Comparative Study on the Isolation and Analysis of Caffeine from Diverse Sources. International Journal of Engineering Research and Science & Technology, [S. l.], v. 22, n. 1(S), p. 257–265, 2026. DOI: 10.62643/ijerst.2026.v22.i1(S).2056. Disponível em: https://ijerst.org/index.php/ijerst/article/view/2056. Acesso em: 25 oct. 2026.