“Optimization of the extraction process of anthocyanins and polyphenols from Hibiscus rosa-sinensis L. flowers”. (2023) Ciencia y Tecnología de Alimentos, 33(3), pp. 1–11. Available at: https://revcitecal.iiia.edu.cu/revista/index.php/RCTA/article/view/690 (Accessed: 5 August 2025).