scholarly journals Hydrothermal Fabrication of Spindle-Shaped ZnO/Palygorskite Nanocomposites Using Nonionic Surfactant for Enhancement of Antibacterial Activity

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1453 ◽  
Author(s):  
Aiping Hui ◽  
Shuqing Dong ◽  
Yuru Kang ◽  
Yanmin Zhou ◽  
Aiqin Wang
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Low Cost ◽  
Ionic Surfactants ◽  
E Coli ◽  
Antibacterial Performance ◽  
Good Antibacterial Activity ◽  
Controllable Growth ◽  
And Staphylococcus Aureus

In order to improve the antibacterial performance of natural palygorskite, spindle-like ZnO/palygorskite (ZnO/PAL) nanocomposites with controllable growth of ZnO on the surface of PAL were prepared in the presence of non-ionic surfactants using an easy-to-operate hydrothermal method. The obtained ZnO/PAL nanocomposites have a novel and special spindle-shaped structure and good antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), and are also low cost. The minimum inhibitory concentrations of ZnO/PAL nanocomposites toward E. coli and S. aureus reached 1.5 and 5 mg/mL, respectively.

Synthesis of Chalcones and Nucleosides Incorporating [1, 3, 4]Oxadiazolenone Core and Evaluation of their Antifungal and Antibacterial Activities

2020 ◽  
Vol 15 (6) ◽  
pp. 665-679
Author(s):  
Alok K. Srivastava ◽  
Lokesh K. Pandey
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Bacillus Subtilis ◽  
Antifungal Activity ◽  
Aspergillus Niger ◽  
Gram Negative ◽  
E Coli ◽  
Gram Positive Bacteria ◽  
Good Antibacterial Activity

Background: [1, 3, 4]oxadiazolenone core containing chalcones and nucleosides were synthesized by Claisen-Schmidt condensation of a variety of benzaldehyde derivatives, obtained from oxidation of substituted 5-(3/6 substituted-4-Methylphenyl)-1, 3, 4-oxadiazole-2(3H)-one and various substituted acetophenone. The resultant chalcones were coupled with penta-O-acetylglucopyranose followed by deacetylation to get [1, 3, 4] oxadiazolenone core containing chalcones and nucleosides. Various analytical techniques viz IR, NMR, LC-MS and elemental analysis were used to confirm the structure of the synthesised compounds.The compounds were targeted against Bacillus subtilis, Staphylococcus aureus and Escherichia coli for antibacterial activity and Aspergillus flavus, Aspergillus niger and Fusarium oxysporum for antifungal activity. Methods: A mixture of Acid hydrazides (3.0 mmol) and N, Nʹ- carbonyl diimidazole (3.3 mmol) in 15 mL of dioxane was refluxed to afford substituted [1, 3, 4]-oxadiazole-2(3H)-one. The resulted [1, 3, 4]- oxadiazole-2(3H)-one (1.42 mmol) was oxidized with Chromyl chloride (1.5 mL) in 20 mL of carbon tetra chloride and condensed with acetophenones (1.42 mmol) to get chalcones 4. The equimolar ratio of obtained chalcones 4 and β -D-1,2,3,4,6- penta-O-acetylglucopyranose in presence of iodine was refluxed to get nucleosides 5. The [1, 3, 4] oxadiazolenone core containing chalcones 4 and nucleosides 5 were tested to determined minimum inhibitory concentration (MIC) value with the experimental procedure of Benson using disc-diffusion method. All compounds were tested at concentration of 5 mg/mL, 2.5 mg/mL, 1.25 mg/mL, 0.62 mg/mL, 0.31 mg/mL and 0.15 mg/mL for antifungal activity against three strains of pathogenic fungi Aspergillus flavus (A. flavus), Aspergillus niger (A. niger) and Fusarium oxysporum (F. oxysporum) and for antibacterial activity against Gram-negative bacterium: Escherichia coli (E. coli), and two Gram-positive bacteria: Staphylococcus aureus (S. aureus) and Bacillus subtilis(B. subtilis). Result: The chalcones 4 and nucleosides 5 were screened for antibacterial activity against E. coli, S. aureus and B. subtilis whereas antifungal activity against A. flavus, A. niger and F. oxysporum. Compounds 4a-t showed good antibacterial activity whereas compounds 5a-t containing glucose moiety showed better activity against fungi. The glucose moiety of compounds 5 helps to enter into the cell wall of fungi and control the cell growth. Conclusion: Chalcones 4 and nucleosides 5 incorporating [1, 3, 4] oxadiazolenone core were synthesized and characterized by various spectral techniques and elemental analysis. These compounds were evaluated for their antifungal activity against three fungi; viz. A. flavus, A. niger and F. oxysporum. In addition to this, synthesized compounds were evaluated for their antibacterial activity against gram negative bacteria E. Coli and gram positive bacteria S. aureus, B. subtilis. Compounds 4a-t showed good antibacterial activity whereas 5a-t showed better activity against fungi.

