Ajeng Pawesti, A.S. et al. 2025. Antibacterial Activity Test of Methanol Extract of Gracilaria sp. against Escherichia coli Using Disc Diffusion Method: Uji Aktivitas Antibakteri Ekstrak Metanol Gracilaria sp. terhadap Escherichia coli Dengan Metode Difusi Cakram . BIO-EDU: Jurnal Pendidikan Biologi. 10, 3 (Dec. 2025), 225–236. DOI:https://doi.org/10.32938/jbe.v10i3.9389.