Red ginger extract has a category strong antibacterial effect on Staphylococcus
aureus and Streptococcus mutans. Red ginger essential oil has the potential for
stronger inhibition. This study aims to compare the antibacterial effectiveness of red
ginger essential oil against Staphylococcus aureus and Streptococcus mutans. The
design of this study was a laboratory experimental design with a factorial completely
randomized design. The red ginger used in this study was proven to be a species of
Zingiber officinale Roscoe. The production of essential oils in this study uses the
steam distillation method. The content of secondary metabolites in red ginger was
tested quantitatively by the GC-MS method. Determination of antibacterial activity
using the disc diffusion method. The data were processed using the SPSS 21.0
program. The normality of data distribution was tested with the Shapiro-Wilk test,
followed by one-way ANOVA, Levene's test, and the Tukey HSD Post Hoc Test. The
results of the antibacterial test of red ginger essential oil against Staphylococcus
aureus (21.21mm ± 0.315) and Streptoococcus mutans (23.43mm ± 0.189) prove d
that the inhibition power of the category was very strong at a concentration of 75%.