Preparation and Antibacterial Effect of Nanopalygorskite Supported Nano-Silver Powder

2014 ◽  
Vol 1052 ◽  
pp. 327-331 ◽  
Author(s):  
Jian Rong Wang ◽  
Ya Li Liu ◽  
Bin Liu ◽  
Yan Ping Wu
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Room Temperature ◽  
Antibacterial Effect ◽  
Silver Powder ◽  
Nano Silver ◽  
Good Antibacterial Activity ◽  
Novel Method ◽  
And Staphylococcus Aureus

A novel method was used to make palygorskite supported nano-silver powder at room temperature. XRD result showed the presence of silver in the final product. TEM investigation revealed that nano-sliver particles of 6-10 nm in diameter were successfully attached on surface of palygorskite fiber. FTIR was also used to clarify the formation mechanism of our method. The antibacterial effect of palygorskite supported nano-silver powder was investigated. Palygorskite supported nano-silver powder had good antibacterial activity on standard Escherichia coli and Staphylococcus aureus.

scholarly journals Uji Daya Hambat Ekstrak Metanol Beberapa Jenis Porifera Terhadap Bakteri Escherichia coli dan Staphylococcus aureus

Jurnal MIPA ◽  
2014 ◽  
Vol 3 (2) ◽  
pp. 129
Author(s):  
Megawati S. Saroinsong ◽  
Febby E. F. Kandou ◽  
Adelfia Papu ◽  
Marina F. O. Singkoh
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Methanol Extract ◽  
Inhibition Zone ◽  
E Coli ◽  
Activity Test ◽  
And Staphylococcus Aureus ◽  
Paper Disc ◽  
Coli Growth

Penelitian ini bertujuan untuk menguji daya hambat dari ekstrak metanol beberapa jenis porifera terhadap pertumbuhan bakteri E. coli dan S. aureus. Pengujian aktivitas antibakteri menggunakan metode Kirby-Bauer, yaitu dilakukan dengan mengukur zona hambat di sekeliling cakram kertas. Ekstrak Haliclona sp dapat menghambat pertumbuhan S. aureus pada konsentrasi ekstrak 30%, 60% dan 90% dengan hasil pengukuran diameter zona hambat 13.50 mm, 20.67 mm dan 27.33 mm; serta menghambat pertumbuhan E. coli dengan diameter zona hambat 10.08 mm, 12.83 mm dan 14.17 mm. Daya hambat ekstrak Agelas sp terhadap S. aureus menunjukkan diameter zona hambat 8.33 mm dan hanya menunjukkan pada konsentrasi ekstrak 90%, sementara daya hambat ekstrak Agelas sp pada konsentrasi 30%, 60% dan 90% terhadap E. coli menunjukkan diameter zona hambat sebesar 7.67 mm, 10.17 mm dan 14.17 mm. Daya hambat Spheciospongia sp terhadap S. aureus dan E. coli hanya terlihat pada konsentrasi ekstrak sebesar 90% dengan diameter zona hambat adalah 8.42 mm dan 8.75 mm. Berdasarkan hasil yang diperoleh, dapat disimpulkan bahwa ekstrak Haliclona sp memiliki potensi aktivitas antibakteri yang dapat digunakan sebagai bahan dasar pembuatan obat antibiotik.This research aimed to test the inhibition capabilities of methanol extract from several kinds of Porifera on Escherichia coli and Staphylococcus aureus growth. The antibacterial activity test using the Kirby-Bauer method, which delivered by measuring the inhibition zone around paper disc. The extract of Haliclona sp can inhibit the S. aureus growth at 30%, 60% and 90% of extracts concentration with the measurement of inhibition zone diameters are 13.50 mm, 20.67 mm and 27.33 mm; also inhibit the E. coli growth with inhibition zone diameters are 10.08 mm, 12.83 mm and 14.17 mm. The inhibition capability of Agelas sp extract on S. aureus shows that the inhibition zone diameters is 8.83 mm and only appear at 90% of extracts concentration, meanwhile the inhibition capability of Agelas sp extract at concentration 30%, 60% and 90% on E. coli shows diameters of inhibition zone are 7.67 mm, 10.17 mm and 14.17 mm. The inhibition capability of Spheciospongia sp on S. aureus and E. coli only occurred at 90% of extracts concentration with inhibition zone diameters 8.42 mm and 8.75 mm. Based on the results, it can be assumed that extracts of Haliclona sp has a potential antibacterial activity that can be used as a basic ingredients for antibiotic medicine.

