“Improved Extraction of Anthocyanins With Antibacterial Activity from Fresh Roselle (Hibiscus Sabdariffa L.) Calyces”. Dhaka University Journal of Biological Sciences 33, no. 2 (September 1, 2024): 139–147. Accessed June 30, 2026. https://banglajol.info/index.php/DUJBS/article/view/75841.