scholarly journals Phytochemical screening and antibacterial activity of rosmarinus officinalis l. against Escherichia coli. local isolates

2015 ◽  
Vol 4 (4) ◽  
pp. 413
Author(s):  
Saima Johar ◽  
Shazia Irfan ◽  
Shehnaz Sher Ahmed ◽  
Rukhsana Jabeen
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Inhibition Zone ◽  
Reducing Sugar ◽  
Rosmarinus Officinalis ◽  
Aqueous Extracts ◽  
Phytochemical Screening ◽  
E Coli ◽  
Methanolic Extracts ◽  
Rosmarinus Officinalis L

<p>Rosmarinus officinalis is a medicinal plant which belongs to family Lamiaceae. It is an evergreen bush. It was analyzed for its phytochemical constitution and antibacterial activity. For this purpose flowers, leaves and stem of aqueous and methanolic extracts were used. The tests of phytochemical screening showed that flavonoids, terpenoids, reducing sugar and saponins were present in different concentrations, while tannin was absent in all parts of plant. The antibacterial activity was determined against E. coli with different concentrations (i-e 0.5gm, 1gm and 1.5gm) kept for 24 hours and 48 hours duration. The results showed that the highest mean inhibition zone was observed in the methanolic extracts of leaves 1.5gm kept for 48 hours (28.6 ± 4.261mm).In the stem the methanolic extracts showed the highest inhibition zone with the concentration of 1.5gm (13.4 ± 1.624mm) kept for 24 hours. In the flower the highest inhibition zone in methanolic extracts was observed in 1gm (25.4 ± 2.416mm) kept for 48 hours. In the aqueous extracts the highest inhibition zone values were (17.6 ± 4.029mm, 15.8 ± 2.993mm, 14.4 ± 2.33mm) for stem, flower and leaves respectively.</p>

scholarly journals Antibacterial activity of Escherichia coli from squid ink (Loligo sp.) n-Hexane extracts

2021 ◽  
Vol 869 (1) ◽  
pp. 012033
Author(s):  
D R Utami ◽  
I Irwan ◽  
S Agustina ◽  
S Karina ◽  
S Afriani
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Secondary Metabolite ◽  
Bioactive Compound ◽  
Inhibition Zone ◽  
Hexane Extract ◽  
Inhibition Zone Diameter ◽  
E Coli ◽  
Hexane Extracts ◽  
Intermediate Concentration

Abstract Squid is one of the export commodities in Indonesia. In general, the use of squid meat, while the ink is only as waste. In fact, Squid ink contain bioactive compound that potential as anti-inflammatory, antihypertensive, anti-diabetic,anti-microbial and anti-malaria agents. The purpose of the study is to determine the types of secondary metabolite compounds contained in n-hexane extract of Loligo sp. ink using maceration method to determine its antibacterial activity against Escherichia coli. The results of secondary metabolite compounds obtained from the n-hexane extract of Loligo sp. ink are alkaloid, saponins, glycosides and phenol. The results of antibacterial test against E. coli using the disc method obtained the average of inhibition zone diameter at the concentration of 4% is 6.3 mm (intermediate), concentration of 8% is 7.83 mm (intermediate), concentration of 16% is 14.5 mm (susceptible) and concentration of 32% is 10.83 mm (intermediate). The antibacterial activity in n-hexane extract of Loligo sp. ink is optimal at the concentration of 16% against E. coli bacteria.

scholarly journals UJI AKTIVITAS ANTIBAKTERI DAN ANTI-UV Phyllidiella nigra DAN BAKTERI SIMBIOTIKNYA DARI PERAIRAN TANJUNG MANDOLANG

2020 ◽  
Vol 8 (2) ◽  
pp. 61
Author(s):  
Tessalonica Dajoh ◽  
Robert A Bara ◽  
Esther Angkouw ◽  
Medy Ompi ◽  
Rosita A Lintang ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Secondary Metabolites ◽  
Bacillus Megaterium ◽  
Absorption Maximum ◽  
Chemical Compounds ◽  
Inhibition Zone ◽  
Defense System ◽  
E Coli ◽  
Self Defense

