{"id":203345,"date":"2020-09-17T19:05:44","date_gmt":"2020-09-17T18:05:44","guid":{"rendered":"http:\/\/zakrasnejsivimperk.cz\/?p=203345"},"modified":"2020-09-17T19:05:44","modified_gmt":"2020-09-17T18:05:44","slug":"tz-dtest-susene-houby-v-suchu","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=203345","title":{"rendered":"TZ dTest: Su\u0161en\u00e9 houby v suchu"},"content":{"rendered":"

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P\u0159esto\u017ee jsou \u010ce\u0161i n\u00e1rodem houba\u0159\u016f, pat\u0159\u00ed su\u0161en\u00e9 h\u0159iby, li\u0161ky, Jid\u00e1\u0161ovo ucho \u010di shiitake ke st\u00e1l\u00e9mu sortimentu obchod\u016f. V r\u00e1mci nejnov\u011bj\u0161\u00edho testu prov\u011b\u0159il dTest kvalitu tohoto zbo\u017e\u00ed a p\u0159\u00edtomnost ne\u017e\u00e1douc\u00edch l\u00e1tek. Spole\u010dn\u011b s produkty z obchod\u016f otestovala spot\u0159ebitelsk\u00e1 organizace i t\u0159i vzorky dom\u00e1c\u00edch su\u0161en\u00fdch hub. O\u010dek\u00e1v\u00e1n\u00ed, \u017ee houby p\u0159edstavuj\u00ed koktejl pesticid\u016f a t\u011b\u017ek\u00fdch kov\u016f, se zcela nepotvrdila.<\/h6>\n

\"\"Obliba hub je v \u010cesku velik\u00e1. Nep\u0159ekvap\u00ed proto, \u017ee obchody a e-shopy je nab\u00edzej\u00ed v su\u0161en\u00e9 podob\u011b b\u011b\u017en\u011b. Na trhu se daj\u00ed sehnat lesn\u00ed houby spole\u010dn\u011b s cizokrajn\u00fdmi odr\u016fdami. dTest otestoval celkem deset druh\u016f su\u0161en\u00fdch hub, p\u011bt druh\u016f tvo\u0159ily lesn\u00ed houby typick\u00e9 pro oblast \u010ceska a dal\u0161\u00edch p\u011bt p\u0159edstavovaly houby pou\u017e\u00edvan\u00e9 v asijsk\u00e9 kuchyni. Pro zaj\u00edmavost byly do testu p\u0159id\u00e1ny t\u0159i vzorky podom\u00e1cku usu\u0161en\u00fdch hub z Lu\u017eick\u00fdch hor, Po\u0161umav\u00ed a Liberecka. \u201eZji\u0161\u0165ovali jsme, zda jsou houby dostate\u010dn\u011b vysu\u0161en\u00e9 a neukr\u00fdvaj\u00ed pl\u00edsn\u011b \u010di jejich jedovat\u00e9 produkty \u2013 mykotoxiny. D\u00e1le n\u00e1s zaj\u00edmalo, nakolik se v houb\u00e1ch objevuj\u00ed zdrav\u00ed \u0161kodliv\u00e9 t\u011b\u017ek\u00e9 kovy. U hub nab\u00edzen\u00fdch komer\u010dn\u011b jsme se p\u00eddili po pesticidech \u010di oxidu si\u0159i\u010dit\u00e9m, kter\u00fdm se n\u011bkdy houby o\u0161et\u0159uj\u00ed proti tmavnut\u00ed,\u201c<\/em> up\u0159es\u0148uje pr\u016fb\u011bh testu Hana Hoffmannov\u00e1, \u0161\u00e9fredaktorka \u010dasopisu dTest.<\/p>\n

