Uji Aktivitas Antibakteri Ekstrak Kloroform dan Ekstrak Etanol Biji Bidara Laut (Strychnos ligustrina Bl) Terhadap Staphylococcus aureus ATCC 25923 dan Salmonella thypi
Abstract
A research has been conducted on the antibacterial activity of Strychnos ligustrina seeds against Staphylococcus aureus ATCC 25923 in vitro. Strychnos ligustrina seeds extracted using two solvents, namely chloroform (chloroform extract) and 70% ethanol (ethanol extract) and analysis of the chemical content of the extract by thin layer chromatography and paper chromatography. The results of this study are expected to provide data activity of Strychnos ligustrina seeds as antibacterial scientifically. In this study, the chloroform extract and ethanol extract of Strychnos ligustrina seeds obtained by the filtration method with Soxhlet apparatus. Antibacterial activity test of chloroform extract and ethanol extract 70% from Strychnos ligustrina seeds performed using liquid dilution method, the parameters used are the MIC (minimum inhibitory concentration) and MKC (minimum killing concentration). MIC is determined by turbidity or clarity of the test solution, while MKC determined by scraping the respective concentrations of the extract / test solution on blood agar medium. The results showed that the chloroform extract and ethanol extract of Bidara Laut seed has antibacterial activity against Staphylococcus aureus ATCC 25923 and Salmonella thypi. MIC of each test extracts (chloroform and ethanol 70%) could not be determined because both of the test extract produce turbid color, while the MIC of the second test extract was 3.62% b/v for Salmonella thypi, 8.75% for Staphylococcus aureus ATCC 25923 (Strychnos ligustrina seeds chloroform extract), 22.5% for Salmonella thypi and 15% for Staphylococcus aureus ATCC 25923 (Strychnos ligustrina seeds ethanol extract). Results of thin layer chromatography and paper chromatography showed that the chloroform extract seeds contain alkaloids and steroids / triterpenoids, whereas the 70% ethanol extract contains alkaloids, tannins and steroids/triterpenoids.
Keywords: antibacterial, chloroform extract, ethanol 70% extract, Strychnos ligustrina seeds, Salmonella thypi, Staphylococcus aureus
Copyright (c) 1970 Eti Sumiati
This work is licensed under a Creative Commons Attribution 4.0 International License.
COPYRIGHT AND LICENSE STATEMENT
COPYRIGHT
Biogenesis: Jurnal Ilmiah Biologi is published under the terms of the Creative Commons Attribution license. Authors hold the copyright and retain publishing rights without restriction to their work. Users may read, download, copy, distribute, and print the work in any medium, provided the original work is properly cited.
LICENSE TO PUBLISH
1. License
The use of the article will be governed by the Creative Commons Attribution license as currently displayed on http://creativecommons.org/licenses/by/4.0.
2. Author’s Warranties
The author warrants that the article is original, written by stated author/s, has not been published before, contains no unlawful statements, does not infringe the rights of others, is subject to copyright that is vested exclusively in the author and free of any third party rights, and that any necessary written permissions to quote from other sources have been obtained by the author(s).
3. User Rights
Under the Creative Commons Attribution license, the users are free to download, reuse, reprint, modify, distribute and/or copy the content for any purpose, even commercially, as long as the original authors and source are cited. No permission is required from the authors or the publishers.
4. Co-Authorship
If the article was prepared jointly with other authors, the corresponding author warrants that he/she has been authorized by all co-authors, and agrees to inform his/her co-authors of the terms of this statement.
5. Miscellaneous
Biogenesis: Jurnal Ilmiah Biologi may conform the article to a style of punctuation, spelling, capitalization, and usage that it deems appropriate. The author acknowledges that the article may be published so that it will be publicly accessible and such access will be free of charge for the readers.
