ANTHOCYANIN NUTRACEUTICAL COLOURING AGENT FOR FOODSTUFF, PHARMACEUTICAL AND COSMETIC USE

The invention relates to a process for obtaining an anthocyanin nutraceutical colouring agent for foodstuff, pharmaceutical and cosmetic use. The claimed process consists in processing the residue resulting from pressing berries with a humidity of 60...80%, by fractioning in a 1:6...1:8 ratio, in an automatic extractor, by extraction with 95% ethanol acidified with 0.5% acetic acid, at the environment temperature and a pressure of 6...9 bar by percolation and pressure shocks, for 3...4 hours , thereafter the residual material is washed twice with the same extracting agent, the fluid fractions being joined, subjected to a centrifugal separation, the clear extract being concentrated by vacuum distillation, at 45°C to result an anthocyanic extract with a level of 60...65% active substance, of viscous consistence and acidity of 4.6%. Invenţia se referă la un procedeu de obţinere a unui colorant nutraceutic antocianinic, pentru utilizări alimentare, farmaceutice şi cosmetice. Procedeul conform invenţiei constă din prelucrarea reziduului de la presarea fructelor bace, cu umiditate de 60 ...80%, prin fracţionare într-un raport de 1:6...1:8, într-un extractor automat, prin extracţie cu etanol de 95% acidulat cu 0,5% acid acetic, la temperatura mediului ambiant şi la presiune de 6...9 bari, prin percolare şi şocuri de presiune, timp de 3...4 h, după care materialul rezidual este spălat de două ori cu acelaşi extractant, fracţiile fluide se reunesc, se supun unei separări centrifugale, extractul limpede se concentrează prin distilare la vid, la maximum 45°C, rezultând un extract antocianinic cu un nivel de 60...65% substanţă activă, consistenţă vâscoasă şi aciditate de 4,6%.