Indriani, D. W., F. D. Anggraini, Y. Hendrawan, and A. Lastriyanto. “Exploring the Impact of Temperature and Solvent Ratio on Phenol and Flavonoid Levels in Alpinia Galangal L. Extract Using Evaporative Vacuum Cooling”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), vol. 13, no. 4, Oct. 2024, pp. 1064-76, doi:10.23960/jtep-l.v13i4.1064-1076.