scholarly journals The Antibacterial Activity Of Several Sponges From The Waters Of Tasik Ria Against Escherichia coli And Staphylococcus aureus bacteria

2018 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Abrianto A. O. Rompis ◽  
Fitje Losung ◽  
Deiske A. Sumilat ◽  
Agung B. Windarto ◽  
Stenly Wullur ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Natural Compounds ◽  
E Coli ◽  
Escherichia Coli Bacteria ◽  
And Staphylococcus Aureus ◽  
Positive Results ◽  
Sponge Extract

The sponge is one of the sea organisms that has a prospect as a source of natural compounds including peptides, steroids, asetogenin, terpenoids, alkaloids, cyclic halide and nitrogen. This research was directed to obtain several species of sponges from the waters of Tasik Ria as well as testing the antibacterial activity of extracts from some of the sponge against the bacteria Escherichia coli and Staphylococcus aureus. From the identification, seven species of sponges were found, which consists of: Amphimedon sp., Axinosa sp., Aaptos sp., Theonella sp., Cribochalina sp., Hyrtios sp., and Lendenfeldia sp. The tests of antibacterial activity of the extracts from these sponges against test bacteria E. coli and S. aureus showed some positive results. Extract from Axinosa sp. sponge(16 mm) showed the strongest antibacterial activity on Escherichia coli bacteria. Followed by Hyrtios sp. extract (13.5 mm), Aaptos sp. extract (13 mm), Lendenfeldia sp. extract (13 mm) and Cribochalinai sp. extract(10.5 mm). While the the tests on Staphylococcus aureus bacteria showed that the strongest antibacterial activity was found from Axinosa sp. sponge extract (16.5 mm), followed by the extract from Aaptos sp. (15 mm), Lendenfeldia sp. extract (14.5 mm), Hyrtios sp. extract(13.5 mm) and Cribochalina sp. extract (11 mm).Keywords: Sponge, antibacterial, Escherichia coli, Staphylococcus aureus ABSTRAK Spons merupakan salah satu biota laut yang sangat prospektif sebagai sumber senyawa bahan-bahan alami antara lain peptide, terpenoid, steroid, asetogenin, alkaloid, halide siklik dan senyawa nitrogen. Penelitian ini diarahkan untuk mendapatkan beberapa spesies spons dari perairan Tasik Ria serta menguji aktivitas antibakteri dari beberapa ekstrak spons terhadap bakteri Escherichia coli dan bakteri Staphylococcus aureus. Hasil identifikasi spons ditemukan sebanyak tujuh spesies yang terdiri dari: Amphimedon sp., Axinosa sp., Aaptos sp., Theonella sp., Hyrtios sp., Cribochalina sp. dan Lendenfeldia sp.. Aktivitas antibakteri dari beberapa ekstrak spons terhadap bakteri uji E. coli dan S. aureus terdapat diameter zona hambat bervariasi yaitu bakteri Escherichia coli menunjukkan aktivitas antibakteri ekstrak spons terkuat pada spons Axinosa sp (16 mm), disusul ekstrak spons Hyrtios sp. (13,5 mm), ekstrak spons Aaptos sp. (13 mm), ekstrak spons Lendenfeldia sp. (13 mm) dan ekstrak spons Cribochalinai sp. (10,5 mm).  Sedangkan pada bakteri Staphylococcus aureus menunjukkan aktivitas antibakteri ekstrak spons terkuat yaitu:  ekstrak spons Axinosa sp. (16,5 mm), disusul ekstrak spons Aaptos sp. (15 mm), ekstrak spons Lendenfeldia sp. (14,5 mm), ekstrak spons Hyrtios sp. (13,5 mm) dan ekstrak spons Cribochalina sp.(11mm).Kata Kunci : Spons, Antibakteri, Escherichia coli, Staphylococcus aureus

