{"id":172314,"date":"2019-09-24T12:36:49","date_gmt":"2019-09-24T11:36:49","guid":{"rendered":"http:\/\/zakrasnejsivimperk.cz\/?p=172314"},"modified":"2019-09-24T12:36:49","modified_gmt":"2019-09-24T11:36:49","slug":"dtest-cerne-sackove-caje-povzbudi-neuskodi-neoslni","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=172314","title":{"rendered":"dTEST: \u010cern\u00e9 s\u00e1\u010dkov\u00e9 \u010daje \u2013 povzbud\u00ed, neu\u0161kod\u00ed, neosln\u00ed"},"content":{"rendered":"

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\u0158ada lid\u00ed za\u010d\u00edn\u00e1 den \u0161\u00e1lkem \u010dern\u00e9ho \u010daje, p\u0159i\u010dem\u017e v\u011bt\u0161inou s\u00e1hnou sp\u00ed\u0161e po rychl\u00e9m \u0159e\u0161en\u00ed v podob\u011b \u010daje v n\u00e1levov\u00fdch s\u00e1\u010dc\u00edch ne\u017e po sypan\u00e9 verzi. Spot\u0159ebitelsk\u00fd \u010dasopis dTest se proto rozhodl ov\u011b\u0159it, jak jsou na tom s kvalitou s\u00e1\u010dkov\u00e9 \u010dern\u00e9 \u010daje st\u0159edn\u00ed cenov\u00e9 hladiny, nab\u00edzen\u00e9 v supermarketech. N\u011bkter\u00e9 vzorky m\u011bly pot\u00ed\u017ee s pesticidy, z ochutn\u00e1vky \u010daje vyv\u00e1zly s pr\u016fm\u011brn\u00fdmi zn\u00e1mkami.<\/h6>\n

\"\"\u201eDvan\u00e1ct vzork\u016f jsme nechali proj\u00edt chemick\u00fdmi anal\u00fdzami, p\u0159i kter\u00fdch jsme sledovali jak ne\u017e\u00e1douc\u00ed, tak \u017e\u00e1douc\u00ed l\u00e1tky. V\u011bt\u0161ina testovan\u00fdch \u010daj\u016f v\u00e1s po r\u00e1nu povzbud\u00ed dostate\u010dnou d\u00e1vkou kofeinu, ale v\u00fdjime\u010dn\u00fd chu\u0165ov\u00fd pro\u017eitek ne\u010dekejte. I v leto\u0161n\u00edm testu jsme odhalili pot\u00ed\u017ee s pesticidy, ale po nejhor\u0161\u00ed zn\u00e1mce jsme tentokr\u00e1t na\u0161t\u011bst\u00ed s\u00e1hnout nemuseli,\u201c<\/em> shrnuje v\u00fdsledky testu \u0161\u00e9fredaktorka dTestu Hana Hoffmannov\u00e1.<\/p>\n

Za povzbuzuj\u00edc\u00ed \u00fa\u010dinky vd\u011b\u010d\u00ed \u010daj p\u0159edev\u0161\u00edm kofeinu, n\u00e1lev \u010dern\u00e9ho \u010daje je zhruba o polovinu slab\u0161\u00ed ne\u017e k\u00e1va. V gramu su\u0161en\u00fdch list\u016f \u010dern\u00e9ho \u010daje je pr\u016fm\u011brn\u011b 15\u201350\u2009mg kofeinu, p\u0159i\u010dem\u017e hodnoty kol\u00edsaj\u00ed v z\u00e1vislosti na druhu \u010dajovn\u00edku a m\u00edstu p\u011bstov\u00e1n\u00ed.<\/p>\n

