Sulfur dioxide is a permitted preservative in certain processed foods, when declared on the ingredient label. It should not be present in fresh or frozen meats.
Most people can consume foods containing permitted levels of sulfur dioxide without ill effects. But individuals who are sensitive to this preservative may experience severe, possibly life-threatening allergic reactions upon consuming a food containing sulfur dioxide.
The CFS is conducting follow-up investigations, and sending warning letters to the sellers of the sulfur dioxide-contaminated beef and pork. In addition, CFS reminds Hong Kong consumers to only buy their meat from reputable vendors.