scholarly journals Binuclear Rhodium(II) Complexes With Selective Antibacterial Activity

1997 ◽  
Vol 4 (2) ◽  
pp. 81-88 ◽  
Author(s):  
Małgorzata Bień ◽  
Tadeusz M. Lachowicz ◽  
Agnieszka Rybka ◽  
Florian P. Pruchnik ◽  
Lilianna Trynda
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Nmr Spectroscopy ◽  
Antibacterial Agents ◽  
Structure And Properties ◽  
E Coli ◽  
Nitrogen Ligands ◽  
And Staphylococcus Aureus ◽  
Low Activity

Binuclear rhodium(II) complexes [Rh2Cl2(μ-OOCR)2(N-N)2] {R = H, Me; N-N = 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen)} and [Rh2(μ-OOCR)2(N-N)2(H2O)2](RCOO)2 (R = Me, Et;) have been synthesized and their structure and properties have been studied by electronic, IR and H1 NMR spectroscopy. Antibacterial activity of these complexes against Escherichia coli and Staphylococcus aureus has been investigated. The most active antibacterial agents against E. coli were [Rh2Cl2(μ-OOCR)2(N-N)2] and [Rh2(μ-OOCR)2(N-N)2(H2O)2](RCOO)2 {R = H and Me} which were considerably more active than the appropriate nitrogen ligands. The complexes show low activity against S. aureus. The activity of the complexes [Rh2(OOCR)2(N-N)2(H2O)2](OOCR)2 against E. coli decreases in the series: R=H≅CH3>C2H5>C3H7≅C4H9. The reverse order was found in the case of S. aureus.

scholarly journals Antibacterial Activity of Lemongrass (Cymbopogon nardus) Ethanolic Extract

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Waras Nurcholis ◽  
Mira Takene ◽  
Ratna Puspita ◽  
Lisnawati Tumanggor ◽  
Eka Nurul Qomariyah ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Antibiotic Resistance ◽  
Infectious Diseases ◽  
Ethanolic Extract ◽  
Leaf Extracts ◽  
E Coli ◽  
Cymbopogon Nardus ◽  
And Staphylococcus Aureus

Infectious diseases are a disease caused by bacteria such as Escherichia coli and Staphylococcus aureus. One way to overcome the disease by using antibiotics. However, wise use can lead to antibiotic resistance, so many bacteria are resistant to antibiotics. Therefore it is necessary to search the natural compounds as antibacterials, one of them by using lemongrass (Cymbopogon nardus). This study aims to determine the effectiveness of leaf extracts, stems, and roots lemongrass as antibacterial. The method used in this research is the disc method. Bacteria used are E. coli and S. aureus. The results show extracts of roots, stems, and leaf has activity against S. aureus, while  E. coli shows no activity as antibacterial, it can be possible because of the different properties of the bacteria.   Keywords: anti-bacteria, lemongrass, Escherichia coli, Staphylococcus aureus

scholarly journals Antibacterial activity of leaves, flowers, and fruits extract of Etlingera elatior from Nagan Raya District, Indonesia against Escherichia coli and Staphylococcus aureus

