Manongko, Patricia Syaron, et al. “Antioxidant Activity Of Vco Emulsion Beverages With The Addition Of Purple Sweet Potato Extract”. Jurnal Agroekoteknologi Terapan (Applied Agroecotechnology Journal), vol. 5, no. 1, May 2024, pp. 99-113, doi:10.35791/jat.v5i1.55101.