Preservatives are substances or chemicals added to drugs, food, beverages, paints, cosmetics, and wood, in order to prevent microbial growth and undesirable changes in terms of both, physical and chemical properties. Preservatives are of two kinds, namely natural and synthetic, both of which are used to enhance the quality of the end product. Natural preservatives such as antioxidants, vitamin E, rosemary extracts, and seed extracts are readily available in nature and often obtained from ... Read more
