj\u00ed vegani, kte\u0159\u00ed nekonzumuj\u00ed ryby ani jin\u00e9 \u017eivo\u010di\u0161n\u00e9 produkty. Ti jsou v\u00edce m\u00e9n\u011b odk\u00e1z\u00e1ni na konzumaci dopl\u0148k\u016f stravy, kde EPA a DHA poch\u00e1zej\u00ed nap\u0159. z \u0159as. V\u011bdci se proto zam\u00fd\u0161lej\u00ed, jak zv\u00fd\u0161it, pokud mo\u017eno nen\u00e1silnou formou, p\u0159\u00edjem omega 3 mastn\u00fdch kyselin s prodlou\u017een\u00fdm \u0159et\u011bzcem (DHA a EPA). Spot\u0159ebitel\u00e9 k dosa\u017een\u00ed jejich dostate\u010dn\u00e9ho p\u0159\u00edjmu konzumuj\u00ed dopl\u0148ky stravy s t\u011bmito l\u00e1tkami a v\u00fdrobci o n\u011b rovn\u011b\u017e obohacuj\u00ed \u0159adu potravin. <\/p>\n\n\n\n V\u00fdvoj speci\u00e1ln\u00edho \u0159epkov\u00e9ho oleje<\/strong><\/p>\n\n\n\n V\u00fdzkumn\u00edci z firmy Nuseed p\u0159i\u0161li s dal\u0161\u00edm alternativn\u00edm \u0159e\u0161en\u00edm, jak zv\u00fd\u0161it p\u0159\u00edjem EPA a DHA. Pomoc\u00ed genetick\u00e9ho in\u017een\u00fdrstv\u00ed se poda\u0159ilo vyvinout speci\u00e1ln\u00ed variantu \u0159epky olejky<\/a>, kter\u00e1 tyto l\u00e1tky p\u0159\u00edmo produkuje v semeni b\u011bhem vegeta\u010dn\u00edho obdob\u00ed. Olej z n\u00ed z\u00edskan\u00fd je ji\u017e komer\u010dn\u011b dostupn\u00fd. Jeho \u0161ir\u0161\u00edmu uplatn\u011bn\u00ed na trhu v\u0161ak br\u00e1n\u00ed legislativa n\u011bkter\u00fdch zem\u00ed. Nap\u0159\u00edklad Evropsk\u00e1 unie se dlouhodob\u011b br\u00e1n\u00ed uv\u00e1d\u011bn\u00ed geneticky modifikovan\u00fdch potravin na sv\u016fj vnit\u0159n\u00ed trh. Uvid\u00edme, zda se tento postoj do budoucna v n\u011bkter\u00fdch p\u0159\u00edpadech zm\u011bn\u00ed. Genetick\u00e1 informace se obvykle p\u0159en\u00e1\u0161\u00ed prost\u0159ednictv\u00edm b\u00edlkovinn\u00e9 slo\u017eky do potravin. Olej, kter\u00fd b\u00edlkoviny neobsahuje, je proto z hlediska potenci\u00e1ln\u00edch rizik v\u00edce bezpe\u010dn\u00fd ne\u017e jin\u00e9 potraviny proteiny obsahuj\u00edc\u00ed. Na druhou stranu je spr\u00e1vn\u00e9, \u017ee se ka\u017ed\u00e1 potravina posuzuje individu\u00e1ln\u011b. Jin\u00e9 kontinenty jsou ve vztahu ke geneticky modifikovan\u00fdm potravin\u00e1m v\u00edce benevolentn\u00ed. Produkt je schv\u00e1len<\/a> pro \u00fa\u010dely v\u00fd\u017eivy v Austr\u00e1lii, Kanad\u011b a na Nov\u00e9m Z\u00e9landu, rovn\u011b\u017e Americk\u00fd \u00fa\u0159ad pro kontrolu potravin a l\u00e9\u010div FDA neshledal \u017e\u00e1dn\u00e9 vady, kter\u00e9 by br\u00e1nily jeho konzumaci. Ne\u017e se v\u0161ak dostane tento speci\u00e1ln\u00ed \u0159epkov\u00fd olej na n\u00e1\u0161 trh si budeme muset je\u0161t\u011b po\u010dkat. <\/p>\n\n\n\n Vyu\u017eit\u00ed pro krmn\u00e9 \u00fa\u010dely<\/strong><\/p>\n\n\n\n Nicm\u00e9n\u011b olej je ji\u017e v sou\u010dasnosti vyu\u017e\u00edv\u00e1n pro krmn\u00e9 \u00fa\u010dely i v Evrop\u011b. Je sou\u010d\u00e1st\u00ed krmn\u00fdch sm\u011bs\u00ed pro ryby chovan\u00e9 na farm\u00e1ch, nap\u0159. v Norsku.