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Glycerin (Glycerol, E422)
Glycerin is a substance belonging to the group of stabilizers, thickeners, emulsifiers. In the international classification of food additives, Glycerin is assigned the code E422.
General Characteristics and preparation of Glycerol
Glycerin looks like a clear liquid with a high viscosity. It has a slightly sweet taste, as evidenced by its name (from Greek. glycos – sweet). According to chemical characteristics, glycerin is the simplest triatomic alcohol, which was first obtained by Karl Scheele in 1779 by saponifying fats (calorizator). Almost all of the glycerin has since been obtained by saponifying oils and fats as a by-product. E422 mixes well with water and other liquids. Chemical formula HOCH2CH(OH)-CH2OH.
Purpose and use of Glycerin
E422 preserves and increases the degree of viscosity and consistency of products, so it is indispensable in cases where it is necessary to mix ingredients that are normally immiscible, that is, it acts as an emulsifier. It is widely used in the food industry for the production of alcoholic beverages and confectionery.
Glycerin is used in the production of electronic cigarettes, in tobacco production, in the paint and varnish industry. It is used as a means for preserving anatomical preparations.
Glycerin is also used in the production of explosives and mixtures, paper and antifreeze, and the production of leather goods.
In cosmetology, Glycerin is used as the main ingredient in the production of creams, emulsions and soaps, it is believed that it softens the skin, but now this is a controversial issue.
Benefits and harms of E422
Glycerin is a part of medicines that reduce intracranial pressure, it is used for intravenous injections in some operations. E422 can cause dehydration of the body, with uncontrolled intake, so categorical contraindications to the use of E422 are kidney diseases and problems with blood circulation. In other cases, E422 is not considered dangerous, provided that the rules and regulations for the use of a food additive are observed. Triglycerides are derivatives of glycerol and are formed when higher fatty acids are added to it. Triglycerides are important components in the metabolic process in living organisms.
Application of E422
Throughout our country, the food additive E422 Glycerin is allowed to be used in limited quantities.