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Food additives are substances added to food to preserve flavor or improve its taste and appearance. Some additives have been used for centuries; for example, preserving food by pickling (with vinegar), salting, as with bacon, or using sulfur dioxide as in some wines. Food additives can be divided into several groups, such as antioxidants, acids, sweeteners, flavors etc. To find more on food additives see the link on Wikipedia

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