Phyllidiella nigra is an organism that is suspected to have secondary metabolites because their ability to develop its self defense system by camouflage and using chemical compounds derived from their nature diet as deterrent against their predators. The purpose of this study was to isolate symbiotic bacterial derived from P. nigra, extracted and followed by, the antibacterial assays against Escherichia coli and Bacillus megaterium as well as the anti-UV assay. The results showed that the five isolates tested had an antibacterial activity with the highest average inhibition zone against E. coli DSM 498 bacteria, isolate 1 (14.67 mm), isolate 5 (14 mm), and against B. Megaterium DSM 32T bacteria, isolate 3 (13.33 mm). The three isolates which had the highest inhibition zone and P. nigra extract were tested for anti-UV assay using a UV-Vis Spectrophotometer. The results obtained isolate 3 has absorption of UV-A with the UV absorbtion maximum at λ 340 nm and P. nigra extract has absorption on UV-B radiation with UV absorption maximum at λ 290 nm. Key words: Nudibranchia, Bacteria, Anti-bacteial, Anti-UV Phyllidiella nigra merupakan organisme yang diduga memiliki metabolit sekunder karena mampu mengembangkan sistem pertahanan dirinya dengan cara kamuflase dan menggunakan senyawa kimia sebagai racun yang didapat dari makanannya. Tujuan dari penelitian ini yaitu mendapatkan isolat bakteri yang bersimbiosis dengan P. nigra, mendapatkan ekstrak dari baktri simbion, dan menguji antibakteri dan anti-UV ekstrak etil aseta bakteri simbion dengan metode difusi agar terhadap bakteri Escherichia coli dan Bacillus megaterium. Hasil penelitian didapatkan kelima isolat yang diuji memiliki aktivitas antibakteri dengan rerata zona hambat tertinggi terhadap bakteri E. coli DSM 498 yaitu isolat 1 (14,67 mm), isolat 5 (14 mm), dan terhadap baktri B. megaterium DSM 32T yaitu isolat 3 (13,33 mm). Ketiga isolat yang memiliki zona hambat tertinggi dan ekstrak P. nigra diujikan anti-UV menggunakan alat UV-Vis Spektrofotometer. Hasil yang didapat isolat 3 memiliki serapan terhadap radiasi sinar UV-A dengan puncak tertinggi pada λ 340 nm dan ekstrak P. nigra memiliki serapan terhadap radiasi sinar UV-B dengan puncak tertinggi berada pada λ 290 nm. Kata kunci: Nudibranchia, Bacteria, Anti-bacteial, Anti-UV

scholarly journals Phytochemical analysis and antibacterial activity of Khaya senegalensis bark extracts on Bacillus subtilis, Escherichia coli and Proteus mirabilis

2016 ◽  
Vol 8 (3) ◽  
pp. 333 ◽  
Author(s):  
Abdullahi Aliyu ◽  
Alkali BR ◽  
Yahaya MS ◽  
Garba A ◽  
Adeleye SA ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Bacillus Subtilis ◽  
Proteus Mirabilis ◽  
Traditional Healers ◽  
Phytochemical Analysis ◽  
Aqueous Extracts ◽  
E Coli ◽  
Khaya Senegalensis ◽  
Ethanol Extracts

<p>The aqueous and ethanol extracts of the bark of<em> Khaya senegalensis</em> were screened for their phytochemical constituents and preliminary antibacterial activity against <em>Bacillus subtilis, Escherichia coli</em> and<em> Proteus mirabilis. </em>The minimum inhibitory concentration (MIC) of the plant on the tested organisms was determined using multiple tubes method.</p><p>Alkaloids, anthraquinones, glycosides, tannins and steroids were detected in both extracts.</p><p>The ethanol and aqueous extracts of the plant showed antibacterial activity against <em>B. subtilis and E. coli,</em> with the aqueous extracts having more activity than those of ethanol. However the growth of<em> P. mirabilis</em> was not inhibited by either of the extracts. The MIC value was determined to be 50 mg/ml for<em> B. subtilis </em>and<em> E. coli. </em>The results are suggestive of considerable antibacterial activity of<em> K. senegalensis </em>and may justify its use in the treatment of bacterial diseases by herbalists or traditional healers.</p>

scholarly journals ANTIBACTERIAL ACTIVITY OF CHITOSAN AND HYDROLYZED COCONUT OIL AND THEIR COMBINATION AGAINST BACILLUS CEREUS AND ESCHERICHIA COLI

