Chemical Composition, Antioxidant, Antibacterial, Antibiofilm, and Cytotoxic Activities of Robusta Coffee Extract (Coffea canephora) oleh Erma Suryanti, Dwi Retnowati, Muhammad Eka Prastya, Novita Ariani, Indri Yati, Vera Permatasari, Tjandrawati Mozef, Indah D. Dewijanti, Apriza Yuswan, Muhammad Asril, Elisa Nurma Riana, Irmanida Batubara