We know that Sulfur Dioxide is poisonouos gasses but why this substance can found in food. Is this good to eat? Sulfur dioxide is one of sulfite, a preservative whose name might be more familiar, that is why this substance can be available inside the food usually preservative food. A small amount of sulfite can wreak health havoc of you're sensitive to it. If we have asthma, sulfite sensitivity or sulfite allergy, eating dried fruits might cause serious health problems, including breathing problems. Dried fruits are among the food highest in sulfites, with raisins and prunes containing between 500 to 2000 ppm, compare to wine that may contain sulfites only 20 to 350 ppm. As the regulation of US Food and Drug Administration mandates that foods containing more than 10 ppm of sulfites must list this information on the food label. Each countries have different standard of sulfite contain in food, Australian government limits sulfite in food to 3000 ppm, while British government