Total phenolic content and antioxidant activity of pure and formulated extracts of kesum (polygonum minus), bawang putih (allivium sativum), pegaga (centella asiatica), and ulam raja (cosmos caudatus). Mal. J. Fund. Appl. Sci. [Internet]. 2015 Dec. 30 [cited 2026 Oct. 6];11(4). Available from: https://mjfas.utm.my/index.php/mjfas/article/view/399