Penelitian berikutnya menunjukkan bahwa ekstrak etanol bunga rosella memiliki aktivitas antibakteri pada konsentrasi 5%, 10%, 20% dan 30% terhadap Streptococcus pyogenes,
Subsequent research showed that the ethanol extract of flowers of rosella has antibacterial activity at a concentration of 5%, 10%, 20% and 30% against s. pyogenes,
Subsequent research has shown that the ethanol extract of roselle flowers have antibacterial activity at concentrations of 5%, 10%, 20% and 30% of Streptococcus pyogenes,