2021 ◽  
Vol 22 (10) ◽  
Author(s):  
ERNILASARI ERNILASARI ◽  
KAMALLIANSYAH WALIL ◽  
FITMAWATI FITMAWATI ◽  
DEWI INDRIYANI ROSLIM ◽  
ZUMAIDAR ZUMAIDAR ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Antibacterial Agents ◽  
Ethanol Extract ◽  
Fruit Extract ◽  
E Coli ◽  
Gas Chromatography Mass Spectroscopy ◽  
And Staphylococcus Aureus ◽  
Etlingera Elatior

Abstract. Ernilasari, Walil K, Fitmawati, Roslim DI, Zumaidar, Saudah, Rayhannisa. 2021. Antibacterial activity of leaves, flowers, and fruits extract of Etlingera elatior from Nagan Raya District, Indonesia against Escherichia coli and Staphylococcus aureus. Biodiversitas 22: 4457-4464. Etlingera elatior is a medicinal plant that has been used by people in Indonesia, especially Acehnese people. Based on its secondary metabolites, E. elatior can be used as antibacterial agents against Gram-positive and Gram-negative. However, to determine the antibacterial activity of E. elatior, the parts of E. elatior that have been used are leaves, flowers, and fruits. This study was aimed to determine the best concentration of ethanol extract of leaves, flowers, and fruits of E. elatior as an inhibitor against Escherichia coli and Staphylococcus aureus. The extract was made by the maceration method with 70% ethanol as a solvent. Antibacterial activity test was carried out by the diffusion agar method using concentrations of 0.5%, 1%, 1.5% and 2%. The results showed that the fruit extract of E. elatior has antibacterial activity with an effective inhibitory zone at a concentration of 2% is 8.4 mm (E. coli) and 2.4 mm (S. aureus). Meanwhile, antibacterial activity the extract of leaves and flowers against E. elatior cannot determine yet. Identification of leaves, flowers and fruits extract of E. elatior using GC-MS (gas chromatography-mass spectroscopy) showed 56 compounds were detected.

scholarly journals POTENSI ANTIBAKTERI BINTANG LAUT DARI PERAIRAN PANTAI KELURAHAN TONGKAINA MANADO

2019 ◽  
Vol 7 (3) ◽  
pp. 167
Author(s):  
Delpris Piter ◽  
Esther D Angkouw ◽  
Fitje Losung
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Streptococcus Agalactiae ◽  
Antibacterial Agents ◽  
Sea Water ◽  
Diffusion Method ◽  
E Coli ◽  
Linckia Laevigata ◽  
And Staphylococcus Aureus

Starfish is one of the species of the asteroidean class, and is grouped into phylum echinoderms. Echinoderms consist of approximately 6000 species and all live in sea water. Starfish is one source bioactive compounds. Active compounds from starfish have been known to have activities antioxidant, antibacterial, anti-inflammatory, antifungal and immunostimulatory, there are also blue starfish that are potential as antitumor and antibacterial agents. This study aims to obtain crude extracts from several types of starfish, and testing the antibacterial activity of crude starfish extracts against bacteria Streptococcus agalactiae, Escherichia coli and  Staphylococcus aureus. Test the antibacterial activity of crude starfish extracs Protoreaster nodosus, Achaster tipycus, dan Linckia laevigata against bacteria E. coli, S. aureus, dan S. agalactiae use the agar diffusion method by means of a well.  L. l extract  can inhibit bacteria e. coli at an extract concentration of 1000 mg/ml with a diameter of inhibitory zone 11.0 mm, whereas at a concentration of 750 mg/ml the test bacteria can still grow on the bacteria S. agalactiae and S. aureus can still grow even though the extract has be given  L. l Keywords: Potential Starfish, Antibacterial Activity, Staphylococcus aureus, Escherichia coli, and Streptococcus agalactiae Bintang laut merupakan salah satu spesies dari kelas Asteroidea, dan dikelompokkan kedalam filum Echinodermata. Filum Echinodermata  terdiri atas kurang lebih 6000 spesies dan semuanya hidup di air laut. Bintang laut  merupakan salah satu sumber penghasil senyawa bioaktif. Senyawa aktif dari bintang laut telah diketahui memiliki aktivitas antioksidan, antibakteri, antiinflamasi, antifungi dan imunostimulator, ada juga bintang laut biru yang potensial sebagai antitumor dan agen antibakteri. Penelitian ini bertujuan untuk mendapatkan ekstrak kasar dari beberapa jenis bintang laut, dan menguji aktivitas antibakteri ekstrak kasar bintang laut terhadap bakteri Streptococcus agalactiae, Escherichia coli dan  Staphylococcus aureus. Uji aktivitas antibakteri dari ekstrak kasar bintang laut Protoreaster nodosus, Achaster tipycus, dan Linckia laevigata terhadap bakteri E. coli, S. aureus, dan S. agalactiae mengggunakan metode difusi agar dengan cara sumur. Ekstrak L. l mampu menghambat bakteri E.coli pada konsentrasi ekstrak 1.000 mg/ml dengan diameter zona hambat 11.0 mm, sedangkan pada konsentrasi 750 mg/ml bakteri uji masih bisa bertumbuh pada bakteri S. agalactiae dan S. aureus masih dapat bertumbuh walaupun telah diberikan ekstrak L. l.Kata Kunci : Potensi Bintang Laut, Aktivitas Antibakteri, Streptococcus agalactiae, Escherichia coli and  Staphylococcus aureus

