Antimicrobial Activity  Jangjingki (Oxalis corniculata L.) Against The Growth Of Staphylococcus Aureus, Escherichia Coli, and Candida Albicans

Jangjingki (Oxalis corniculata L.) is a plant from Oxalidaceae that has potential as a natural antimicrobial agent. The purpose of this research is to see the antimicrobial activity of methanol extract of jangjingki against the growth of Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, and Candida albicans ATCC 10231. The thick extract of jangjingki was obtained by the maceration method with methanol solvent. At the same time, the antimicrobial activity test on S. aureus and E. Coli bacteria was carried out using the hole diffusion method. The simplicia characterization showed 7.17% water, 9.68% of total ash, 11.67% water-soluble extract, and 9.17% of the ethanol-soluble section. At the same time, the methanol extract of jangjingki characterization showed 22.5% of water, 10.16% of total ash, 55.83% water-soluble extract, and 62.91% of the ethanol-soluble section. Phytochemical test results showed that the methanol extract of jangjingki contains alkaloids, saponins, flavonoids, tannins, and steroids. The results of the antimicrobial activity test with variations in the concentration of jangjingki methanol extract 15, 20, 30, and 40% on S. aureus and E. Coli bacteria showed growth inhibition activity of these two bacteria, the largest diameter of the inhibition zone was formed when the extract was given a concentration of 40% with a diameter of the area. Resistance of 8,07 mm and 11 mm, respectively. Meanwhile, the test results of inhibition of growth of the fungus C. Albicans by presenting variations in the concentration of jangjingki methanol extract of 5, 10, 15, and 20% could not inhibit the growth fungus C. Albicans.

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

Jurnal MIPA ◽

10.35799/jm.3.2.2014.5989 ◽

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.

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Antibacterial activity of Ethanol Extract of Purple Passion Fruit Peel (Passiflora edulis Sims) on Staphylococcus aureus and Escherichia coli

Indonesian Journal of Pharmaceutical and Clinical Research ◽

10.32734/idjpcr.v1i2.606 ◽

2018 ◽

Vol 1 (2) ◽

pp. 29-34

Author(s):

Sony Eka Nugraha ◽

Suryadi Achmad ◽

Erly Sitompul

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antibacterial Activity ◽

Ethanol Extract ◽

Water Soluble ◽

Passion Fruit ◽

Soluble Extract ◽

Fruit Peel ◽

Water Soluble Extract ◽

Purple Passion Fruit

Abstract.North Sumatera is the central production of purple passion fruit in Indonesia. Passion fruit was processing into beverage product that produced passion fruit peel waste. The passion fruit peel has potential effect as a sources of medicine which is need to be examined such as its antibacterial effect. The purpose of this study was to determine the characterization of simplicia, phytochemical screening and antibacterial activity of ethanol extract of purple passion fruit peel against Staphylococcus aureus and Escherichia coli. The simplicia powder was examined its characteristic include water content, water soluble extract, ethanol soluble extract, total ash and acid insoluble ash assay. The extraction was process by percolation method using ethanol 96% , then tested antibacterial activity against Staphylococcus aureus and Escherichia coli using agar diffusion method with paper discs.The result showed that the simplicia characteristic of passion fruit peel were water content of 8.64%, water soluble extract of 31.69%, ethanol soluble extract of 13.02%, ash total of 7.89%, and insoluble ash in acid of 0.816%. The phytochemical screening simplicia and ethanol extract showed the presence of flavonoid, glycoside, saponin, tannin and steroid/triterpenoid.The antibacterial activity test showed that the ethanol extract has an effective inhibition at the concentration of 300 mg/ml against Staphylococcus aureus and Escherichia coli, it showed dose dependent manner. Keywords: Passiflora edulis Sims, antibacterial, passion fruit peel, Staphylococcus aureus and Escherichia coli

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TiO2 antifouling coating based on epoxy-modified tung oil waterborne resin

Polymers and Polymer Composites ◽

10.1177/09673911211011123 ◽

2021 ◽

pp. 096739112110111

Author(s):

