FITRIYANO, Gema; HERFINDO, Rudi Septian; WATI, Erna Kurnia. Effect of Ethanol Concentration and Extraction Time on Piperine Yield from Piper retrofractum Vahl. Sainteks, [S. l.], v. 23, n. 1, p. 21–29, 2026. DOI: 10.30595/sainteks.v23i1.30337. Disponível em: http://jurnalnasional.ump.ac.id/index.php/SAINTEKS/article/view/30337. Acesso em: 4 jun. 2026.