Su\u0161en\u00ed je obl\u00edben\u00fd zp\u016fsob konzervace hub. V pr\u016fb\u011bhu su\u0161ic\u00edho procesu se z nich odpa\u0159\u00ed 80 a\u017e 90\u2009% vody, o stejn\u00fd pod\u00edl se sn\u00ed\u017e\u00ed i jejich hmotnost. Balen\u00fdm su\u0161en\u00fdm houb\u00e1m, kter\u00e9 lze zakoupit v obchod\u011b, vyhl\u00e1\u0161ka p\u0159edepisuje maxim\u00e1ln\u00ed 12% vlhkost. Z pohledu vlhkosti nem\u011bly testovan\u00e9 houby probl\u00e9m, by\u0165 dvoje Jid\u00e1\u0161ova ucha (Golden Turtle Brand Black Fungus a Holoubek & pravnuci \u010cern\u00e1 houba) se do limitu ve\u0161la jen t\u011bsn\u011b.<\/p>\n

P\u0159\u00edtomnost pl\u00edsn\u00ed se vyhodnocovala podle po\u010dtu nalezen\u00fdch koloni\u00ed tvo\u0159\u00edc\u00edch jednotek. \u010c\u00edm v\u00edce jejich bylo, t\u00edm ni\u017e\u0161\u00ed dostaly v\u00fdrobky zn\u00e1mku. \u201eNejl\u00e9pe si vedly houby Holoubek & pravnuci H\u0159ib smrkov\u00fd, kde jsme v jednom gramu objevili \u0159\u00e1dov\u011b jen des\u00edtky t\u011bchto koloni\u00ed. Uspokojiv\u00e9 zn\u00e1mky si odnesly houby Metro Chef Lesn\u00ed sm\u011bs z Makra a Holoubek & pravnuci \u010cern\u00e1 houba,\u201c<\/em> \u0159\u00edk\u00e1 Hana Hoffmannov\u00e1 a dod\u00e1v\u00e1: \u201eTato \u010d\u00e1st testu obecn\u011b dopadla dob\u0159e, neobjevili jsme \u017e\u00e1dn\u00e9 toxinogenn\u00ed pl\u00edsn\u011b, kter\u00e9 maj\u00ed schopnost vytv\u00e1\u0159et jedovat\u00e9 l\u00e1tky, a ani mykotoxiny, kter\u00e9 v potravin\u00e1ch p\u0159etrv\u00e1vaj\u00ed i pot\u00e9, co je samotn\u00e1 pl\u00edse\u0148 zni\u010dena.\u201c<\/em><\/p>\n

Zaj\u00edmav\u011bj\u0161\u00ed zji\u0161t\u011bn\u00ed p\u0159inesla \u010d\u00e1st testu v\u011bnovan\u00e1 p\u0159\u00edtomnosti t\u011b\u017ek\u00fdch kov\u016f. Prov\u011b\u0159ovala se p\u0159\u00edtomnost arzenu, kadmia, olova, rtuti, m\u011bdi a chromu. Nam\u011b\u0159en\u00e9 hodnoty se pak posuzovaly podle dnes ji\u017e neplatn\u00e9 vyhl\u00e1\u0161ky \u010d. 298\/1997 Sb., kter\u00e1 stanovovala limity pro jednotliv\u00e9 t\u011b\u017ek\u00e9 kovy v houb\u00e1ch. Dnes ji\u017e limity plat\u00ed pouze pro vybran\u00e9 druhy \u010derstv\u011b p\u011bstovan\u00fdch hub a t\u00fdkaj\u00ed se jen olova a kadmia. Dobrou zn\u00e1mku v testu z\u00edskaly pouze dva produkty. V\u00edce ne\u017e polovina testovan\u00fdch produkt\u016f neusp\u011bla zejm\u00e9na proto, \u017ee se alespo\u0148 jeden ze sledovan\u00fdch prvk\u016f bl\u00ed\u017eil p\u0159\u00edpustn\u00e9mu limitu v r\u00e1mci vyhl\u00e1\u0161ky. T\u00e9to \u010d\u00e1sti testu byly podrobeny i podom\u00e1cku usu\u0161en\u00e9 houby. A v\u00fdsledek? Probl\u00e9m \u010dinil zejm\u00e9na obsah kadmia. Vzorek z Lu\u017eick\u00fdch hor p\u0159esahoval n\u011bkdej\u0161\u00ed vyhl\u00e1\u0161kov\u00fd limit t\u00e9m\u011b\u0159 o 100 % a vzorky z Po\u0161umav\u00ed a Liberecka byly na \u00be limitu.<\/p>\n

