Anggriani, S. and Anggarani, M. 2022. Determination of Total Phenolic, Total Flavonoid and Antioxidant Activity of Batak Onion Extract (Allium chinense G. Don). Indonesian Journal of Chemical Science. 11, 3 (Nov. 2022), 207-221. DOI:https://doi.org/10.15294/ijcs.v11i3.54669.