scholarly journals UJI AKTIVITAS ANTIBAKTERI JAMUR ENDOFIT PADA DAUN DAN BATANG TUMBUHAN KUMIS KUCING (Orthosiphon aristatus) TERHADAP BAKTERI Escherichia coli DAN staphylococcus aureus

PHARMACON ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 211
Author(s):  
Excel Pangouw ◽  
Jimmy Posangi ◽  
Widya Astuty Lolo ◽  
Robert Bara
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Endophytic Fungi ◽  
Antibacterial Effect ◽  
E Coli ◽  
Average Value ◽  
Escherichia Coli Bacteria ◽  
Cat’S Whiskers ◽  
And Staphylococcus Aureus

ABSTRACTEndophytic fungi are fungi that live in plant tissues and do not harm the plants. Endophytic fungi can produce compounds that have the potential to be antibacterial. This study aims to examine the antibacterial activity of endophytic fungi isolated from the leaves and stems of the cat's whiskers plant (Orthosiphon aristatus) against Escherichia coli and Staphylococcus aureus bacteria. Cat's whiskers contain essential oils which are used as antibacterial against some pathogenic bacteria such as Staphylococcus aureus and Escherichia coli. The method used is experimentally in the laboratory to test the antibacterial activity of endophytic fungi isolates derived from cat's whiskers (Orthosiphon aristatus) on Escherichia coli and Staphylococcus aureus bacteria using the hole / well method. In the research results obtained four samples of endophytic fungi extract isolated from the leaves and stems of the cat's whiskers plant (Orthosiphon aristatus) . The results of antibacterial research showed that endophytic mushroom extract isolated from cat's whiskers were more effective in inhibiting Escherichia coli bacteria compared to Staphylococcus aureus. In Escherichia coli bacteria the average value of inhibition is 5 mm whereas in Staphylococcus aureus bacteria the average value of inhibition is only 2 mm. So it can be seen that the endophytic fungus from the leaves of cat's whiskers has a better antibacterial effect than the endophytic fungus from the stems of the cat's whiskets. Conclusion, etidophytic fungi isolated from leaves and stems of cat's whiskers (Orthosiphon aristatus) have an antibacterial effect on the growth of E. coli bacteria and are not effective against S. aureus bacteria.Keywords: Cat's whiskers (Orthasiphan aristatus), antibacterial activity, Escherichia coli and Staphylococcus aureus. ABSTRAKJamur endofit ialah jamur yang hidup di dalam jaringan tumbuhan dan tidak membahayakan tumbuhan tersebut. Jamur endofit dapat menghasilkan senyawa yang berpotensi sebagai antibakteri. Penelitian ini bertujuan untuk menguji aktivitas antibakteri jamur endofit yang diisolasi dari daun dan batang tumbuhan kumis kucing (Orthosiphon aristatus) terhadap Bakteri Escherichia coli dan Staphylococcus aureus. Kumis kucing mengandung minyak atsiri yang digunakan sebagai antibakteri terhadap beberapa bakteri patogen seperti Staphylococcus aureus dan Escherichia coli. Metode yang dipakai yakni secara eksperimen di laboratorium untuk menguji adanya aktivitas antibakteri dari isolat jamur endofit  yang diberasal dari tumbuhan kumis kucing (Orthosiphon aristatus)  pada bakteri  Escherichia coli dan Staphylococcus aureus dengan menggunakan metode lubang/sumuran. Pada hasil penelitan didapatkan empat sampel ekstrak jamur endofit yang diisolasi dari daun dan batang  tumbuhan kumis kucing (Orthosiphon aristatus). Hasil penelitian antibakteri menunjukkan bahwa ekstrak jamur endofit yang diisolasi dari tumbuhan kumis kucing lebih efektif menghambat  bakteri Escherichia coli dibandingkan dengan bakteri Staphylococcus aureus. Pada bakteri  Escherichia coli nilai rata-rata daya hambat yaitu 5 mm sedangkan pada bakteri Staphylococcus aureus nilai rata-rata daya hambat yaitu hanya 2 mm. Sehingga dapat diketahui bahwa jamur endofit dari daun kumis kucing memiliki efek antibakteri yang lebih baik dibandingkan dengan jamur endofit dari batang kumis kucing. Kesimpulan, Jamur endofit yang diisolasi dari daun  dan batang kumis kucing (Orthosiphon aristatus) memiliki efek antibakteri terhadap pertumbuhan bakteri E. coli dan tidak efektiv terhadap bakteri S. aureus.Kata Kunci:  Tumbuhan kumis kucing (Orthosiphon aristatus), aktivitas antibakteri, Escherichia coli dan Staphylococcu saureus.

