IKA PUTRI SULISTIANA; SUHARYONO; SUBEKI; MEDINA ALIA RAHMAWATI; SUCI PUTRI RAMADANI; PRATAMI, Tesy. Optimization of Fermentation Time and Ghalkoff Microbial Concentration on Organic Robusta Coffee. Jurnal Bio-Geo Material Dan Energi, [S. l.], v. 6, n. 2, p. 97–107, 2026. DOI: 10.22437/j-bigme.v6i2.54165. Disponível em: https://www.online-journal.unja.ac.id/bigme/article/view/54165. Acesso em: 20 apr. 2026.