SINGAPORE - A brand of vinegar from China is allowed again for sale in Singapore after it was earlier recalled for containing an undeclared allergen.

       The Singapore Food Agency (SFA) had on Sept 18 ordered importer Goy Chiap Hin to recall the product after it was found to contain sulphur dioxide, an allergen that was not declared on its packaging label.

       The agency did further investigations after engaging with the importer, and found that the method used to test for sulphur dioxide had led to a false positive result, SFA said on Nov 5.

       It did not elaborate on the method used but said the test is internationally accredited for most food products. SFA has since reviewed and put in place a suitable testing method for sulphur dioxide in vinegar products.

       In recommended concentrations, sulphite may be used in the food and beverage industry because of its antioxidant and preservative properties. Sulphite is typically tested for as sulphur dioxide.

       It does not generally pose a health threat to consumers, except for those who are allergic to it.

       This group of people who are sensitive to sulphite can develop hives, itchiness, stomach ache, diarrhoea and vomiting if they consume excessive amounts of the food additive.

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