Hailiang Hu ◽

Minmin Chen ◽

Mengye Cao

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antimicrobial Activity ◽

Survival Rate ◽

Light Irradiation ◽

Fouling Resistance ◽

Tung Oil ◽

E Coli ◽

Antifouling Coating ◽

Waterborne Epoxy

The eco-friendly functionalized TiO2/polymer antifouling (AF) coating was successfully synthesized by dispersing TiO2 nanoparticles in waterborne epoxy-modified tung oil resin. The AF effectiveness of coating was evaluated toward Staphylococcus aureus ( S. aureus, ATCC6538), Escherichia coli ( E. coli, ATCC8739) and diatom ( Cyclotella sp., FACHB-1635). The nanoTiO2/polymer AF coating showed good antimicrobial activity both under the light and dark conditions by comparison with the pristine TiO2 nanoparticles and bulk polymer. Under light irradiation for 50 min, the AF coating showed only 8.4% and 8% survival rate for S. aureus and E. coli. In addition, The AF coatings exhibited favorable inhibition efficacy toward the growth and adhesion of Cyclotella sp., and the efficacy was enhanced with the increase of TiO2 content. It can be concluded that TiO2 nanoparticles endow the AF coatings with promoted fouling resistance properties.

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Evaluation du potentiel antimicrobien et de la toxicité des extraits de Jatropha multifida Linn, (Euphorbiaceae)

Journal of Applied Biosciences ◽

10.35759/jabs.151.4 ◽

2020 ◽

Vol 151 ◽

pp. 15550-15558

Author(s):

Amégninou Agban ◽

Yao Hoekou ◽

Passimna Pissang ◽

Tchadjobo Tchacondo ◽

Komlan Batawila

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antimicrobial Activity ◽

Candida Albicans ◽

Aqueous Extract ◽

E Coli ◽

Toxicological Studies ◽

Jatropha Multifida

Objectif : L’objectif de ce travail était d’évaluer in vitro l’activité antimicrobienne des extraits de feuilles et tige de Jatropha multifida sur la croissance de Candida albicans, Escherichia coli et Staphylococcus aureus, puis d’évaluer in vivo la toxicité de cette plante. Méthodologie et résultats : Les méthodes de diffusion en milieu gélosé et de microdilution en milieu liquide ont été utilisées pour évaluer l’effet antimicrobien. Une étude en subaigüe était réalisée afin d’explorer les effets toxiques de l’extrait aqueux des feuilles. Les résultats des tests antimicrobiens montrent une activité des extraits de feuilles et tige de J. multifida sur la croissance des souches utilisées avec des diamètres de zones d’inhibition allant de 8 à 25 mm et des concentrations minimales inhibitrices (CMI) variant de 0,039 mg/mL à 1,25 mg/mL à l’exception des souches de E. coli qui sont résistantes aux extraits de la tige. L’administration en subaigüe de l’extrait aqueux des feuilles de J. multifida à la dose de 600 mg/kg entraîne une perte significative de poids chez les souris. Conclusion et applications des résultats : Les extraits aqueux, éthanolique et hydroéthanolique des feuilles et tige de J. multifida possèdent d’activité antimicrobienne et pourraient être utilisés dans le traitement des Candidoses à C. albicans et des infections à S. aureus. Mais l’essai de toxicité subaigüe montre que l’extrait aqueux de la plante serait toxique. Des études toxicologiques approfondies restent donc nécessaires sur ces extraits afin de mieux élucider leur inocuité. Mots-clés : Jatropha multifida, extraits de feuilles et de tige, activités antifongique et antibactérienne, toxicité. Agban et al., J. Appl. Biosci. 2020 Evaluation du potentiel antimicrobien et de la toxicité des extraits de Jatropha multifida Linn, (Euphorbiaceae) 15551 Evaluation of antimicrobial potential and toxicity of Jatropha multifida Linn, (Euphorbiaceae) extracts ABSTRACT Objective: The objective of this study was to evaluate in vitro the antimicrobial activity of leaves and stem of Jatropha multifida extracts against Candida albicans, Escherichia coli and Staphylococcus aureus, and then to evaluate in vivo the toxicity of this plant. Methodology and Results: The agar well-diffusion and the NCCLS broth microdilution methods were used to assess the antimicrobial effect. A subacute study was carried out to explore the toxic effects of the aqueous extract of the leaves. The results of the antimicrobial tests show an activity of the extracts of leaves and stems of J. multifida on the growth of the strains used with diameters of inhibitory zones ranging from 8 to 25 mm and minimum inhibitory concentrations (MIC) varying from 0.039 mg/mL to 1.25 mg/mL exception E. coli strains which are resistant to extracts from the stem. Subacute administration of the aqueous extract of the leaves of J. multifida at a dose of 600 mg/kg leads to a significant loss of weight in the mice. Conclusion and application of findings : The aqueous, ethanolic and hydroethanolic extracts of the leaves and stem of J. multifida have antimicrobial activity and could be used in the treatment of Candidiasis and bacterial infections due respectively to C. albicans and S. aureus. But the subacute toxicity test shows that the aqueous extract of the plant would be toxic. Extensive toxicological studies therefore remain necessary on these extracts in order to better elucidate their safety. Keywords: Jatropha multifida extracts of leaves and stem, antifungal and antibacterial activities, toxicity

