Damarhati, L. A. ., Fajriansyah, M. R., Anyalirria, Putra, R. P. ., Liwanda, N., & Nurcholis, W. (2023). Optimization of Extraction Solvent for Analysis of Total Phenolic and Antioxidant Activity of Guava Leaves (Psidium guajava) using Simplex Centroid Design. Jurnal Jamu Indonesia, 8(3), 90–96. https://doi.org/10.29244/jji.v8i3.344