Vitamin- og mineral guiden

Svovl (S, sulfur)

Svovl (S, sulfur)Svovl er livsvigtig for både planter og dyr. En voksen indeholder omkring 175 gram. Svovl findes blandt andet i aminosyrerne cystein og methionin, og dermed i alle de proteiner og enzymer, der indeholder disse aminosyrer. Svovl indgår i de enzymer, der er ansvarlige for, at de røde blodlegemers hæmoglobin kan binde ilt. Svovl indgår i disulfidbindinger, der styrker hud, hår og negle. Når fugleæg er rige på svovl, skyldes det, at svovlet skal bruges i den kommende fugls fjerdragt. Svovl kan binde tungmetaller og andre giftstoffer. Der er en kemisk lighed mellem svovl og selen, men svovl er ingen antioxidant og har andre funktioner i kroppen.

Funktioner og betydning for

Mangler og dårlig udnyttelse forårsages af

Mangelsymptomer

De er sjældne, men kan forårsage:

Kilder

Især bønner, løg, hvidløg, kål, lever, mager ost, peberrod, æg, fuldkorn, mandler, kød, fisk og andre mejeriprodukter. Desuden en række frugt og grønsager.

Lever, mager ost 250
Peberrod 220
Havregryn, rugkerner 200
Æg, hel hvede 190
Broccoli 130

Anbefalet daglig tilførsel

Ikke fastsat. Det antages, at vi får rigelig gennem kostens proteiner med svovlholdige aminosyrer (cystein og methionin)

Øget behov

Overdosering – bivirkninger

Ved indtagelse af for mange proteiner (fx kød, æg og mejeriprodukter) kan svovlindtaget overdoseres. Dette kan belaste nyrerne og medføre syreoverskud.

Vigtigt at vide

Svovl indgår i mange forbindelser – også i industrien som for eksempel svovlsyre (gødning, olieraffinering) og sulfitter (konserveringsmiddel).
Svovl har ligheder med selen og kan fortrænge dette sporstof.
Syreregn, der indeholder svovl, kan bevirke, at jordens selen omdannes til luftige gasarter.
Tilladte svovlforbindelser mod svampeangreb kan også fortrænge selen.

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