Available online at BIOMA: Jurnal Ilmiah Biologi Websites:http://journal.upgris.ac.id/index.php/bioma/index BIOMA: Jurnal Ilmiah Biologi, 11(2), October 2022, 179-189 Doi: https://doi.org/10.26877/bioma.v11i2.11708 179 | BIOMA: Jurnal Ilmiah Biologi, 11(2), October 2022 ANTIBACTERIAL ACTIVITY TEST OF SOLID SOAP WITH TORCH GINGER’S (Etlingera elatior (Jack) R.M.sm.) FLOWER EXTRACT Melia Sari 1 *, Mayang Sari 2 , Cut Nurul Aswi 1 . ,1 Department of Microbiology, Faculty of Pharmacy and Health, Institut Kesehatan Helvetia Jl. Kapten Sumarsono, Medan, North Sumatera, Indonesia, 20124 2 Department of Chemistry, Faculty of Pharmacy and Health, Institut Kesehatan Helvetia Jl. Kapten Sumarsono, Medan, North Sumatera, Indonesia, 20124 *Corresponding author: msmeliasari@gmail.com ARTICLE INFO ABSTRACT Article history Submission April 8 th , 2022 Revision July 4 th , 2022 Accepted August 18 th , 2022 Ethanol extract of torch ginger’s flower (Etlingera elatior) is rich in active compounds such as flavonoids, alkaloids, and saponins, steroids. Flavonoids are bioactive compounds that serve as antioxidants and antibacterials. This study aims to find the antibacterial activity of solid soap with torch ginger’s flower extract against S. aureus and P. aeruginosa. This study includes the preparation of simplicia, extracts, moisture content, total ash levels, insoluble acid ash levels, water soluble extract levels. The first evaluation includes organoleptic test, pH, irritation, and stability. The formulation of the tested soap preparations was 5%, 7.5%, 10%. The data analysis was performed with ANOVA. The results of this study revealed that its ethanolic extract had a moderate category of bacterial resistance against S. aureus where in FI (5%) has a clear zone with 7 mm in diameter, FII (7.5%) 8.3 mm and FIII (10%) 10.4 mm. Furthermore, for P. aeruginosa, it has a moderate clear zone with diameter in FI (5%) is 8.86 mm, FII (7.5%) is 9.73 mm, and FIII is 10.6 mm. Torch ginger’s flower ethanolic extract had an antibacterial activity against S. aureus and P. aeruginosa with the widest clear zone is in the FIII (10%, v/v) in the number of 10.4 mm against S. aureus and 10.6 mm against P. aeruginosa with moderate resistance category. Keywords: Etlingera elatior Staphylococcus aureus Pseudomonas aeruginosa INTRODUCTION Cosmetics are materials or preparations intended to be used on the external parts of the human body (hair, nails, lips, external genital organs) or the teeth and mucous membranes of the mouth, especially to clean, perfume, change appearance or improve body odor, protect or maintain the body in good condition (Permenkes, 2014). Our body plays a role in protecting the inside of the body from physical and mechanical distraction,