“Optimization of the Extraction Process of Anthocyanins and Polyphenols from Hibiscus Rosa-Sinensis L. Flowers”. Ciencia y Tecnología de Alimentos 33, no. 3 (December 30, 2023): 1–11. Accessed August 5, 2025. https://revcitecal.iiia.edu.cu/revista/index.php/RCTA/article/view/690.