Let’ s clear up some of the most common myths and misunderstandings about sulfites, wine, and headaches<\/b>
\nIf drinking red wine gives you a headache, you\u2019 ve probably had someone tell you that sulfites are the likely culprit. Perhaps you\u2019 ve been advised to stick to white wine, organic wines, or wines made in Europe on the grounds that these will be lower in sulfites.
Let\u2019s clear up some of the most common myths and misunderstandings about sulfites, wine, and headaches.
First, a little background: Sulphur dioxide (or SO2) is a chemical compound made up of sulfur and oxygen. It occurs naturally but can also be produced in a laboratory. It\u2019s used to preserve foods and beverages, which it does by acting as an antioxidant and antimicrobial.
Sulphur dioxide has been used in winemaking for thousands of years, ever since the ancient Romans discovered that it would keep their wine from turning into vinegar. To this day, winemakers use sulphur dioxide to preserve the flavor and freshness of wines.
By law, wines that contain more than 10 ppm (parts per million) sulfite must be labeled with the words \u201ccontains sulfites.\u201d There are also upper limits to how much sulfite a wine may contain but the regulations vary by region. In the European Union, wine may contain up to 210 ppm sulfites. In the U. S., the upper limit is 350 ppm.
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