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Antimicrobial activity of isolated compounds and semisynthetic derivatives from Miconia ferruginata

Acta Brasiliensis ◽

10.22571/2526-4338249 ◽

2020 ◽

Vol 4 (1) ◽

pp. 49

Author(s):

Gracielle Oliveira Sabbag Cunha ◽

Ana Paula Terezan ◽

Andreia Pereira Matos ◽

Marcela Carmen De Melo Burger ◽

Paulo Cezar Vieira ◽

...

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Pseudomonas Aeruginosa ◽

Antimicrobial Activity ◽

Methyl Esters ◽

Carboxyl Group ◽

Isomeric Mixture ◽

E Coli ◽

Bacillus Subtilis Atcc ◽

Derivatives Of

This study evaluated the antimicrobial activity of isolated compounds and semisynthetic derivatives from Miconia ferruginata (Melastomataceae) against five microorganisms: Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922), Bacillus subtilis (ATCC 6623), Pseudomonas aeruginosa (ATCC 15442), and Candida albicans (ATCC 10231). The isomeric mixture of ursolic and oleanolic acids was active against S. aureus (MIC = 250 μg mL-1) and against E. coli, B. subtilis, and P. aeruginosa (MIC = 500 μg mL-1). The flavone 5,6,7-trihydroxy-4’-methoxyflavone and the methyl esters, semisynthetic derivatives of a mixture of ursolic and oleanolic acids, showed no activity against the tested microorganisms. These results suggest that the carboxyl group present in the triterpenes may contribute to antimicrobial activity.

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Uji Aktivitas Antimikroba Ekstrak n-Butanol Madu Hutan (Apis nigrocincta) dari Kabupaten Selayar dengan Metode KLT-Bioautografi

Sasambo Journal of Pharmacy ◽

10.29303/sjp.v1i2.34 ◽

2020 ◽

Vol 1 (2) ◽

pp. 41-45

Author(s):

A.Suparlan Isya Syamsu

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antimicrobial Activity ◽

Bacillus Subtilis ◽

Staphylococcus Epidermidis ◽

Salmonella Typhi ◽

Test Results ◽

Butanol Extract ◽

Apis Nigrocincta ◽

And Staphylococcus Aureus

Preliminary research has been conducted on the antimicrobial activity of n-Butanol extract of forest honey (Apis nigrocincta). This study aims to determine the antimicrobial activity of forest honey from Selayar Regency on the growth of test microbes, using the method of solid dilution with the test microbial Bacillus subtilis, Staphylococcus aureus, Streptococcus mutans, Pseudomonas aeruginosa, Salmonella typhi, Escherichia coli, Vibrio sp, Staphylococcus epidermidis, and Candida albicans against n-butanol extract from forest honey (Apis nigrocincta) at 1 mg/ml. The results obtained showed that n-butanol extract inhibited the growth of bacteria Bacillus subtilis, Escherichia coli, Staphylococcus aureus, Staphylococcus epidermidis, and Staphylococcus aureus. To estimate the compounds that provide antimicrobial activity, the TLC-Bioautography test is performed. Obtained the best results from the separation of compounds by TLC using Chlorophorom eluate: Acetone (3: 1). The TLC-Bioautographic test results showed that the spots with an Rf value of 0.29 gave activity to Bacillus subtilis, Escherichia coli, and Staphylococcus epidermidis, and gave positive results on the appearance of flavonoid compounds.

