Effect of the Extraction Solvent Polarity and the Ratio of Feed and Solvent on the Phytochemical Content and Antioxidant Activity of Red Betel Leaves (Piper crocatum). Indonesian J. Agric. Res [Internet]. 2018 Mar. 31 [cited 2026 Feb. 4];1(1):71-7. Available from: https://idjpcr.usu.ac.id/InJAR/article/view/173