PROCESS FOR EXTRACTING NATURAL PRODUCTS A COLORANT FROM THE ANTHOCYANINE GROUP

摘要

The invention relates to a process for extracting, from a natural product, a dye of the group of the antiestrins. In an extractor 1, equipped with a heating pipe 2, OF A CONICAL METAL SIEVE 3 FOR SEPARATING THE EXTRACT FROM THE RAW MATERIAL, AND AN AGITATOR 4, THE COLOR-CONTAINING NATURAL PRODUCT IS CONTACTED WITH AQUEOUS SOLUTION COMPRISING SULFITE IONS AT A TEMPERATURE OF LESS 85C AND FOR A PERIOD OF NOT LATER THAN 30 MINUTES. AT THE BEGINNING OF THE CONTACT THE CONCENTRATION OF THE AQUEOUS SULFITE ION SOLUTION SHOULD BE AT LEAST 10000PPM, SO. / P P THE EXTRACT DYE CAN BE FOR COLORING FOOD PRODUCTS AND BEVERAGES. / P