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UJI AKTIVITAS ANTIBAKTERI EKSTRAK DAUN TEMBELEKAN (Lantana camara Linn) TERHADAP PERTUMBUHAN Staphylococcus aureus dan Escherichia coli

Biocelebes ◽

10.22487/bioceb.v15i2.15540 ◽

2022 ◽

Vol 15 (2) ◽

pp. 90-97

Author(s):

Gaby Maulida Nurdin

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antibacterial Activity ◽

Ethanol Extract ◽

Lantana Camara ◽

Diffusion Method ◽

E Coli ◽

Activity Test ◽

Growth Inhibitory ◽

One Way Anova

This study aimed to determine the effect of concentration ethanol extract from tembelakan leaf (Lantana camara Linn) on bacteria growth of Staphylococcus aureus and Escherichia coli. Extraction was done by maceration using ethanol 96% and then separated using rotary evaporator. Antibacterial activity test of the ethanol extract by Well agar diffusion method. Variation in crude extract saponin used in this study was 5%, 10%, 15%, 20%, 25% and positive controls were used for comparison with Amoxicilin and Chloramphenicole concentration of 25 µg/mL and DMSO as a negative control. The results of antibacterial activity test is indicated by the formation of growth inhibitory region S. aureus and E. coli. The result of growth inhibitory regions was analyzed by One way ANOVA. One way ANOVA test results indicate that there are effects of ethanol extract concentration of tembelekan leaf (L. camara Linn) against S. aureus and E. coli. Effective concentration of ethanol extract tembelekan leaf (L. camara Linn) when compared with positive control to inhibit the growth of S. aureus and E. coli is at 25% with a relatively strong antibacterial activity. Test with phytochemicals screening method which is showed that tembelekan leaf contains the flavanoid, saponins, and tannins compounds as antibacterial

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UJI AKTIVITAS ANTIBAKTERI EKSTRAK DAN FRAKSI SPONS Leucetta chagosensis DARI PERAIRAN PULAU MANTEHAGE SULAWESI UTARA TERHADAP PERTUMBUHAN BAKTERI Staphylococcus aureus DAN Escherichia coli

PHARMACON ◽

10.35799/pha.10.2021.34032 ◽

2021 ◽

Vol 10 (2) ◽

pp. 834

Author(s):

Eunike Pelealu ◽

Defny S. Wewengkang ◽

Surya Sumantri Abdullah

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Bacterial Growth ◽

Pathogenic Bacteria ◽

Inhibition Zone ◽

Disk Diffusion ◽

E Coli ◽

Activity Test ◽

Escherichia Coli Bacteria ◽

Metabolite Content

ABSTRACTSponges are one of the biota components that make up coral reefs which are quite widely distributed. The metabolite content in the sponge can ward off and inhibit the pathogenic bacteria that interfere with it. This study aims to determine the activity of inhibiting bacterial growth from the extract and fraction of Leucetta chagosensis sponge against the growth of Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli bacteria. The samples were extracted using the maceration method with 95% ethanol solvent and then fractionated using 3 solvents with different polarity levels, namely methanol, n-hexane and chloroform. Activity test using the disk diffusion agar method of Kirby and Bauer. Only the MeOH fraction was able to inhibit the growth of E. coli bacteria with an average inhibition zone of 6.88 mm. Whereas for S.aureus bacteria extracts and all fractions showed activity to inhibit bacterial growth with an average inhibition zone of EtOH (6.61 mm), CHCI3 (6.68 mm), n-hexane (7.83 mm) and MeOH (8.00 mm), respectively. All activities that are shown are categorized as weak (weak).Keywords: Antibacterial, Leucetta chagosensis, Staphylococcus aureus, Escherichia coli ABSTRAKSpons merupakan salah satu komponen biota penyusun terumbu karang yang penyebarannya cukup luas. Kandungan metabolit yang ada di dalam spons dapat menangkal dan menghambat bakteri patogen pengganggunya. Penelitian ini bertujuan untuk melihat aktivitas menghambat pertumbuhan bakteri dari ekstrak dan fraksi spons Leucetta chagosensis. terhadap pertumbuhan bakteri Gram positif Staphylococcus aureus dan Gram negatif Escherichia coli. Sampel di ekstraksi menggunakan metode maserasi dengan pelarut etanol 95% lalu di fraksinasi dengan menggunakan 3 pelarut dengan tingkat kepolaran yang berbeda yaitu metanol, n-heksan dan kloroform. Uji aktivitas menggunakan metode disk diffusion agar Kirby dan Bauer. Hanya fraksi MeOH yang mampu menghambat pertumbuhan bakteri E.coli dengan zona hambat rata-rata 6,88 mm. Sedangkan terhadap bakteri S.aureus ekstrak dan semua fraksi menunjukan aktifitas menghambat pertumbuhan bakteri dengan rata-rata zona hambat masing-masing EtOH (6,61 mm), CHCl3 (6,68 mm), n-Heksan (7,83 mm), dan MeOH (8,00 mm). Semua aktivitas yang ditunjukan dikategorikan lemah (weak).Kata kunci : Antibakteri, Leucetta chagosensis, Staphylococcus aureus, Escherichia coli

