Co je myoglobin?<\/p>\n
Myoglobin je b\u00edlkovina, kter\u00e1 se p\u0159irozen\u011b nach\u00e1z\u00ed v\u00a0kostern\u00ed i\u00a0srde\u010dn\u00ed svalovin\u011b obratlovc\u016f. Jej\u00edm hlavn\u00edm \u00fakolem je v\u00e1zat a\u00a0ukl\u00e1dat kysl\u00edk, kter\u00fd svalov\u00e9 bu\u0148ky vyu\u017e\u00edvaj\u00ed p\u0159i sv\u00e9 \u010dinnosti.<\/p>\n
Sou\u010d\u00e1st\u00ed myoglobinu je hem obsahuj\u00edc\u00ed atom \u017eeleza, jen\u017e umo\u017e\u0148uje vazbu kysl\u00edku a\u00a0z\u00e1rove\u0148 se pod\u00edl\u00ed na typick\u00e9m \u010derven\u00e9m zbarven\u00ed masa. \u010c\u00edm v\u00edce myoglobinu svalovina obsahuje, t\u00edm b\u00fdv\u00e1 tmav\u0161\u00ed. Hov\u011bz\u00ed maso ho m\u00e1 nap\u0159\u00edklad v\u00fdrazn\u011b v\u00edce ne\u017e ku\u0159ec\u00ed.<\/p>\n
P\u0159i tepeln\u00e9 \u00faprav\u011b se struktura myoglobinu m\u011bn\u00ed, co\u017e ovliv\u0148uje v\u00fdslednou barvu, v\u016fni i\u00a0chu\u0165 masa.<\/p>\n
Myoglobin m\u016f\u017ee vylep\u0161it chu\u0165 i\u00a0v\u00fd\u017eivovou hodnotu<\/p>\n
Geneticky upraven\u00e9 rostliny n\u00e1sledn\u011b bez zjevn\u00fdch pot\u00ed\u017e\u00ed rostly a\u00a0schopnost vytv\u00e1\u0159et myoglobin p\u0159ed\u00e1valy i\u00a0dal\u0161\u00ed generaci. V\u00fdsledky v\u00fdzkumu byly tento m\u011bs\u00edc publikov\u00e1ny v\u00a0\u010dasopise Frontiers in Plant Science<\/a>.<\/p>\n Pou\u017eit\u00e1 metoda vedla k\u00a0produkci p\u0159ibli\u017en\u011b 810\u00a0mg myoglobinu na kilogram su\u0161iny u\u00a0sal\u00e1tu a\u00a0800\u00a0mg na kilogram su\u0161iny u\u00a0tab\u00e1ku. Obsah myoglobinu ve zv\u00ed\u0159ec\u00ed svalovin\u011b je sice p\u0159ibli\u017en\u011b desetkr\u00e1t vy\u0161\u0161\u00ed, auto\u0159i studie ale upozor\u0148uj\u00ed, \u017ee p\u011bstov\u00e1n\u00ed rostlin je na zdroje v\u00fdrazn\u011b m\u00e9n\u011b n\u00e1ro\u010dn\u00e9 ne\u017e tradi\u010dn\u00ed chov hospod\u00e1\u0159sk\u00fdch zv\u00ed\u0159at.<\/p>\n V p\u0159epo\u010dtu na hektar by tak rostlinn\u00e1 produkce mohla b\u00fdt konkurenceschopn\u00e1 a\u00a0z\u00e1rove\u0148 spot\u0159ebov\u00e1vat m\u00e9n\u011b vody a\u00a0vytv\u00e1\u0159et m\u00e9n\u011b sklen\u00edkov\u00fdch plyn\u016f. Skute\u010dnou ekonomickou a\u00a0ekologickou bilanc\u00ed v\u00fdroby se ale v\u00fdzkum nezab\u00fdval.<\/p>\n K b\u011b\u017en\u00e9mu vyu\u017eit\u00ed vede je\u0161t\u011b dlouh\u00e1 cesta<\/p>\n Jako nejpravd\u011bpodobn\u011bj\u0161\u00ed vyu\u017eit\u00ed se zat\u00edm jev\u00ed myoglobin z\u00a0rostlin z\u00edskat, vy\u010distit a\u00a0n\u00e1sledn\u011b p\u0159idat do rostlinn\u00fdch n\u00e1hra\u017eek masa. Do budoucna v\u011bdci nevylu\u010duj\u00ed ani p\u0159\u00edm\u011bj\u0161\u00ed vyu\u017eit\u00ed.<\/p>\n \u201eDouf\u00e1me, \u017ee sal\u00e1t geneticky upraven\u00fd tak, aby produkoval myoglobin, by jednou mohl slou\u017eit jako potravina obohacen\u00e1 o\u00a0hemov\u00e9 \u017eelezo,\u201c uvedla spoluautorka studie Kyoko Morimotov\u00e1 pro zpravodajsk\u00fd port\u00e1l Phys<\/a>.<\/p>\n Takov\u00e1 potravina by ale nejd\u0159\u00edve musela proj\u00edt rozs\u00e1hl\u00fdmi bezpe\u010dnostn\u00edmi testy a\u00a0z\u00edskat povolen\u00ed \u00fa\u0159ad\u016f. Rostliny byly nav\u00edc zat\u00edm p\u011bstov\u00e1ny pouze v\u00a0kontrolovan\u00fdch laboratorn\u00edch podm\u00ednk\u00e1ch a\u00a0studie neov\u011b\u0159ovala jejich chu\u0165 ani chov\u00e1n\u00ed p\u0159i zpracov\u00e1n\u00ed \u010di tepeln\u00e9 \u00faprav\u011b.<\/p>\n![](\"https:\/\/www.europesays.com\/cz\/wp-content\/uploads\/2026\/08\/1786765094_221_pavla-ticha-lekarka-univerzita-karlova.jpeg\")
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<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"T\u00fdm v\u011bdc\u016f z\u00a0Imperial College London vlo\u017eil gen pro myoglobin p\u0159\u00edmo do chloroplast\u016f mlad\u00fdch rostlin. Pou\u017eili k\u00a0tomu takzvanou genovou…\n","protected":false},"author":2,"featured_media":180009,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[11],"tags":[16907,4054,490,5751,16908,6124,34225,4264,54,148,77,53,52,65,7124],"class_list":["post-180008","post","type-post","status-publish","format-standard","has-post-thumbnail","category-svet","tag-bilkoviny","tag-chov","tag-dna","tag-maso","tag-protein","tag-rostliny","tag-salaty","tag-stravovani","tag-svet","tag-tabak","tag-veda","tag-world","tag-world-news","tag-zelenina","tag-zivocichove"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/117097444800356807","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/180008","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/comments?post=180008"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/180008\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/180009"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=180008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=180008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=180008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}