GRANADOS-CHINCHILLA, F. Teaching food analysis through unknowns: Study case for methylxanthines, organic acids, and sugars examination over liquid chromatography. International Journal of Physics and Chemistry Education, [S. l.], v. 15, n. 2, p. 33–44, 2024. DOI: 10.51724/ijpce.v15i2.355. Disponível em: https://ijpce.org/index.php/IJPCE/article/view/355. Acesso em: 19 sep. 2024.