“…Pyrolysis is one of the most economical and promising technologies to convert solid biomass into liquid (bio-oil), gas, and solid (Gao et al, 2016). Bio-oil is referred by various terms for the liquid products presented in the literature including wood liquor (Oramahi et al, 2018), pyroligneous acid (Pimenta et al, 2018), pyrolysis distillate (Barbero-López et al, 2019), liquid smoke (Wagiman, Ardiansyah and Witjaksono, 2014;Lombok et al, 2014;Maryam, 2015;Budaraga, Marlida and Bulanin, 2016;Hadanu and Apituley, 2016;Tarawan et al, 2017;Kailaku et al, 2017;Abustam, Said and Yusuf, 2018;Aisyah et al, 2018;Sari, Samharinto and Langai, 2018;Ifa, Sabara, et al, 2018;Ifa, Yani, et al, 2018;Maulina and Silia, 2018;Qomariyah et al, 2019;Surboyo et al, 2019;Swastawati et al, 2019;Rakhmayeni, Yuniarti and Sukarno, 2020), bio-fuel oil, wood oil, wood refined, (Ozbay and Ayrilmis, 2017;Boer et al, 2020). The constituent material for liquid smoke is obtained from the thermal degradation reaction of cellulose, hemicellulose, and lignin (Beker et al, 2016;Hadanu and Apituley, 2016;Kailaku et al, 2017).…”