“The Effect of α-Amylase and Glucoamylase Enzyme Concentrations and Fermentation Time on the Characteristics of Bioethanol from Cempedak Seed Flour”. 2026. G-Tech: Jurnal Teknologi Terapan 10 (4): 1577-87. https://doi.org/10.70609/gtech.v10i4.11141.