2016 ◽  
Vol 9 (5) ◽  
pp. 69 ◽  
Author(s):  
Jansen Silalahi ◽  
Petrika Situmorang ◽  
Popi Patilaya ◽  
Yosy Ce Silalahi
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Bacillus Cereus ◽  
Coconut Oil ◽  
Inhibition Zone ◽  
Research Centre ◽  
Virgin Coconut Oil ◽  
Inhibition Zone Diameter ◽  
E Coli ◽  
Zone Diameter

ABSTRACTObjective: The purpose of this study was to evaluate the antibacterial activity of chitosan, hydrolyzed coconut oil and their combination againstBacillus cereus and Escherichia coli.Methods: The materials used in this study were powder of chitosan (obtained from prawn shell produced by Laboratory of Research Centre FMIPAUniversity of Sumatera Utara) and virgin coconut oil (VCO) product of Siti Nurbaya-Indonesia. VCO was partially hydrolyzed by Lipozyme TL IM(active at sn-1,3 position) and the result called hydrolyzed virgin coconut oil (HVCO). The bacteria used in this study were B. cereus and E. coli. Theantibacterial activity of chitosan in 1% acetic acid and HVCO in dimethylsulfoxide was tested by Kirby–Bauer agar diffusion method using paper discwith diameter of 6 mm.Results: The results showed that the minimum inhibitory concentration of chitosan against B. cereus and E. coli is at concentration of 0.05% withinhibition zone diameter of 6.86 mm and 7.56 mm, respectively. MIC of HVCO against B. cereus is at concentration of 0.25% with inhibition zonediameter of 6.40 mm, and against E. coli is at a concentration of 0.50% with inhibition zone diameter of 6.20 mm. The inhibition zone diameter ofchitosan 0.05% and HVCO 0.25% in combination against B. cereus is 8.33 mm which is higher than half the sum of chitosan 0.05% and HVCO 0.25%(6.63 mm). The inhibition zone diameter of chitosan 0.05% and 0.5% HVCO in combination against E. coli is 8.53 mm which is higher than half thesum of chitosan 0.05% and HVCO 0.5% (6.53 mm).Conclusion: The findings of this study indicate that chitosan is more antibacterial than HVCO, and the interaction between chitosan and HVCO incombination demonstrated to be synergistic against B. cereus and E. coli.Keywords: Antibacterial, Chitosan, Coconut oil, Combination, Bacillus cereus, Escherichia coli.®

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 Uji Efek Antibakteri Jamur Endofit Akar Bakau Rhizophora stylosa Terhadap Bakteri Staphylococcus aureus dan Escherichia coli

2014 ◽  
Vol 2 (1) ◽  
Author(s):  
Michele Sumampouw
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Endophytic Fungi ◽  
Pathogenic Bacteria ◽  
Antibacterial Effect ◽  
Inhibition Zone ◽  
Potato Dextrose Agar ◽  
Rhizophora Stylosa ◽  
E Coli