<\/a> Losos, kter\u00fd ne\u017eije ve voln\u00e9 p\u0159\u00edrod\u011b, m\u00e1 nedostate\u010dn\u00fd p\u0159\u00edjem t\u011bchto omega 3 mastn\u00fdch kyselin. Jejich p\u0159irozen\u00fdm potravn\u00edm zdrojem jsou drobn\u00ed kor\u00fd\u0161i a ryby, p\u0159\u00edpadn\u011b plankton. Proto je snaha tento chyb\u011bj\u00edc\u00ed zdroj omega 3 mastn\u00fdch kyselin u ryb z farem n\u011bjak\u00fdm zp\u016fsobem nahradit a \u0159epkov\u00fd olej s t\u00edmto speci\u00e1ln\u00edm slo\u017een\u00edm je jednou z mo\u017enost\u00ed. <\/p>\n\n\n\n Jak\u00fdm zp\u016fsobem se bude olej konzumovat?<\/strong><\/p>\n\n\n\n Podle dostupn\u00fdch zdroj\u016f<\/a> by m\u011bl olej obsahovat srovnateln\u00e9 mno\u017estv\u00ed EPA a DHA jako n\u011bkter\u00e9 ryb\u00ed tuky \u010di oleje z \u0159as, dvojn\u00e1sobek kyseliny \u03b1-linolenov\u00e9 a v porovn\u00e1n\u00ed s ryb\u00edm tukem ni\u017e\u0161\u00ed pod\u00edl nasycen\u00fdch mastn\u00fdch kyselin. Z toho vypl\u00fdv\u00e1 pot\u0159eba konzumace relativn\u011b n\u00edzk\u00e9ho mno\u017estv\u00ed oleje k dosa\u017een\u00ed doporu\u010den\u00e9ho mno\u017estv\u00ed p\u0159\u00edjmu EPA a DHA. Nap\u0159. Evropsk\u00fd \u00fa\u0159ad pro bezpe\u010dnost potravin EFSA doporu\u010duje jejich denn\u00ed p\u0159\u00edjem na \u00farovni 250 mg<\/a>. Proto bude tento olej sp\u00ed\u0161e konzumov\u00e1n jako dopln\u011bk stravy, p\u0159\u00edpadn\u011b j\u00edm budou obohacov\u00e1ny n\u011bkter\u00e9 potraviny. Olej by nem\u011bl m\u00edt v\u00fdraznou chu\u0165 ani v\u016fni, kter\u00e9 by omezovaly jeho pou\u017eit\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":" \u0158epkov\u00fd olej je odborn\u00edky na v\u00fd\u017eivu pova\u017eov\u00e1n za jeden z nejlep\u0161\u00edch olej\u016f pro vyu\u017eit\u00ed v kuchyni. M\u00e1 vyv\u00e1\u017een\u00e9 zastoupen\u00ed mastn\u00fdch kyselin a z b\u011b\u017en\u00fdch olej\u016f pat\u0159\u00ed mezi dobr\u00e9 zdroje v na\u0161\u00ed strav\u011b nedostatkov\u00fdch omega 3 mastn\u00fdch kyselin. Nicm\u00e9n\u011b to neznamen\u00e1, \u017ee by v\u00fd\u017eivov\u00e1 hodnota oleje ne\u0161la je\u0161t\u011b n\u011bjak\u00fdm zp\u016fsobem vylep\u0161it. Metabolismus kyseliny \u03b1-linolenov\u00e9 V \u0159epkov\u00e9m […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=\/wp\/v2\/posts\/1219"}],"collection":[{"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1219"}],"version-history":[{"count":1,"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=\/wp\/v2\/posts\/1219\/revisions"}],"predecessor-version":[{"id":1220,"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=\/wp\/v2\/posts\/1219\/revisions\/1220"}],"wp:attachment":[{"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.olejnadzlato.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}