rcent higher), lower quantity of heat, softer taste, higher buffering factor and more lasting time; however, it is not so corrosive as citric acid that leads to series enamel wear, and it is harmless to mouth cavity and teeth. As a new generation of food acidity regulator, malic acid is known as best food acidity regulator in biological and nutritional fields. It is widely used in foods such as wines, beverages, fruit juices and chewing gums. It is not only the third food acidity regulator comin