Abstract: The aim of this study is to investigate the antibacterial effect of endophytic fungi originated from the root of mangrove Rhizophora stylosa growing on Mangrove Plantation Area around DAS Simpang 5 Jl. Piere Tendean Manado. The method of this research was using combination of PDA and NA media. Two species of endophytic fungi were extracted from the root of R. stylosa, black mycelium fungi as isolate A and brown mycelium fungi as isolate B. The activities of both isolates were tested against pathogenic bacteria Staphylococcus aureus and Escherichia coli. The result showed the same inhibition zone of isolate A and B to S. aureus, while, isolate A showed bigger the inhibition zone in comparison to isolate B against E. coli. As a conclusion, the endophytic fungi taken from the root of R. stylosa have antibacterial activity toward S. aureus and E. coli. Keywords: endophytic fungi, Rhizophora stylosa, antibacterial, Staphylococcus aureus, Escherichia coli.   Abstrak: Penelitian ini bertujuan untuk melihat adanya efek antibakteri dari jamur endofit yang diambil dari akar bakau Rhizophora stylosa yang ditanam di sekitar Perairan Daerah Aliran Sungai Simpang Lima Jl. Piere Tendean Manado. Metode penelitian dilakukan dengan menggunakan kombinasi media Potato Dextrose Agar (PDA) dan Nutrient Agar (NA). Dari akar bakau R. stylosa diperoleh dua  jenis jamur endofit yaitu isolat A dengan karateristik miselium jamur berwarna hitam dan isolat B yang dengan karakteristik miselium berwarna coklat. Kedua isolat ini selanjutnya diujikan aktivitasnya terhadap bakteri Staphylococcus aureus dan Escherichia coli. Hasil penelitian menunjukkan isolat A dan B memberikan  zona hambat yang sama terhadap bakteri Staphylococcus aureus dan pada bakteri Escherichia coli isolat A menunjukkan diameter zona hambat yang lebih besar dibandingkan isolat B. Kesimpulan, Jamur endofit yang diisolasi dari akar bakau R. Stylosa memiliki efek antibakteri terhadap pertumbuhan bakteri S. aureus dan E. coli. Kata kunci: jamur endofit, Rhizophopra stylosa, antibakteri, Staphylococcus aureus, Escherichia coli.

scholarly journals Phytochemical, HPLC Analysis and Antibacterial Activity of Crude Methanolic and Aqueous Extracts for Some Medicinal Plant Flowers.

2016 ◽  
Vol 2 (2) ◽  
Author(s):  
Erian, N. S.; H. B. Hamed, A. Y. El-Khateeb & M. Farid
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Salicylic Acid ◽  
Growth Inhibition ◽  
Hplc Analysis ◽  
Polyphenolic Compounds ◽  
Aqueous Extracts ◽  
Methanolic Extracts ◽  
Activity Complex

Methanolic and aqueous extracts of C. cardunculus, A. millefolium, C. officinalis, and M. chamomilla flowers were Phytochemical, Identification of polyphenols and flavonoids by HPLC, and also investigated for their antibacterial activity, Escherichia coli, Staphylococcus aureus and Bacillus subtillis. The phytochemical was observed that crude methanolic and aqueous extracts of investigated flowers the highest content from activity complex. HPLC analysis identified eighteen polyphenolic compounds as authentic samples namely: Gallic acid, pyrogallol, 4-amino benzoic, protocatechuic, cataehein, chlorogenic, catechol, e.picatechen, caffien, p.oh.benzoic, caffeic, vanillic, ferulic, ellagic, benzoic acid, salicylic acid, coumarin and cinnamic acid. While, flavonoid compounds its eleven compounds as authentic samples namely: narengin, rutin, hisperdin, romarinic, quereitrin, quereetrin, narenginin, kampferol, luteolin, hispertin, and 7-Hydoxyflavon. The methanolic extracts of C. officinalis and M. chamomilla flowers produced the highest growth inhibition (43.88 and 42.11%) for against B. subtillis at 6 mg/ml, While, the aqueous extracts of C. officinalis and M. chamomilla flowers produced the highest growth inhibition (29.99 and 29.22 %) for against Bacillus subtillis at 6 mg/ml. Moreover, the C. officinalis and C. cardunculus flowers extract produced the highest growth inhibition for methanolic and aqueous extracts of against Escherichia coli at 6 mg/ml.  

scholarly journals Phytochemical screening and synergistic interactions between aminoglycosides, selected antibiotics and extracts from the bryophyte Octoblepharum albidum Hedw (Calymperaceae)

2012 ◽  
Vol 64 (2) ◽  
pp. 465-470 ◽  
Author(s):  
C.A.S. Vidal ◽  
E.O. Sousa ◽  
Fabíola Rodrigues ◽  
Adriana Campos ◽  
S.R. Lacerda ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Klebsiella Pneumoniae ◽  
Synergistic Effect ◽  
Ethanolic Extract ◽  
Antibiotic Activity ◽  
Phytochemical Screening ◽  
Bacterial Strains ◽  
E Coli ◽  
Synergistic Interactions

