authors Barros, Lillian Bouçada de Cardenosa, Vanessa Amaral, J.S. Choupina, Altino Branco Angel Prieto, Miguel Pereira, Eliana Andreia Pires Castilho Prieto, M.A. Inès Jabeur
keywords Cyanidin-3-O-sambubioside Delphinidin-3-O-sambubioside Heat-/ultrasound-assisted extraction Hibiscus sabdariffa L. calyces Natural colorants Process optimization