Mandatory requirements for food additives are established in the technical regulation of the Customs Union "Safety requirements for food additives, flavours and technological aids" (TR TS 029/2012). There is also a list of permitted food additives, in which types of products they can be used and in what concentration. A food additive is any substance (or a mixture of substances) that has or does not have its own nutritional value, is not usually consumed directly in food, and is intentionally used in the production of food products for the technological purpose to ensure manufacturing, transportation and storage processes, which leads or may lead to to the fact that the given substance or the products of its transformations become components of food products. A food additive can perform several technological functions: obtaining a taste or aroma; giving colour; formation of consistency; increase in storage time; preservation of certain qualities of the product. According to this classification, food additives are divided into several main groups: E100-199 - dyes - designed to give, enhance or restore the colour of food products; E200-299 - preservatives - designed to increase the shelf life of food products by protecting against the growth of microorganisms. E300-399 - antioxidants - designed to slow down the oxidation process and increase shelf life. E400-499 - stabilizers - designed to provide aggregative stability and maintain a uniform dispersion of immiscible ingredients. E500-599 - emulsifiers - designed to create and maintain a homogeneous mixture of immiscible phases in a food product. E600-699 - flavour enhancers (aroma) - designed to enhance the taste or modify the natural taste and aroma of products. E700-899 - spare numbers. E900 and beyond: defoamers, glazing agents, enzyme preparations, anti-caking agents (anti-caking agents), flour treatment agents, water-retaining agents, gelling agents, thickeners, acids, fillers, carriers, sweeteners, propellants, leavening agents, acidity regulators, stabilizers, packaging gases, sealants, fixatives (stabilizers) of colouring.