The use of additives in food is directly related to the changing lifestyles in North America. The majority of the population is now found in urban areas rather than in farming communities. The increasing number of families with working mothers has influenced the market for convenience foods. In addition, consumers now expect to have a year-round supply of seasonal foods. As a result of all these demands, foods are transported over longer distances, stored for longer periods of time, and undergo more processing.
Food additives play an important role in keeping foods fresh and appealing.
They also help in processing and preparation of food products. Although most additives have little or no nutritional value, vitamins and minerals are important nutrients frequently added to food products. Such substances are introduced into foods intentionally. Other additives find their way into foods indirectly, or accidentally. Intentional food additives are listed on food labels so that the consumer can decide whether they want to buy foods containing these substances.