This work is the first to describe the modulation of antibiotic activity of the bryophyte Octoblepharum albidum Hedw extract. The antibacterial activity of ethanolic extract of O. albidum (EEOa), alone and in association with aminoglycosides, was determined against six bacterial strains by a microdilution test. The results showed a similar inhibitory activity of EEOa against Escherichia coli ATCC 25922 and Klebsiella pneumoniae ATCC 33018 (MICs 512 ?g/mL). The synergistic effect of the extracts and aminoglycosides was also verified. The most pronounced effects were obtained with EEOa + gentamicin against E. coli and EEOa + kanamycin against K. pneumoniae with MICs reduction (128 to 32 ?g/mL). The data from this study are indicative of the antibacterial activity of the bryophyte O. albidum extracts and its potential in modifying the resistance of aminoglycosides analyzed.

scholarly journals Antibacterial Activity of Polygonum pulchrum Blume Ethanol Extract on Staphylococcus aureus and Escherichia coli

2018 ◽  
Vol 3 (2) ◽  
pp. 26
Author(s):  
Asman Sadino ◽  
Idin Sahidin ◽  
Wahyuni Wahyuni
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Ethanol Extract ◽  
Inhibition Zone ◽  
Health Concern ◽  
Diffusion Method ◽  
Resistant Bacteria ◽  
E Coli ◽  
Weak Antibacterial Activity

The emergence of resistant bacteria strain has become a global health concern. It encourages the exploration of potential antibacterial agents, particularly from natural sources. The aim of this study was to investigate the antibacterial activity of ethanol extract of root, stems, leaves, and flowers of Polygonum pulchrum Blume against Staphylococcus aureus and Escherichia coli, through disc diffusion method using cup-plate method. Inhibition zone against S. aureus from roots, stems, leaves, and flowers ethanol extract were 3.5 mm, 2.5 mm, 2.25 mm, and 2.62 mm, respectively, while the inhibition zone against E. coli were 2.25 mm, 2.12 mm, 1.62 mm, and 1.75 mm, respectively. In conclusion, ethanol extract of root, stem, leaves, and flower of P. pulchrum Bl possessed weak antibacterial activity against S. aureus and E. coli.Keywords: P. pulchrum Bl, antibacterial, E. coli, S. aureus, cup-plate technique

scholarly journals Antibacterial activity of CaO from blood cockle shells (Anadara granosa) calcination against Escherichia coli

2020 ◽  
Vol 21 (6) ◽  
Author(s):  
AMANDA FIRZA RUSDARYANTI ◽  
ULFAH AMALIA ◽  
SLAMET SUHARTO
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Antibacterial Agent ◽  
Mesh Size ◽  
Inhibition Zone ◽  
Optimal Size ◽  
E Coli ◽  
Powder Concentration ◽  
Blood Cockle ◽  
Anadara Granosa

Abstract. Rusdaryanti AF, Amalia U, Suharto S. 2020. Antibacterial activity of CaO from blood cockle shells (Anadara granosa) calcination against Escherichia coli. Biodiversitas 21: 2826-2830. Calcium carbonate (CaCO3) in blood clamp shells (BCS) was able to be converted into calcium oxide (CaO) through a calcination process. Some research stated that CaO can be used in the food industries b, one of which is as an antibacterial agent. The purpose of this study was to determine the most optimal size of BCS's powder during calcination as an antibacterial agent and its effect on the activity of Escherichia coli. Data were analyzed using analysis of variance and Kruskal-Wallis test. The results showed that 200 mesh size of BCS’s powder produced the highest yield of CaO at about 98.68% compared to 120 and 230 mesh size. The best concentration of CaO powder as an antibacterial was 3.5% with a pH of 11.3 ± 0.17. CaO powder had antibacterial activity against E. coli with minimum inhibitory concentration’s value (MIC) of-0.115; a minimum bactericidal concentration’s value (MBC) of 0 CFU/mL; inhibition zone of 3.23 ± 0.2 mm. By the PCR method, DNA degradation has occurred in E. coli cells. The differences of CaO powder concentration had significant effect (P <0.05) on the inhibition zone of E. coli.

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