Nurfarida, Umiyuliatul, Martina Kurnia Rohmah, and Yani Ambari. 2026. “Antioxidant Activity of Green and Purple Kale Leaves (Brassica Oleracea L.) Ethanol Extract”. JFIOnline | Print ISSN 1412-1107 | E-ISSN 2355-696X 18 (1):19-29. https://jfi-online.org/index.php/jfi/article/view/480.