Pokud \u0161lo o p\u0159\u00edtomnost pesticid\u016f, zde byla situace slo\u017eit\u011bj\u0161\u00ed. Pro jednotliv\u00e9 pesticidn\u00ed l\u00e1tky existuj\u00ed z\u00e1konn\u00e9 limity, ty se ale vztahuj\u00ed na ovoce a zeleninu. \u201eU hub je maxim\u00e1ln\u00ed povolen\u00e9 mno\u017estv\u00ed pesticid\u016f stanoveno jen pro \u010derstv\u00e9 houby. Zji\u0161t\u011bn\u00e9 hodnoty jsme proto p\u0159epo\u010d\u00edt\u00e1vali a zohled\u0148ovali, zdali se jednalo o houby lesn\u00ed nebo p\u011bstovan\u00e9,\u201c<\/em> up\u0159es\u0148uje Hana Hoffmannov\u00e1. T\u00e9m\u011b\u0159 ve v\u0161ech vzorc\u00edch bylo nalezeno zbytkov\u00e9 mno\u017estv\u00ed pesticid\u016f. V\u00fdjimkou byly shiitake zna\u010dky Holoubek & pravnuci, kter\u00e9 neobsahovaly \u017e\u00e1dn\u00e9 z prov\u011b\u0159ovan\u00fdch l\u00e1tek. Naopak u produktu Makro\/Metro Chef Lesn\u00ed sm\u011bs bylo nam\u011b\u0159eno mno\u017estv\u00ed p\u0159esahuj\u00edc\u00ed maxim\u00e1ln\u00ed limit i po zohledn\u011bn\u00ed nejistoty m\u011b\u0159en\u00ed.<\/p>\n

Z\u00e1v\u011br laboratorn\u00edho testu pat\u0159il ov\u011b\u0159en\u00ed p\u0159\u00edtomnosti oxidu si\u0159i\u010dit\u00e9ho, alergenu, kter\u00fd se mus\u00ed v\u00fdrazn\u011b uv\u00e1d\u011bt na obalech potravin. Jde z\u00e1rove\u0148 o antioxidant, kter\u00fdm se o\u0161et\u0159uj\u00ed potraviny, aby se zabr\u00e1nilo jejich tmavnut\u00ed a \u0161\u00ed\u0159en\u00ed mikroorganism\u016f. Mezi testovan\u00fdmi houbami byly dvoje (\u010cesk\u00e9 houby Asijsk\u00e1 sm\u011bs a Diamond Shiitake), kter\u00e9 ve slo\u017een\u00ed oxid si\u0159i\u010dit\u00fd zmi\u0148ovaly. Anal\u00fdzy v\u0161ak v su\u0161en\u00fdch houb\u00e1ch jeho p\u0159\u00edtomnost neprok\u00e1zaly.<\/p>\n

P\u0159ehled testovan\u00fdch su\u0161en\u00fdch hub najdete na webu https:\/\/www.dtest.cz\/susene-houby<\/strong><\/a>. Kompletn\u00ed v\u00fdsledky testu p\u0159ineslo z\u00e1\u0159ijov\u00e9 vyd\u00e1n\u00ed \u010dasopisu dTest.<\/p>\n

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

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  P\u0159esto\u017ee <\/p>\n","protected":false},"author":2,"featured_media":203356,"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\/09\/17\/r\u00e1me\u010dek-dtest.jpg","_links":{"self":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/203345"}],"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=203345"}],"version-history":[{"count":2,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/203345\/revisions"}],"predecessor-version":[{"id":203357,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/203345\/revisions\/203357"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/media\/203356"}],"wp:attachment":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=203345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=203345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=203345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}