We would like to inform you that Volume 5, Issue 2 (2025), and all earlier issues of the Journal of Biobased Chemicals (JOBC) remain accessible through our previous system at: https://e1.jobc.jurnal.unej.ac.id.

Due to technical issues caused by a recent hacker attack, we have implemented a new and more secure system to ensure the safety and continuity of future publications. Therefore, starting from Volume 6, Issue 1 (2026) onward, all issues will be published exclusively on our new platform at: https://jobc.journal.unej.ac.id.