{"id":79687,"date":"2013-05-16T15:45:26","date_gmt":"2013-05-16T13:45:26","guid":{"rendered":"https:\/\/www.bkwine.com\/?p=79687"},"modified":"2022-02-20T12:13:14","modified_gmt":"2022-02-20T11:13:14","slug":"jastsort-ger-mindre-svavel-i-vinet","status":"publish","type":"post","link":"https:\/\/www.bkwine.com\/sv\/nyheter\/jastsort-ger-mindre-svavel-i-vinet\/","title":{"rendered":"Ny j\u00e4stsort ger mindre svavel i vinet"},"content":{"rendered":"

Alla viner inneh\u00e5ller svavel, men vissa mindre \u00e4n andra<\/h2>\n

I stort sett alla viner inneh\u00e5ller svavel. Det beror inte bara p\u00e5 att de flesta vinmakare tills\u00e4tter svavel f\u00f6r att stabilisera vinet och g\u00f6ra det mer l\u00e5nglivat och h\u00e5llbart. Det beror ocks\u00e5 p\u00e5 att under j\u00e4sningen s\u00e5 produceras det svavel. J\u00e4sten som omvandlar socker till alkohol, koldioxid och diverse andra \u00e4mnen producerar svavel som en biprodukt av sin metabolism (\u00e4mnesoms\u00e4ttning). Svavel \u00e4r allts\u00e5 en \u201dnaturlig\u201d best\u00e5ndsdel i vinet.<\/p>\n

\"The
The wine cellar with stainless steel tanks, copyright BKWine Photography<\/figcaption><\/figure>\n

Det \u00e4r \u00e4nd\u00e5 en m\u00e5ls\u00e4ttning f\u00f6r m\u00e5nga vintillverkare att h\u00e5lla svavelhalten i vinet p\u00e5 en s\u00e5 l\u00e5g niv\u00e5 som m\u00f6jligt. Det beh\u00f6ver man inte vara en extremistisk naturvin-entusiast f\u00f6r att vilja.<\/p>\n

En ny j\u00e4stsort, som heter Lalvin ICV Okay (varf\u00f6r detta namn?) har lanserats, som kan bidra till att minimera svavlet i vinet. Tack vare en kartl\u00e4ggning av Saccharomyces cerevisiaes<\/i><\/a> genom har man lyckats hitta de gener som \u00e4r ansvariga f\u00f6r svavelproduktionen.<\/p>\n

Jessica Noble heter forskaren som gjort en stor del av arbetet som sedan vidareutvecklats i ett samarbete mellan l’Institut Coop\u00e9ratif du Vin (ICV), Lallemand (ett f\u00f6retag i branschen), skolan SupAgro i Montpellier och franska jordbruksforskningsinstitutet INRA.<\/p>\n

Lalvin ICV Okay producerar v\u00e4sentligt mindre svavel, enligt uppgift, men \u00e4ven mindre etanal (acetaldehyd, som binder svavel), vilket g\u00f6r att vinmakaren beh\u00f6ver tills\u00e4tta mindre svavel vid buteljeringen.<\/p>\n

L\u00e4s mer om detta j\u00e4stgenombrott p\u00e5 Vitisphere<\/a>.<\/p>\n

\"Fermenting
Fermenting grapes, copyright BKWine Photography<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Alla viner inneh\u00e5ller svavel, men vissa mindre \u00e4n andra I stort sett alla viner inneh\u00e5ller svavel. Det beror inte bara p\u00e5 att de flesta vinmakare tills\u00e4tter svavel f\u00f6r att stabilisera vinet och g\u00f6ra det mer l\u00e5nglivat och h\u00e5llbart. Det beror ocks\u00e5 p\u00e5 att under j\u00e4sningen s\u00e5 produceras det svavel. J\u00e4sten som omvandlar socker till alkohol, […]<\/p>\n","protected":false},"author":3,"featured_media":344166,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[126],"tags":[1251,1970,241,367,826,414,2131],"class_list":["post-79687","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nyheter","tag-forskning","tag-frankrike","tag-jast","tag-svavel","tag-vetenskap","tag-vinifikation","tag-vinskola"],"_links":{"self":[{"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/posts\/79687","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/comments?post=79687"}],"version-history":[{"count":0,"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/posts\/79687\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/media\/344166"}],"wp:attachment":[{"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/media?parent=79687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/categories?post=79687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bkwine.com\/sv\/wp-json\/wp\/v2\/tags?post=79687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}