{"id":133529,"date":"2018-06-21T14:01:10","date_gmt":"2018-06-21T13:01:10","guid":{"rendered":"http:\/\/zakrasnejsivimperk.cz\/?p=133529"},"modified":"2018-06-21T14:01:10","modified_gmt":"2018-06-21T13:01:10","slug":"dtest-nalez-mikroplastu-v-morske-soli-a-morskych-plodech","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=133529","title":{"rendered":"dTEST: N\u00e1lez mikroplast\u016f v mo\u0159sk\u00e9 soli a mo\u0159sk\u00fdch plodech"},"content":{"rendered":"

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Mikroplastov\u00e9 \u010d\u00e1stice doprov\u00e1z\u00ed lidstvo pom\u011brn\u011b kr\u00e1tkou dobu a o jejich vlivu na zdrav\u00ed \u010dlov\u011bka se zat\u00edm p\u0159\u00edli\u0161 nev\u00ed. Nepoda\u0159ilo se tak doposud ani vyvr\u00e1tit mo\u017enost, \u017ee by mohly \u0161kodit. \u010casopis dTest otestoval spolu se zahrani\u010dn\u00edmi spot\u0159ebitelsk\u00fdmi organizacemi p\u0159\u00edtomnost mikroplast\u016f v potravin\u00e1ch mo\u0159sk\u00e9ho p\u016fvodu.<\/h6>\n

\"\"Do \u017eivotn\u00edho prost\u0159ed\u00ed se uvol\u0148uje velk\u00e9 mno\u017estv\u00ed drobn\u00fdch plastov\u00fdch \u010d\u00e1stic. Poch\u00e1zet mohou z kosmetiky, textilu, pneumatik nebo z rozpadaj\u00edc\u00edch se um\u011blohmotn\u00fdch p\u0159edm\u011bt\u016f. Tyto mikroplasty rozn\u00e1\u0161\u00ed v\u00edtr a odpadn\u00ed voda po cel\u00e9 planet\u011b. \u201eMo\u0159\u0161t\u00ed \u017eivo\u010dichov\u00e9 poz\u0159ou mikroplasty rozpt\u00fdlen\u00e9 ve vod\u011b a n\u011bkter\u00e9 v nich mohou z\u016fst\u00e1vat. V pokrmech z krevet a mu\u0161l\u00ed se \u010d\u00e1st mikroplast\u016f dost\u00e1v\u00e1 na n\u00e1\u0161 tal\u00ed\u0159 a pak do na\u0161ich za\u017e\u00edvac\u00edch trakt\u016f. To je d\u016fvod, pro\u010d jsme na p\u0159\u00edtomnost mikroplast\u016f otestovali potraviny mo\u0159sk\u00e9ho p\u016fvodu,\u201c<\/em> popisuje Hana Hoffmannov\u00e1, \u0161\u00e9fredaktorka \u010dasopisu dTest a dod\u00e1v\u00e1: \u201eZaj\u00edmalo n\u00e1s, do jak\u00e9 m\u00edry jsou um\u011blou hmotou kontaminov\u00e1ny potraviny, kter\u00e9 se prod\u00e1vaj\u00ed v Evrop\u011b.\u201c<\/em><\/p>\n

Podle v\u011bdeck\u00fdch hypot\u00e9z by mohly mikroplasty zvy\u0161ovat vst\u0159ebatelnost n\u011bkter\u00fdch chemik\u00e1li\u00ed do t\u011bla. Jejich povrch toti\u017e odpuzuje vodu a dok\u00e1\u017ee na sebe nav\u00e1zat \u0159adu chemik\u00e1li\u00ed, nap\u0159\u00edklad polychlorovan\u00e9 bifenyly (PCB) nebo polyaromatick\u00e9 uhlovod\u00edky (PAH). To by mohlo b\u00fdt z pohledu v\u011bdc\u016f zdrojem skute\u010dn\u00e9 jedovatosti mikroplast\u016f. Krom\u011b n\u00ed se v\u00fdzkumy zab\u00fdvaj\u00ed i ot\u00e1zkou mechanick\u00e9ho p\u016fsoben\u00ed plastov\u00fdch \u010d\u00e1stic v organizmu.<\/p>\n

Mezin\u00e1rodn\u00ed t\u00fdm, v n\u011bm\u017e byly krom\u011b \u010ceska zapojeny Francie, It\u00e1lie, D\u00e1nsko, \u0160pan\u011blsko, Belgie, Finsko a Rakousko, zaslal do specializovan\u00e9 laborato\u0159e vzorky mo\u0159sk\u00e9 soli, mu\u0161l\u00ed a krevet nakoupen\u00fdch v r\u016fzn\u00fdch evropsk\u00fdch st\u00e1tech se zad\u00e1n\u00edm zjistit, zda se v nich nach\u00e1zej\u00ed mikroplastov\u00e9 \u010d\u00e1stice.<\/p>\n

