Comparative Analysis of the Inhibitory Efficacy of 50% and 80% Concentrations of Rambutan Seed Extract (Nephelium lappaceum L.) on the Growth of Candida albicans

Introduction. Denture stomatitis is a prevalent issue among those who wear dentures, and it is caused by Candida albicans. Ketoconazole, an azole antifungal medication, is commonly employed to treat denture stomatitis. However, it is important to note that the usage of this agent might lead to hepatotoxicity and the development of resistance. The objective of the study was to assess the inhibitory efficacy of rambutan seed extract (Nephelium lappaecum L.) at concentrations of 50% and 80% on the proliferation of Candida albicans. Methods. This research employs a laboratory experiment using a design that includes a post-test only control group. The specimen is an uncontaminated culture isolation of Candida albicans. This study had four distinct groups: rambutan seed extract concentrations of 50% and 80%, a positive control group, and a negative control group. Each group was reproduced six times. Using digital calipers to measure the diameter of resistance. Upon completion of data collection, the acquired data was subsequently subjected to analysis utilizing one-way ANOVA and post hoc LSD statistical testing. Results. The research findings indicate that the average ± standard deviation inhibitory diameter of rambutan seed extract was 50%, 80%, and the positive control for the growth of Candida albicans was 8.68 ± 0.585; 12.38±0.505; 22.43 ± 0.809 mm, respectively. In contrast, the negative control (DMSO) did not exhibit any inhibitory effects. The one-way ANOVA test revealed a statistically significant difference in the mean inhibitory diameter of rambutan seed extract at concentrations of 50% and 80% on the growth of Candida albicans (p=0.000; p?0.05). The findings of the LSD post hoc test indicated a significant difference in inhibitory power between the 50% and 80% concentrations of rambutan seed extract, as well as between these concentrations and both the positive and negative controls. Additionally, there was a significant difference in the growth of Candida albicans between the 50% and 80% concentrations of rambutan seed extract (p?0.05). Conclusion. The research findings indicate that the extract derived from rambutan seeds effectively inhibits the development of Candida albicans. An 80% concentration is the optimal concentration for maximum effectiveness.