\u201eNejvy\u0161\u0161\u00ed koncentraci kofeinu jsme zjistili u dm Bio Schwarzer Tee \u2013 v gramu l\u00edstk\u016f to bylo 26,1\u2009mg. Druh\u00fd v po\u0159ad\u00ed byl Ahmad Tea English Breakfast, kde na gram \u010daje p\u0159ipadlo 25,7\u2009mg kofeinu. P\u0159iprav\u00edte s n\u00edm ale siln\u011bj\u0161\u00ed n\u00e1lev ne\u017e s prvn\u011b jmenovan\u00fdm, proto\u017ee s\u00e1\u010dek ukr\u00fdv\u00e1 vy\u0161\u0161\u00ed gram\u00e1\u017e \u010daje,\u201c<\/strong> \u0159\u00edk\u00e1 Hana Hoffmannov\u00e1. Nejm\u00e9n\u011b kofeinu laborato\u0159 zm\u011b\u0159ila u zna\u010dky Albert, a to 15,2 mg\/g. N\u00edzkou koncentraci kofeinu v\u0161ak v\u00fdrobce kompenzuje velikost\u00ed s\u00e1\u010dku. V p\u0159epo\u010dtu na jednu porci tak zna\u010dka Albert obsadila a\u017e t\u0159et\u00ed pozici od konce p\u0159ed v\u00fdrobky Jem\u010da Pigi \u010caj a Dukat English Breakfast.<\/p>\n

Krom\u011b kofeinu \u010daj obsahuje tak\u00e9 theobromin \u2013 alkaloid, kter\u00fd si mo\u017en\u00e1 sp\u00ed\u0161 ne\u017e s \u010dajem spoj\u00edte s kakaem. I theobromin m\u00e1 povzbuzuj\u00edc\u00ed \u00fa\u010dinky, ov\u0161em slab\u0161\u00ed ne\u017e kofein. Podpr\u016fm\u011brn\u00e9 mno\u017estv\u00ed laborato\u0159 zjistila u trojice Albert \u010cern\u00fd \u010daj, Jem\u010da Pigi \u010daj a Tesco Black Tea. Nejl\u00e9pe dopadl p\u0159i hled\u00e1n\u00ed theobrominu Ahmad Tea English Breakfast.<\/p>\n

\"\"\u010caje jsou tak\u00e9 zn\u00e1m\u00e9 svou antioxida\u010dn\u00ed aktivitou. Znamen\u00e1 to, \u017ee dovedou zne\u0161kod\u0148ovat tzv. kysl\u00edkov\u00e9 radik\u00e1ly \u2013 reaktivn\u00ed \u010d\u00e1stice, kter\u00e9 mohou v t\u011ble po\u0161kozovat bu\u0148ky nebo molekuly DNA. Antioxida\u010dn\u00ed aktivita se u r\u016fzn\u00fdch druh\u016f \u010daje li\u0161\u00ed. Siln\u011bj\u0161\u00ed je u \u010daje oolong a zelen\u00e9ho, u \u010dern\u00fdch \u010daj\u016f je ni\u017e\u0161\u00ed. Nejlep\u0161\u00ed antioxida\u010dn\u00ed schopnosti v testu prok\u00e1zaly Ahmad Tea English Breakfast, dm Bio Schwarzer Tee a Lipton Yellow Label. Nevaln\u011b si v t\u00e9to discipl\u00edn\u011b naopak vedly Teekanne Black Label, Pick\u00adwick Rann\u00ed Classic a \u010daje Jem\u010da a Albert.<\/p>\n

Druh\u00e1 \u010d\u00e1st chemick\u00fdch anal\u00fdz c\u00edlila na ne\u017e\u00e1douc\u00ed l\u00e1tky. Laborato\u0159 se nejprve zam\u011b\u0159ila na polycyklick\u00e9 aromatick\u00e9 uhlovod\u00edky (PAH), kter\u00e9 mohou b\u00fdt karcinogenn\u00ed a do potravin se obvykle dost\u00e1vaj\u00ed z vn\u011bj\u0161\u00edho prost\u0159ed\u00ed, nap\u0159\u00edklad ze spalin. \u201eNa tyto l\u00e1tky jsme narazili ve v\u0161ech testovan\u00fdch vzorc\u00edch, ale na\u0161t\u011bst\u00ed v mal\u00e9m mno\u017estv\u00ed. V\u016fbec nejl\u00e9pe dopadl \u010daj zna\u010dky Old England, kter\u00fd byl t\u00e9m\u011b\u0159 \u010dist\u00fd,\u201c<\/em> uv\u00e1d\u00ed Hoffmannov\u00e1. Testy se zam\u011b\u0159ily i na l\u00e1tku antrachinon, kter\u00e1 se obvykle \u0159ad\u00ed mezi pesticidy, ov\u0161em v \u010daj\u00edch se m\u016f\u017ee objevit nejen coby poz\u016fstatek ochrany p\u0159ed \u0161k\u016fdci, ale rovn\u011b\u017e jako vn\u011bj\u0161\u00ed kontaminant p\u0159ich\u00e1zej\u00edc\u00ed nap\u0159. z pap\u00edrov\u00fdch obal\u016f. U zna\u010dek Pickwick, Tesco, Jem\u010da a Albert se obsah antrachinonu pohyboval t\u011bsn\u011b pod povolen\u00fdm limitem.<\/p>\n