scholarly journals Aktivitas antibakteri dari ekstrak getah mangrove Excoecaria agallocha pada pelarut kloroform terhadap Escherichia coli dan Staphylococcus aureus

2017 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Dian Puspitasari
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Chloroform Extract ◽  
Root Bark ◽  
E Coli ◽  
Plant Parts ◽  
Excoecaria Agallocha ◽  
Fish Poison ◽  
And Staphylococcus Aureus

Ekstrak mangrove dari jenis Excoecaria agallocha telah diketahui memiliki berbagai manfaat, seperti yang berasal dari daun, akar, kulit batang dan tidak terkecuali pada getah. Getah ini telah dimanfaatkan untuk meracuni ikan, dan dapat membutakan mata apabila getah masuk kedalam mata walaupun sifatnya sementara. Penelitian ini dilakukan untuk menganalisa adanya aktivitas antibakteri ekstrak getah mangrove E. agallocha menggunakan pelarut kloroform terhadap bakteri Escherichia coli dan Staphylococcus aureus. Tahapan dalam penelitian ini meliputi ekstraksi dan uji aktivitas antibakteri. Penelitian ini menggunakan lima perlakuan meliputi kontrol dan ekstrak kloroform dengan konsentrasi 1 µg/disk, 5 µg/disk, 10 µg/disk dan 50 µg/disk. Hasil penelitian menunjukkan bahwa ekstrak getah mangrove E. agallocha menggunakan pelarut kloroform dapat menghambat pertumbuhan bakteri E. coli dan S. aureus dengan diameter zona hambat yang dihasilkan sebesar                  (9,67 ± 0,32) mm terhadap E. coli dan (11,07± 0,25) mm terhadap S.aureus.The extract of various plant parts of the mangrove Excoecaria agallocha has been proved as a potential source, for example the extract of leaves, root, bark and also sap. The sap is used for fish poison and temporary blindness if it gets into the eyes. This research for analyse antibacterial activity of extract sap of mangrove E. agallocha with kloroform solvent againts Escherichia coli and Staphylococcus aureus. This research include extraction and antibacterial activity test. This experiment use one control and four different concentration of chloroform extract (1 µg/disc, 5 µg/disc, 10 µg/disc dan 50µg/disc). The result showed that the sap extract of mangrove E. agallocha with chloroform solvent has antibacterial activity to inhibit E. coli dan S. aureus growth with minimum inhibitory concentration (9,67 ± 0,32 ) mm to E. coli dan (11,07± 0,25) mm to S.aureus.

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