“…In general, robusta coffee originating from West Lampung contains various phytochemical compounds such as caffeine, flavonoid, alkaloid, tannin, and saponin in line with study conducted by (Wigati et al 2019) where extract from robusta coffee beans cultivated in Bandung, Bogor, and Garut, West Java contained alkaloids, flavonoids, saponins, and tannins, the same as Robusta coffee grown in Central Java (Temanggung, Boyolali, Wonosobo) and East Java (Jombang, Malang, and Kediri) (Utami et al 2018). Furthermore, the results of the phytochemical characteristic test showed that the robusta coffee seed extract obtained from Malang, East Java contains flavonoids, alkaloids, terpenoids, tannins, and saponins (Nada et al 2021). The crude methanolic extracts of…”