Kurang, R., & Kamengon, R.
(2021).
Phytochemical Test and Antioxidant Activity of Methanol Extract in Arabica Coffee Leaves by Using DPPH Method (1,1-Diphenyl-2-Picrylhydrazyl).
Walisongo Journal of Chemistry, 4(2), 113-118.
doi:
https://doi.org/10.21580/wjc.v4i2.8032