{"id":182683,"date":"2020-01-21T10:10:18","date_gmt":"2020-01-21T09:10:18","guid":{"rendered":"http:\/\/zakrasnejsivimperk.cz\/?p=182683"},"modified":"2020-01-21T10:12:55","modified_gmt":"2020-01-21T09:12:55","slug":"dtest-repkove-oleje-prijemne-prekvapily-nejvice-se-hodi-na-smazeni","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=182683","title":{"rendered":"dTEST: \u0158epkov\u00e9 oleje p\u0159\u00edjemn\u011b p\u0159ekvapily, nejv\u00edce se hod\u00ed na sma\u017een\u00ed"},"content":{"rendered":"
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Ilustra\u010dn\u00ed foto: pixabay<\/figcaption><\/figure>\n

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\u0158epka se u n\u00e1s p\u011bstuje na 83,5 % osevn\u00ed plochy vyhrazen\u00e9 olejnin\u00e1m. \u0158epkov\u00fd olej v\u0161ak v pr\u016fzkumech obl\u00edbenosti u \u010desk\u00fdch kucha\u0159\u016f a kucha\u0159ek zauj\u00edm\u00e1 a\u017e druh\u00e9 m\u00edsto, a to hned po oleji slune\u010dnicov\u00e9m. Testov\u00e1n\u00edm spot\u0159ebitelsk\u00e9 organizace dTest pro\u0161lo 17 \u0159epkov\u00fdch olej\u016f a v\u0161echny si odnesly p\u0159inejhor\u0161\u00edm dobr\u00e9 hodnocen\u00ed.<\/h6>\n

\"\"Krom\u011b rafinovan\u00fdch olej\u016f zn\u00e1m\u00fdch i priv\u00e1tn\u00edch zna\u010dek byl sou\u010d\u00e1st\u00ed testu i jeden nerafinovan\u00fd, za studena lisovan\u00fd. Sedm olej\u016f poch\u00e1zelo z \u010cesk\u00e9 republiky, \u010dty\u0159i byly n\u011bmeck\u00e9, dva z Ma\u010farska, dva z EU, jeden rakousk\u00fd a jeden bez ozna\u010den\u00ed zem\u011b p\u016fvodu. Testov\u00e1n\u00ed se zam\u011b\u0159ilo na kondici a stabilitu, slo\u017een\u00ed, bezpe\u010dnost a chu\u0165ov\u00e9 vlastnosti.<\/p>\n

\u201eMezi nejd\u016fle\u017eit\u011bj\u0161\u00ed znaky kvality \u0159ad\u00edme takzvan\u00e1 tukov\u00e1 \u010d\u00edsla, kter\u00e1 vypov\u00eddaj\u00ed o \u017eluklosti oleje a o jeho stabilit\u011b. Sledovali jsme, jak dlouho olej vydr\u017e\u00ed vzdorovat vy\u0161\u0161\u00ed teplot\u011b, ne\u017e se v n\u011bm za\u010dnou vytv\u00e1\u0159et peroxidov\u00e9 produkty \u017eluknut\u00ed,\u201c<\/em> uv\u00e1d\u00ed Hana Hoffmannov\u00e1, \u0161\u00e9fredaktorka \u010dasopisu dTest. Limity pro tyto parametry v \u010cesk\u00e9 republice neexistuj\u00ed, dTest si proto vypomohl n\u011bmeckou sm\u011brnic\u00ed. Ne v\u0161em testovan\u00fdm v\u00fdrobk\u016fm se poda\u0159ilo jej\u00edm po\u017eadavk\u016fm vyhov\u011bt.<\/p>\n

Trochu odli\u0161n\u011b dTest p\u0159istupoval k oleji Globus Natives Kaltgepresstes Raps\u00f6l, jeliko\u017e se jedn\u00e1 o olej nerafinovan\u00fd, a t\u00edm p\u00e1dem pro n\u011bj plat\u00ed i m\u00edrn\u011bj\u0161\u00ed limity. Je v\u0161ak t\u0159eba \u0159\u00edci, \u017ee v porovn\u00e1n\u00ed s rafinovan\u00fdmi oleji vykazoval ve v\u0161ech sm\u011brech men\u0161\u00ed stabilitu. Ta se projevila nap\u0159\u00edklad i ni\u017e\u0161\u00ed tepelnou odolnost\u00ed.<\/p>\n

