A. Santoso, R. Rohmah, M.R. Asrori, S. Sumari, S. Sukarni
Sugarcane bagasse waste is an alternative resource to be a pyrolyzed liquid smoke (bio-oil) and has potential an antibacterial activity. This study presents a liquid smoke produced from sugarcane bagasse, determines the effect of active natural zeolite on the production of the liquid smoke, and determines the antibacterial activity of the liquid smoke. The liquid smoke was synthesized through pyrolysis of the sugarcane bagasse waste catalyzed by active natural zeolite (0, 1, 2 and 3 % w/w of the waste). The liquid smoke was identified for its physicochemical properties including density, refractive index, viscosity, and acid number and characterized by FTIR and GC-MS. The results showed that active natural zeolite contained Heulandite and clinoptilolite phases. The addition of active natural zeolite catalyst increased the yield. The optimum catalyst usage was 2 % w/w catalyst that resulted 47.05 % yield. The main compound contained in the liquid smoke was ethanoic acid. By antibacterial activity, the zone of inhibition produced in the antibacterial test of gram-positive S. aureus and gram-negative E. coli on liquid smoke without catalyst and with active natural zeolite were very strong. © 2025 Latin American Applied Research. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Universitas Negeri Malang, Malang, 65145, Indonesia; Universitas Negeri Malang, Malang, 65145, Indonesia
