Palmer Sivoko, Imbenzi, Masinde Lily Ateko, and Obuya Joel. “Antioxidant Activity by DPPH Assay of Crude Methanolic Extracts from Selected Indigenous Vegetables in Kenya”. International Journal of Professional Practice 11, no. 3 (July 13, 2023): 16–25. Accessed October 14, 2025. https://ijpp.kemu.ac.ke/index.php/ijpp/article/view/297.