Anal\u00fdza prov\u011b\u0159ila 29 vzork\u016f kor\u00fd\u0161\u016f, 35 vzork\u016f mu\u0161l\u00ed a 39 vzork\u016f mo\u0159sk\u00e9 soli. Mikroplastov\u00fdmi \u010d\u00e1sticemi byly zat\u00ed\u017eeny zhruba dv\u011b t\u0159etiny testovan\u00fdch vzork\u016f v ka\u017ed\u00e9 z kategori\u00ed. \u201eNejv\u00edce mikroplastov\u00fdch \u010d\u00e1stic \u2013 v\u00edce ne\u017e 30 kus\u016f ve 100\u2009g \u2013 laborato\u0159 na\u0161la ve vzorc\u00edch mo\u0159sk\u00e9 soli fleur de sel, v p\u0159ekladu jde o soln\u00fd kv\u011bt. D\u016fvodem vy\u0161\u0161\u00edho zne\u010dist\u011bn\u00ed plastem by mohl b\u00fdt zp\u016fsob zpracov\u00e1n\u00ed, p\u0159i kter\u00e9m se mo\u0159sk\u00e1 voda pomalu odpa\u0159uje v m\u011blk\u00fdch p\u00e1nv\u00edch bl\u00edzko mo\u0159e,\u201c<\/em> konstatuje Hana Hoffmannov\u00e1 a dod\u00e1v\u00e1: \u201eTento druh soli b\u00fdv\u00e1 pova\u017eov\u00e1n za nejchutn\u011bj\u0161\u00ed a pat\u0159\u00ed k t\u011bm nejdra\u017e\u0161\u00edm. Mo\u0159skou s\u016fl ale nezatracujme \u00fapln\u011b. Pr\u016fmyslov\u011b vyr\u00e1b\u011bn\u00e1 s\u016fl obsahovala \u0161estkr\u00e1t m\u00e9n\u011b mikro\u010d\u00e1stic plastu ne\u017e fleur de sel.\u201c<\/em><\/p>\n

Dle odborn\u00fdch studi\u00ed dok\u00e1\u017eou \u010d\u00e1stice o velikosti do 10 \u00b5m prostoupit p\u0159es st\u0159evn\u00ed tk\u00e1\u0148 a\u017e do lymfatick\u00e9ho a imunitn\u00edho syst\u00e9mu. Nejvy\u0161\u0161\u00ed pod\u00edl mikroplastov\u00fdch \u010d\u00e1stic \u201epr\u016fchoz\u00ed\u201c velikosti odhalila laborato\u0159 v soli fleur de sel, a to 20 %. V mu\u0161l\u00edch a kor\u00fd\u0161\u00edch se jich vyskytovalo o pozn\u00e1n\u00ed m\u00e9n\u011b \u2013 okolo 5\u2009%. Pro lidsk\u00e9 zdrav\u00ed by mohly b\u00fdt rizikov\u011bj\u0161\u00ed mikroplasty vdechnut\u00e9 z ovzdu\u0161\u00ed. Zde se naopak ukazuje, \u017ee \u010d\u00edm v\u011bt\u0161\u00ed \u010d\u00e1stice, t\u00edm hor\u0161\u00ed dopad na pl\u00edce. Zat\u00edmco \u010d\u00e1ste\u010dky mal\u00e9 velikosti je mo\u017en\u00e9 vydechnout zp\u011bt, p\u0159\u00edpadn\u011b si s nimi porad\u00ed plicn\u00ed \u010distic\u00ed mechanismy, velk\u00e9 by v plic\u00edch mohly z\u016fst\u00e1vat.<\/p>\n

Co jsou mikroplasty? Typick\u00fdm p\u0159\u00edkladem jsou um\u011bl\u00e1 vl\u00e1kna, nap\u0159\u00edklad uvoln\u011bn\u00e1 z fleecov\u00e9ho oble\u010den\u00ed nebo plastov\u00fdch odpadk\u016f o velikosti od 100 nanometr\u016f do p\u016fl centimetru. Kompletn\u00ed v\u00fdsledky testu najdete na webu www.dtest.cz\/mikroplasty<\/strong>.<\/a><\/p>\n

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

Obr\u00e1zky z\u00a0mikroskopu zachycuj\u00ed mikroplastovou f\u00f3lii, granuli a vl\u00e1kno ve vzorc\u00edch mo\u0159sk\u00e9 soli a mu\u0161l\u00ed.<\/p>\n