C\u00edlem test\u016f bylo tak\u00e9 ov\u011b\u0159it, zda \u010daje nemaj\u00ed probl\u00e9m s pesticidy \u2013 laborato\u0159 p\u00e1trala po 600 l\u00e1tk\u00e1ch a alespo\u0148 jednu z nich na\u0161la ve v\u0161ech vzorc\u00edch. \u201eDobrou zpr\u00e1vou je, \u017ee zji\u0161t\u011bn\u00e9 koncentrace jednotliv\u00fdch pesticid\u016f nep\u0159ekro\u010dily povolen\u00e9 limity. Hor\u0161\u00ed zpr\u00e1vou je, \u017ee \u010daje m\u011bly probl\u00e9my s pesticidov\u00fdm koktejlem,\u201c<\/em> konstatuje Hana Hoffmannov\u00e1. A dod\u00e1v\u00e1: \u201ePouze po jedn\u00e9 l\u00e1tce jsme na\u0161li v trojici \u010daj\u016f zna\u010dek Albert, Lidl\/Lord Nelson a Zlat\u00fd \u0161\u00e1lek. Naopak nejvy\u0161\u0161\u00ed po\u010det pesticid\u016f laborato\u0159 detekovala v \u010daj\u00edch Teekanne Black Label, Lipton Yellow Label a Ahmad Tea English Breakfast. Na\u0161li jsme v nich 5 a\u017e 7 rezidu\u00ed najednou.\u201c<\/em><\/p>\n

Chut\u00ed testovan\u00fdch \u010daj\u016f nebyli hodnotitel\u00e9 pr\u00e1v\u011b nad\u0161eni, \u010daje si vesm\u011bs odnesly pr\u016fm\u011brn\u00e9 zn\u00e1mky. Nejm\u00e9n\u011b odborn\u00edk\u016fm chutnal \u010dern\u00fd \u010daj Albert, p\u0159edev\u0161\u00edm kv\u016fli sv\u00edrav\u00e9 chuti. Nav\u00edc si u n\u011bj st\u011b\u017eovali na d\u0159evitou pachu\u0165, kter\u00e1 jim vadila i u zna\u010dky Tesco. Nejlep\u0161\u00ed dojem na komisi ud\u011blal Teekanne Black Label, kter\u00e9mu dobr\u00e9 sk\u00f3re pokazila pouze p\u0159\u00edli\u0161 sv\u011btl\u00e1 barva.<\/p>\n

P\u0159ehled testovan\u00fdch \u010dern\u00fdch \u010daj\u016f najdete na webu: www.dtest.cz\/cerny-caj<\/a>. Kompletn\u00ed v\u00fdsledky testu p\u0159ineslo z\u00e1\u0159ijov\u00e9 vyd\u00e1n\u00ed \u010dasopisu dTest.<\/strong><\/p>\n

Text a foto: dTEST<\/strong><\/p>\n

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\u0158ada lid\u00ed <\/p>\n","protected":false},"author":2,"featured_media":172320,"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\/2019\/09\/24\/r\u00e1me\u010dek-\u010daje.jpg","_links":{"self":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/172314"}],"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=172314"}],"version-history":[{"count":3,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/172314\/revisions"}],"predecessor-version":[{"id":172321,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/172314\/revisions\/172321"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/media\/172320"}],"wp:attachment":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=172314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=172314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=172314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}