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Aktivitas Antibakteri Sabun Cuci Tangan yang Mengandung Ekstrak Metanol Rumput Laut Eucheuma spinosum (Antibacterial Activity Test of Eucheuma spinosum Methanol Extract Hand Wash)

MEDULA ◽

10.46496/medula.v7i1.11494 ◽

2020 ◽

Vol 7 (1) ◽

Author(s):

Nur Illiyyin Akib ◽

Mariani Triwatami ◽

Andi Eka Purnama Putri

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antibacterial Activity ◽

Methanol Extract ◽

Antibacterial Activities ◽

Dilution Method ◽

E Coli ◽

Hand Wash ◽

Ethanol Extracts ◽

Physical And Chemical

Background: Eucheuma spinosum seaweed contain flavonoid, triterpenoid, alkaloids and polyphenol which has been widely used in antibacterial activity. Purpose(s):The aim of the research are to determine antibacterial activities of metanol extracts of E. spinosum against Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922; to formulate hand wash of seaweed of methanol extract E. spinosum that has antibacterial activity and has physical and chemical stability. Methods: Seaweed E.spinosum methanol extract was derived by maceration method. Antibacterial activities of the extract were tested by liquid dilution and solid dilution method. Hand wash was formulated by mechanical dissolved methods. Antibacterial activity of hand wash were tested by liquid dilution and solid dilution method. Physical and chemical stabilities were conducted by cycling test. Results:. These were showed through minimum inhibitory concentration (MIC) of ethanol extracts of E. spinosum against S. aureus ATCC 25923 at concentrations of 6% and E. coli ATCC 25922 at concentrations of 6%. The minimum bactericidal concentration (MBC) of ethanol extracts of E. spinosum against S. aureus ATCC 25923 at concentrations of 8% and E. coli ATCC 25922 at concentrations of 8%. Formulation of hand wash seaweed E. spinosum methanol extract at concentrations of 8% and 10%. The test of stabilities results of hand wash changes were organoleptic, viscosity, pH, and foaming ability were accordance to qualified standard. The antibacterial activity of hand wash contains seaweed E. spinosum methanol extract at concentration of 8% and 10% have bactericidal activity againts S. aureus ATCC 25923 and E. coli ATCC 25922. Conclusion: Overall, these results suggested that formula of hand wash contains E. spinosum metanol extracts have antibacterial properties against S. aureus ATCC 25923 and E. coli ATCC 25922.Keywords: antibacterial, Eucheuma spinosum, hand wash, physical and chemical stability Latar Belakang: Rumput laut Eucheuma spinosum mengandung flavonoid, triterpenoid, alkaloid, dan polifenol yang memiliki aktivitas antibakteri. Tujuan: Penelitian ini bertujuan mengetahui aktivitas antibakteri ekstrak metanol E. spinosum terhadap Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922; membuat sediaan sabun cuci tangan dari ekstrak metanol E. spinosum yang memiliki aktivitas antibakteri dan stabil secara fisika dan kimia. Metode: Ekstrak metanol E. spinosum diperoleh dengan metode maserasi. Uji aktivitas antibakteri ekstrak dilakukan dengan metode dilusi cair dan dilusi padat. Sabun cuci tangan diformulasi dengan metode pencampuran mekanik. Uji aktivitas antibakteri sabun cuci tangan dilakukan dengan metode dilusi cair dan dilusi padat. Uji stabilitas fisika kimia dilakukan dengan metodecycling test. Hasil: Konsentrsi Hambat Minimum (KHM) ekstrak metanol E. spinosum terhadap S. aureus ATCC 25923 adalah 6% dan terhadap E. coli ATCC 25922 adalah 8%. Ekstrak metanol E. spinosum dapat diformulasi menjadi sabun cuci tangan dengan konsentrasi 8% dan 10%. Uji stabilitas menunjukkan bahwa perubahan organoleptik, viskositas, pH, dan kemampuan membentuk busa masih berada dalam nilai yang dipersyaratkan. Uji aktivitas antibakteri sabun cuci tangan yang mengandung ekstrak metanol E. spinosum dengan konsentrasi 8% dan 10% memiliki aktivitas antibakteri terhadap ATCC 25923 and E. coli ATCC 25922. Simpulan: Formula sabu cuci tangan yang mengandung ekstrak metanol E. spinosum memiliki aktivitas antibakteri terhadap ATCC 25923 and E. coli ATCC 25922.Kata kunci: antibakteri, Eucheuma spinosum, sabun cuci tangan, stabilitas fisika kimia

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Screening of antimicrobial activity of aqueous and ethanolic extracts of some medicinal plants from Cameroon and assessment of their synergy with common antibiotics against multidrug-resistant uropathogenic bacteria.

