1. A method for the extraction and stabilization of phycocyanin obtained from at least one material containing it, characterized in that it comprises the step of infusing one or more materials in glycerin or in a water / glycerin mixture. 2. The method according to p. 1, characterized in that the ratio of "water / glycerin" is not more than 60 / 40.3. A method according to claim 1, characterized in that one or more materials used are in the form of a dry powder or in natural form. The method according to claim 1, characterized in that after the extracting step by infusion, one or more materials used are separated by filtration of a mixture of glycerol and phycocyanin, which leads to the production of a filtrate containing phycocyanin and retentate. A method according to claim 1, characterized in that said materials are selected from spirulina (Arthrospira platensis or Spirulina maxima) and / or AFA (Aphanizomenon Flos-Aquae) .6. A method according to claim 1, characterized in that the glycerin is heated to a temperature not exceeding 70 ° C and preferably less than 40 ° C. A method according to claim 4, characterized in that the filtering is carried out in the frontal direction. A method according to claim 4, characterized in that the filtration is carried out through a filter acceptable for food products, for example from polyamide and preferably from nylon, with a porosity of from 2 to 50 μm and preferably less than 25 μm. The method according to claim 1, characterized in that it further comprises introducing carbon dioxide into the obtained filtrate under pressure. Products obtained by the method according to any one of paragraphs. 1-9 and including extracts containing in the glycerol solution or water / glycerin mixtures phycocyanin and one or more nutrients contained in one or more materials used for extraction. 11. Products according to claim 10, packaged in the form1. Способ экстракции и стабилизации фикоцианина, получаемого исходя по меньшей мере из одного с