Molecules, Vol. 28, Pages 3243: Characterization of Delonix regia Flowers & rsquo; Pigment and Polysaccharides: Evaluating Their Antibacterial, Anticancer, and Antioxidant Activities and Their Application as a Natural Colorant and Sweetener in Beverages

Molecules, Vol. 28, Pages 3243: Characterization of Delonix regia Flowers’ Pigment and Polysaccharides: Evaluating Their Antibacterial, Anticancer, and Antioxidant Activities and Their Application as a Natural Colorant and Sweetener in Beverages Molecules doi: 10.3390/molecules28073243 Authors: Doaa Ebada Hefnawy T. Hefnawy Ayman Gomaa Amira M. Alghamdi Asmaa Ali Alharbi Mohammed S. Almuhayawi Mohanned Talal Alharbi Ahmed Awad Soad K. Al Jaouni Samy Selim Gehad S. Eldeeb Mohammad Namir In the present study, an attempt was made to investigate the in vitro antioxidant, anticancer, and antibacterial activities of Delonix regia, then in vivo evaluate its safety as a natural colorant and sweetener in beverages compared to synthetic colorant and sweetener in rats, then serve the beverages for sensory evaluation. Delonix regia flowers had high protein, polysaccharide, Ca, Na, Mg, K, and Fe contents. The Delonix regia pigment extract (DRPE) polysaccharides were separated and purified by gel permeation chromatography on Sephacryl S-200, characterized by rich polysaccharides (13.6 g/L). The HPLC sugar profile detected the monosaccharides in the extracted polysaccharides, composed of mannose, galactose, glucose, arabinose, and gluconic acid, and the structure of saccharides was confirmed by FTIR, which showed three active groups: carbonyl, hydrocarbon, and hydroxyl. On the other hand, the red pigment constituents of DRPE were detected by HPLC; the...
Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research