Ridara, Rina, Muhammad Muhammad, Adi Setiawan, Shafira Riskina, and Siti Nurjannah. 2023. “Characterization of Bioethanol from Tuber of Porang Waste Fermented With Saccharomyces Cerevisiae Enzyme: Effect of Fermentation Time and Yeast Ratio”. Jurnal Teknik Kimia Dan Lingkungan 7 (2):48-57. https://doi.org/10.33795/jtkl.v7i2.3199.