Kondici oleje lze zjistit u\u017e pouh\u00fdm ochutn\u00e1n\u00edm. T\u00edmto zp\u016fsobem dTest zji\u0161\u0165oval tak\u00e9 p\u0159\u00edjemnost v\u016fn\u011b, chuti, intenzitu pal\u010divosti a ciz\u00edch p\u0159\u00edchut\u00ed a pach\u016f. V\u0161echny oleje si byly velmi podobn\u00e9 a z pochopiteln\u00fdch d\u016fvod\u016f specifickou barvou a chut\u00ed vy\u010dn\u00edval nerafinovan\u00fd olej z Globusu Natives Kaltgepresstes Raps\u00f6l. Bohu\u017eel se u n\u011bj objevila i \u017elukl\u00e1 chu\u0165, za co\u017e si odnesl uspokojiv\u00e9 hodnocen\u00ed.<\/p>\n

\u201eZ\u00e1sadn\u00ed sou\u010d\u00e1st\u00ed olej\u016f jsou mastn\u00e9 kyseliny, nicm\u00e9n\u011b v \u0159epce se p\u0159irozen\u011b objevuje tak\u00e9 kyselina erukov\u00e1, kter\u00e1 m\u016f\u017ee p\u0159i nadm\u011brn\u00e9 konzumaci \u0161kodit srdci. V \u0159epkov\u00e9m oleji je proto jej\u00ed mno\u017estv\u00ed omezeno. Anal\u00fdza mastn\u00fdch kyselin uk\u00e1zala, \u017ee v \u017e\u00e1dn\u00e9m z testovan\u00fdch olej\u016f limit nebyl p\u0159ekro\u010den a nebylo zji\u0161t\u011bno ani fal\u0161ov\u00e1n\u00ed \u0159epkov\u00e9ho oleje jin\u00fdm,\u201c<\/em> uji\u0161\u0165uje Hana Hoffmannov\u00e1.<\/p>\n

Sou\u010d\u00e1st\u00ed testov\u00e1n\u00ed bylo i p\u00e1tr\u00e1n\u00ed po v\u00edce ne\u017e 300 r\u016fzn\u00fdch pesticidech, v\u010detn\u011b nechvaln\u011b zn\u00e1m\u00e9ho glyfos\u00e1tu. V\u011bt\u0161ina testovan\u00fdch vzork\u016f v\u0161ak jejich p\u0159\u00edtomnost neodhalila. Pouze t\u0159i oleje obsahovaly n\u011bjak\u00e9 pesticidy, nicm\u00e9n\u011b nejv\u00fd\u0161e na \u00farovni p\u011btiny povolen\u00fdch limit\u016f. Glyfos\u00e1t se pak neobjevil ani u jednoho z testovan\u00fdch vzork\u016f. Pravd\u011bpodobn\u00fdm d\u016fvodem nep\u0159\u00edtomnosti pesticid\u016f je rafinace olej\u016f, kter\u00e1 je v tomto ohledu p\u0159\u00ednosn\u00e1, nicm\u00e9n\u011b n\u011bkter\u00e9 ne\u017e\u00e1douc\u00ed l\u00e1tky p\u0159i n\u00ed naopak mohou vzniknout. Zm\u00ednit m\u016f\u017eeme nejd\u016fle\u017eit\u011bj\u0161\u00ed z nich \u2013 MPCD, co\u017e je zkratka pro karcinogenn\u00ed l\u00e1tku monochlorpropandiol. I v tomto ohledu pro\u0161ly v\u0161echny oleje bez pot\u00ed\u017e\u00ed.<\/p>\n

Ka\u017ed\u00fd olej m\u00e1 sv\u00e9 jedine\u010dn\u00e9 vlastnosti. T\u0159eba slune\u010dnicov\u00fd nen\u00ed kv\u016fli vy\u0161\u0161\u00edmu pod\u00edlu polynenasycen\u00fdch mastn\u00fdch kyselin p\u0159\u00edli\u0161 vhodn\u00fd na sma\u017een\u00ed. Naopak rafinovan\u00e9 oleje z \u0159epky \u010di oliv je mo\u017en\u00e9 pro pou\u017eit\u00ed za vysok\u00fdch teplot doporu\u010dit. P\u0159i sma\u017een\u00ed je t\u0159eba se \u00fapln\u011b vyhnout olej\u016fm nerafinovan\u00fdm, za studena lisovan\u00fdm. O odolnosti oleje v\u016f\u010di z\u00e1h\u0159evu vypov\u00edd\u00e1 tzv. bod zakou\u0159en\u00ed, tedy teplota, p\u0159i kter\u00e9 se olej za\u010dne rozkl\u00e1dat a vznik\u00e1 nad n\u00edm kou\u0159. Zat\u00edmco rafinovan\u00fd \u0159epkov\u00fd olej vydr\u017e\u00ed a\u017e do 240 \u00b0C, z nerafinovan\u00e9ho se za\u010dne kou\u0159it u\u017e p\u0159i 107 stupn\u00edch.<\/p>\n

