STABILIZATION AND SOLUBILIZATION OF LIPOPHILIC NATURAL COLORANTS WITHCYCLODEXTRINS

The paper provides data on the practical utilization of the benefits o f the molecular encapsulation of natural colorants by cyclodextrins. E xperimental results on the stability of cyclodextrin complexed curcumi n, curcuma oleoresin, beta-carotene and carotenoid oleoresins against light-, heat- and oxygen prove the benefits of molecular encapsulation of colorants. The parent beta-cyclodextrin stabilized most effectivel y the curcumines, while the stability of carotenoids was most effectiv ely achieved by alpha-cyclodextrin complexation. Methylated beta-cyclo dextrin was found to be the most potent solubilizing agent for both ca rotenoids and curcuminoids.