• SUNARTI M. BIOMED Department of Biomedical, Faculty of Nursing and Midwifery, University of Prima Indonesia, Kota Medan, Sumatera Utara 20111, Indonesia.
  • DEBORA PANINSARI Department of Maternity, Faculty of Nursing and Midwifery, University of Prima Indonesia, Kota Medan, Sumatera Utara 20111, Indonesia.




Rhinacanthus nasutus, Escherichia coli, Inhibition zone


Objective: The objective of this study was to discover of the ethanolic extract of Rhinacanthus nasutus (L) Kurz in inhibiting Escherichia coli bacteria using an in vitro method.

Methods: This is an experimental study using a laboratory test with Kirby-Bauer or paper disc method by observing and measuring the inhibition zone of the ethanolic extract of R. nasutus against E. coli bacteria with extract concentrations of 15%, 30%, and 60% consisting of control groups and treatment group. The positive control group used chloramphenicol antibiotics and negative control groups used Aquadest. E. coli was incubated at 37°C for 24 h. Then, the plates were incubated for 24 h at 37°C and the diameter of the inhibition zone was observed until the 3rd day with three repetitions.

Results: The results of the study showed that the mean inhibition zone of E. coli bacteria was 10.93 mm, 12.09 mm, and 18.90 mm. The results of the Shapiro–Wilk test were p=0.199. The results of the one-way analysis of variance test were p<0.05 and that of the post hoc test indicated a significant value of p<0.05. Based on the results of the research, there were significant differences in the inhibition zone between the control group and the treatment group at a concentration of 15%, 30%, and 60%.

Conclusion: R. nasutus extract was effective to inhibit the growth of E. coli bacteria at concentrations of 15%, 30%, and 60%, so R. nasutus is effective as an antimicrobial.


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How to Cite

BIOMED, S. M., and DEBORA PANINSARI. “EFFECTS OF ETHANOLIC EXTRACT OF RHINACANTHUS NASUTUS (L) KURZ AS AN ANTIMICROBIAL AGAINST ESCHERICHIA COLI BACTERIA USING IN VITRO METHOD”. Asian Journal of Pharmaceutical and Clinical Research, vol. 12, no. 12, Dec. 2019, pp. 69-72, doi:10.22159/ajpcr.2019.v12i12.35523.



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