I oleje, kter\u00e9 se v hodnocen\u00ed objevily a\u017e na konci po\u0159ad\u00ed, v\u0161ak mohou v kuchyni dob\u0159e poslou\u017eit, nejni\u017e\u0161\u00ed zn\u00e1mky byly dobr\u00e9. P\u0159ehled testovan\u00fdch \u0159epkov\u00fdch olej\u016f najdete na webu www.dtest.cz\/repkove-oleje<\/strong><\/a>. Kompletn\u00ed v\u00fdsledky testu p\u0159ineslo lednov\u00e9 vyd\u00e1n\u00ed \u010dasopisu dTest.<\/p>\n

Rafinovan\u00fd vs. nerafinovan\u00fd olej:<\/strong><\/h6>\n

\u2022 Vstupn\u00ed surovina pro v\u00fdrobu oleje se nejd\u0159\u00edve pomele a pot\u00e9 se z n\u00ed lisuje nebo extrahuje olej. D\u00edky vylisov\u00e1n\u00ed a p\u0159efiltrov\u00e1n\u00ed se z\u00edsk\u00e1v\u00e1 olej nerafinovan\u00fd.<\/p>\n

\u2022 N\u011bkter\u00e9 oleje d\u00e1le mohou proch\u00e1zet rafinac\u00ed, jej\u00edm\u017e \u00fa\u010delem je olej vy\u010distit od r\u016fzn\u00fdch p\u0159\u00edm\u011bs\u00ed, a zajistit tak, aby byl pachov\u011b i chu\u0165ov\u011b neutr\u00e1ln\u00ed.<\/p>\n

\u2022 Do rafinace zahrnujeme odslizen\u00ed (odstran\u011bn\u00ed l\u00e1tek rozpustn\u00fdch ve vod\u011b), d\u00e1le neutralizaci (eliminace voln\u00fdch mastn\u00fdch kyselin) a b\u011blen\u00ed. Posledn\u00edm krokem je deodorace, p\u0159i kter\u00e9 se odstra\u0148uj\u00ed ne\u017e\u00e1douc\u00ed pachy a chut\u011b.<\/p>\n

\u2022D\u00edky rafinaci se olej st\u00e1v\u00e1 stabiln\u00edm a trvanliv\u00fdm. Jsou tak toti\u017e odstran\u011bny v\u0161echny l\u00e1tky, kter\u00e9 by mohly urychlit jeho \u017eluknut\u00ed nebo by nevydr\u017eely vysok\u00e9 teploty p\u0159i sma\u017een\u00ed. Proto jsou rafinovan\u00e9 oleje vhodn\u00e9 pr\u00e1v\u011b pro sma\u017een\u00ed.<\/p>\n

\u2022 Nerafinovan\u00e9 oleje jsou typick\u00e9 svou chut\u00ed i v\u016fn\u00ed, ale i mo\u017enost\u00ed zachovat si vy\u0161\u0161\u00ed obsah n\u011bkter\u00fdch v\u00fd\u017eivov\u011b zaj\u00edmav\u00fdch l\u00e1tek. Maj\u00ed krat\u0161\u00ed dobu trvanlivosti a vy\u017eaduj\u00ed speci\u00e1ln\u00ed zach\u00e1zen\u00ed (skladov\u00e1n\u00ed v chladu a temnu).<\/p>\n

dTEST<\/strong><\/p>\n

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Ilustra\u010dn\u00ed foto: pixabay<\/figcaption><\/figure>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

  \u0158epka <\/p>\n","protected":false},"author":2,"featured_media":182686,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[87],"tags":[],"jetpack_featured_media_url":"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/21\/r\u00e1me\u010dek-oleje.jpg","_links":{"self":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/182683"}],"collection":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=182683"}],"version-history":[{"count":4,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/182683\/revisions"}],"predecessor-version":[{"id":182690,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/182683\/revisions\/182690"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/media\/182686"}],"wp:attachment":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=182683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=182683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=182683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}