{"id":140293,"date":"2016-12-03T08:30:00","date_gmt":"2016-12-03T08:30:00","guid":{"rendered":"https:\/\/bm.dev.synology.me\/?p=140293"},"modified":"2016-12-03T08:30:00","modified_gmt":"2016-12-03T08:30:00","slug":"alimentul-care-rezista-mii-de-ani-fara-sa-se-strice-cercetatorii-au-descifrat-secretul-2","status":"publish","type":"post","link":"https:\/\/bm.dev.synology.me\/?p=140293","title":{"rendered":"Alimentul care rezist\u0103 mii de ani f\u0103r\u0103 s\u0103 se strice. Cercet\u0103torii au descifrat secretul"},"content":{"rendered":"<p>\nArheologii din vremurile noastre au descoperit numeroase lucruri surprinz\u0103toare \u00een mormintele egiptene. Printre bijuteriile \u015fi celelate comori ascunse \u00een aceste locuri misterioase se num\u0103r\u0103 \u015fi vase con\u0163in\u00e2nd miere ce dateaz\u0103 de acum c\u00e2teva mii de ani \u015fi care continu\u0103 s\u0103 fie bun\u0103 de m\u00e2ncat \u00een ciuda trecerii timpului.<\/p>\n<p>\nExist\u0103 alte c\u00e2teva alimente care se p\u0103streaz\u0103 bune, \u00een stare crud\u0103, pentru o perioad\u0103 lung\u0103 de timp: sarea, zah\u0103rul \u015fi orezul uscat sunt c\u00e2teva dintre ele. Totu\u015fi, miere este special\u0103: ea rezist\u0103 trecerii timpului \u015fi se men\u0163ine \u00eentr-o stare complet comestibil\u0103; poate c\u0103 nu am dori s\u0103 gust\u0103m orez crud sau s\u0103 m\u00e2nc\u0103m sare, \u00eens\u0103 putem s\u0103 desfacem o urn\u0103 cu miere de acum c\u00e2teva mii de ani \u015fi s\u0103 ne bucur\u0103m de ea, f\u0103r\u0103 a o preg\u0103ti \u00een vreun mod special, ca \u015fi cum ar fi veche de o zi. Mai mult, longevitatea mierii \u00eei confer\u0103 \u015fi alte propriet\u0103\u0163i (cum ar fi cele medicinale) pe care alte alimente cu o durat\u0103 lung\u0103 de via\u0163\u0103 nu o au. Acest lucru ne face s\u0103 ne \u00eentreb\u0103m &#8211; ce anume face mierea s\u0103 fie un aliment at\u00e2t de special?<\/p>\n<p>\nR\u0103spunsul este unul aproape la fel de complex ca aroma mierii: este vorba de mai mul\u0163i factori ce lucreaz\u0103 \u00eentr-o armonie perfect\u0103 pentru a ob\u0163ine acest efect.<\/p>\n<p>\nPrimul motiv se datoreaz\u0103 compozi\u0163iei chimice a mierii. Mierea este, \u00een primul r\u00e2nd, un zah\u0103r. Zaharurile sunt higroscopice, termen ce \u00eenseamn\u0103 c\u0103 \u00een starea lor natural\u0103 con\u0163in foarte pu\u0163in\u0103 ap\u0103, dar c\u0103 o pot absorbi cu u\u015furin\u0163\u0103 din atmosfer\u0103 dac\u0103 nu sunt acoperite. \u201eMierea, \u00een forma ei natural\u0103, con\u0163ine foarte pu\u0163in\u0103 umiditate. \u00centr-un astfel de mediu foarte pu\u0163ine bacterii sau microorganisme pot supravie\u0163ui, astfel c\u0103 mor\u201d, explic\u0103 Amina Harris, director executiv \u00een cadrul&nbsp;<em>Honey and Pollination Center<\/em>&nbsp;de la Institutul Robert Mondavi al Universit\u0103\u0163ii California. Explica\u0163ia lui Harris dezv\u0103luie un element important al longevit\u0103\u0163ii mierii: pentru ca mierea s\u0103 se strice, este nevoie s\u0103 fie ceva \u00een interiorul s\u0103u care s\u0103 se strice. \u00centr-un astfel de mediu nepl\u0103cut, organismele nu pot supravie\u0163ui suficient de mult \u00een miere pentru a avea oportunitate de a \u201estrica\u201d acest aliment.<\/p>\n<p>\nDe asemenea, mierea este extrem de acid\u0103. \u201eAre un pH ce se g\u0103se\u015fte undeva \u00eentre 3 \u015fi 4,5, aproximativ, iar acest acid va ucide aproape orice dore\u015fte s\u0103 creasc\u0103 \u00een miere\u201d, mai spune Harris. Astfel, bacteriile \u015fi alte organisme care scurteaz\u0103 durata de via\u0163\u0103 a alimentelor sunt nevoite s\u0103 caute o alt\u0103 gazd\u0103, c\u0103ci speran\u0163a de via\u0163\u0103 \u00een miere este foarte sc\u0103zut\u0103.<\/p>\n<p>\nTotu\u015fi, mierea nu este singurul aliment higroscopic. Melasa, spre exemplu, un reziduu ce provine din&nbsp;extragerea zah\u0103rului din sfecl\u0103, este extrem de higroscopic\u0103 \u015fi totodat\u0103 este acid\u0103 (\u00eens\u0103 mai pu\u0163in ca mierea, av\u00e2nd un pH de 5,5). Totu\u015fi, de\u015fi rezist\u0103 mult, melasa se stric\u0103 \u00een cele din urm\u0103.<\/p>\n<p>\n<a href=\"http:\/\/www.descopera.ro\/dnews\/11269864-de-ce-rezista-mierea-cateva-mii-de-ani-fara-sa-se-strice-cercetatorii-au-descifrat-secretul\">Cititi mai multe pe www.descopera.ro<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Arheologii din vremurile noastre au descoperit numeroase lucruri surprinz\u0103toare \u00een mormintele egiptene. Printre bijuteriile \u015fi celelate comori ascunse \u00een aceste locuri misterioase se num\u0103r\u0103 \u015fi vase con\u0163in\u00e2nd miere ce dateaz\u0103 de acum c\u00e2teva mii de ani \u015fi care continu\u0103 s\u0103 fie bun\u0103 de m\u00e2ncat \u00een ciuda trecerii timpului. Exist\u0103 alte c\u00e2teva alimente care se p\u0103streaz\u0103 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[510],"tags":[426,16273,9637,20273,80,4888,19154,19707,32958,14122],"class_list":["post-140293","post","type-post","status-publish","format-standard","hentry","category-actualitate","tag-alimente","tag-cercetatori","tag-continut","tag-miere","tag-refuz","tag-secret","tag-stare","tag-timp","tag-trecere","tag-zahar"],"_links":{"self":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/140293","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=140293"}],"version-history":[{"count":0,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/140293\/revisions"}],"wp:attachment":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=140293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=140293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=140293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}