Wan Suriyani Wan-Ibrahim^1,a,*, Nur Farah Dinah Johnny Foo^1,b, Siti Farhanah Mohd-Salleh^2,c

¹Faculty of Bioengineering and Technology, Universiti Malaysia Kelantan

²Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia

Abstract. Etlingera elatior, commonly known as bunga kantan, is a well-known traditional remedy and food enhancer in Malaysia. This study utilized methanol, hexane, and ethyl acetate as solvents, employing Ultrasonic Assisted Extraction (UAE) for the extraction process. The extraction yields were recorded as 9.56% for methanol, 9.55% for ethyl acetate, and 9.31% for hexane. The antioxidant activity of the extracts was assessed using the 2,2-diphenyl-1-picryhydrazyl (DPPH) free radical scavenging assay, with IC₅₀ values determined for each solvent. The IC₅₀ values for the antioxidant potential were 39.10 µg/mL in methanol, 37.03 µg/mL in hexane, and 25.00 µg/mL in ethyl acetate, indicating notable activity, particularly in the ethyl acetate extract. Phytochemical analysis identified the major components with the highest scores as oleic acid, caryophyllene, hexadecenoic acid, stigmasterol, and dodecanoic acid. These findings highlight the potential of Etlingera elatior as a source of bioactive compounds with antioxidant properties.