Uji aktivitas antimikroba ekstrak etanol buah renggak (Amomum dealbatum Roxb.) terhadap Staphylococcus aureus dan Candida albicans

Abstract

Staphylococcus aureus and Candida albicans are microorganisms that cause infection in humans and have developed resistance to several classes of antibiotics and antifungals. Plants in the genus Amomum have been used in traditional medicine and have scientific potential as alternatives to natural antibacterial and antifungal agents. Renggak (Amomum dealbatum Roxb.) is a species of the genus Amomum that is commonly found in Lombok. Scientific research related to the antibacterial and antifungal activity of the fruit is still limited. The aim of this study was to determine the antibacterial and antifungal activity of ethanol extract of renggak fruit against Staphylococcus aureus and Candida albicans. The extraction method used sonication with 96% ethanol. Testing of antibacterial and antifungal activity by disc diffusion method. The positive control used chloramphenicol for antibacterial testing and ketoconazole for antifungal testing, while the negative control used 10% DMSO solution. The antibacterial and antifungal activity of the extract was measured based on the diameter of the inhibition zone formed around the disc. Data analysis used the Kruskall-Wallis statistical test with a 95% confidence level. The results showed that the ethanol extract had moderate activity against S. aureus at concentrations of 20% w/v & 30%w/v with inhibitory diameters ranging from 5-7 mm, while at concentrations of 40% w/v & 50% w/v. has strong activity with inhibitory diameters ranging from 10-15 mm. The ethanol extract showed no activity at concentrations of 50%, 75%, and 100% in inhibiting the growth of the fungus C. albicans. Statistical test of each extract concentration had a significant effect on the inhibition of growth of S. aureus compared to the negative control. Based on the description above, it can be concluded that the extract of renggak fruit has the potential to inhibit the growth of S. aureus.