Rafael, Fadhil Luthfi, et al. “The Effect of Rice Grain Malt Concentration During Hydrolysis of Rice on the Characteristics of Rice Sugar Syrup”. Jurnal Bio-Geo Material Dan Energi, vol. 5, no. 2, Sept. 2025, pp. 68-76, doi:10.22437/j-bigme.v5i2.43670.