10.1101/2021.09.10.459100 ◽

2021 ◽

Author(s):

Mbarga Manga Joseph Arsene ◽

Podoprigora Irina Viktorovna ◽

Anytoulou Kitio Linda Davares ◽

Mouafo Hippolyte Tene ◽

Irma Aurelia Monique Manga ◽

...

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antimicrobial Activity ◽

Klebsiella Oxytoca ◽

Diffusion Method ◽

Distilled Water ◽

Strong Activity ◽

E Coli ◽

Ethanolic Extracts ◽

Uropathogenic Bacteria

Background and aim: The Cameroonian flora abounds in plants with multidimensional therapeutic virtues which can play an important role in the fight against resistance to antibiotics and the search for new antimicrobials. This study aimed to screen the antimicrobial potential of aqueous and ethanolic extracts of thirteen (13) samples (Bark, leaf, seed) of eight (8) plants from Cameroon against 3 reference pathogens and to evaluate their synergy with conventional antibiotics against eleven (11) multiresistant uropathogenic (MRU) bacteria. Method: Bioactive compounds were extracted from leaves of Leucanthemum vulgare, Cymbopogon citratus (DC.) Stapf, Moringa oleifera Lam and Vernonia amygdalina Delile; barks of Cinchona officinalis and Enantia chlorantha Oliv; barks and seeds of Garcinia lucida Vesque and leaves and seeds of Azadirachta indica (Neem) using distilled water and ethanol as solvents. The extracts were tested against Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 6538 and Candida albicans 10231 using the well diffusion method and the microdilution method. The synergistic effect was assessed (using disc diffusion method and the checkerboard method) against MRU bacteria namely Achromobacter xylosoxidans 4892, Citrobacter freundii 426, Enterococcus avium 1669, Escherichia coli 1449, Klebsiella oxytoca 3003, Kocuria rizophilia. 1542, Moraxella catarrhalis 4222, Morganella morganii 1543, Pseudomonas aeruginosa 3057, Staphylococcus aureus 1449 and Streptococcus agalactiae 3984. Results: We found that distilled water extracted a more important mass of phytochemical compounds (7.9-21.2%) compared to ethanol (5.8-12.4%). Except C. officinalis and G. lucida leaves, the rest of extracts were active with inhibition diameters (ID) ranging from 5 to 36 mm. Both ethanolic (EE) and aqueous extract (AE) of E. chloranta bark (ECB) were the most active against all pathogens with the mean ID of 17 and 36 mm vs S. aureus ATCC 6538, 23 and 14 mm vs E. coli ATCC 25922 and 36 and 19 mm vs C. albicans ATCC 10231. Only the EE of E. chloranta bark (ECB) had a strong activity against all the microorganisms tested (MIC <2 mg / ml); L. vulgare leaves (LVL) and G. lucida seed (GLS) had moderate (average MIC of 8 mg/ml) while all other extracts showed very weak antimicrobial activity. In addition, the fractional inhibitory concentration (FIC) ranged from 0.125 to 0.750. No antagonism (FIC> 4) or indifference (1≤ FIC≤4) was noted between the extracts and the antibiotics, but the best synergies were found with ECB which well-modulated Kanamycin (FIC = 0.125 against S. aureus and 0.250 against E. coli), nitrofurantoin (FIC = 0.250 against S. aureus and 0.188 against E. coli) and ampicillin (FIC = 0.125 against E. coli). Similarly, compared to other extracts, ECB, LVL and GLS also well-modulated ampicillin, ceftazidime, tetracycline, nitrofurantoin, and trimethoprim against all the above-mentioned resistant uropathogenic bacteria with important increase in fold area (IFA). Conclusion: This study show that E. chlorantha bark, L. vulgare leaves G. lucida seed, have good antimicrobial activity against both bacteria (Gram positive and Gram negative) and fungi (C. albicans); and should be more investigated for their possible use to the fight against MDR and MRU microorganisms.

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