Aktivitas Antibakteri TiO2-Anatas Terdadah  -Vanadium dan -Kromium

Samples of vanadium- and -chromium doped TiO2-anatas have been conducted antibacterial activity against the bacteria Escherichia coli (E. Coli). The minimum kill concentration (MBC) against the bacteria of E. Coli is determined by liquid dilution method. The antibacterial activity test of 0; 2.3; 3.3; 4.9% wt. vanadium doped TiO2-anatas and 0; 1.1; 3.9; 4.4% wt. chromium doped TiO2-anatas have been performed against bacteria of E. Coli in the absence of light (dark). The test results indicate that the presence of 3.3 and 4.9 in %wt. vanadium-TiO2-anatas are able to inhibit the growth of bacteria E. Coli, contrary all chromium doped TiO2-anatas are not able to inhibit the growth of bacteria of E. Coli.

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Aktivitas Antibakteri TiO2-Anatas Terdadah -Vanadium dan -Kromium

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.v12i2.1744 ◽

2016 ◽

Vol 12 (2) ◽

pp. 112

Author(s):

Hari Sutrisno ◽

Ariswan Ariswan ◽

Dyah Purwaningsih

Keyword(s):

Escherichia Coli ◽

Antibacterial Activity ◽

Dilution Method ◽

Test Results ◽

E Coli ◽

Activity Test ◽

Growth Of Bacteria

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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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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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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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Hand Sanitizer Ekstrak Daun Pucuk Idat (Cratoxylum glaucum) sebagai Antibakteri Staphylococcus aureus dan Escherichia coli

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.16.2.32208.227-231 ◽

2020 ◽

Vol 16 (2) ◽

pp. 227

Author(s):

Megawati Ayu Putri ◽

Marhan Ebit Saputra ◽

Ike Nur Amanah ◽

Siska Musiam ◽

Verry Andre Fabiani

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antibacterial Activity ◽

Leaf Extract ◽

Skin Irritation ◽

Test Results ◽

Antibacterial Test ◽

E Coli ◽

Hand Sanitizer ◽

Carboxymethyl Cellulose Sodium

Daun pucuk idat merupakan tanaman lokal Bangka Belitung yang memiliki aktivitas antibakteri terhadap Staphylococcus aureus dan Escherichia coli.Sebagai upaya pemanfaatan potensi lokal maka dibuat suatu produk sediaan gel hand sanitizer yang praktis dan ekonomis. Ekstrak daun pucuk idat diperoleh dengan metode maserasi menggunakan pelarut aseton. Ekstrak yang dihasilkan diformulasikan dalam berbagai konsentrasi ekstrak daun pucuk idat (40%, 60%, 80%, dan 100%) dengan penambahan carboxymethyl cellulose sodium (CMC-Na) 0,25 g, gliserin 1 mL, propilenglikol 0,5 mL serta akuades 10 mL. Setiap formulasi gel handsanitizer dilakukan pengujian stabilitas fisik meliputi uji organoleptis, uji homogenitas, uji daya sebar, uji pH, uji iritasi kulit serta uji aktivitas antibakteri. Hasil uji organoleptik menunjukkan bahwa semua konsentrasi hand sanitizer berbentuk gel, berwarna kuning muda, berbau dan homogen. Uji pH dan daya sebar gel hand sanitizer telah memenuhi ketentuan SNI No. 06-2588. Pengujian iritasi kulit tidak menimbulkan kemerahan, gatal-gatal dan tidak mengakibatkan kulit menjadi kasar pada punggung tangan sukarelawan. Berdasarkan uji sifat fisik gel hand sanitizer yang dihasilkan memiliki sifat fisik yang serupa dengan gel hand sanitizer komersial. Hasil uji antibakteri hand sanitizer ekstrak daun pucuk idat terhadap E. coli dengan konsentrasi ekstrak daun pucuk idat 40%, 60%, 80%, dan 100% diperoleh diameter zona hambat berturut-turut sebesar 11,5 mm, 17,4 mm, 19,3 mm dan 19,3 mm, sedangkan pada bakteri S. aureus diperoleh diameter zona hambat berturut-turut sebesar 17,1 mm, 24,2 mm, 27,4 mm, dan 18 mm. Hasil uji antibakteri menunjukkan bahwa sediaan gel hand sanitizer ekstrak aseton daun pucuk idat memiliki aktivitas antibakteri terhadap bakteri E. coli dan S. aureus.Hand Sanitizer of Leaves Extract of Cratoxylum glaucum as Antibacterial of Staphylococcus aureus and Escherichia coli. Cratoxylum glaucum leaves is local plants of Bangka Belitung which have antibacterial activity against S. aureus and E. coli. As an effort to explore local potential, a practical and economical gel hand sanitizer product was prepared. Cratoxylum glaucum leaves extract was obtained by maceration method using acetone. The extract was formulated in various concentrations of Cratoxylum glaucum leaf extract (40%, 60%, 80%, and 100%) with the addition of 0.25 g carboxymethyl cellulose sodium (CMC-Na), 1 mL glycerin, 0.5 mL propylene glycol and 10 mL distilled water. Each concentration of the hand sanitizer gel was tested for physical stability including organoleptic, homogenity, spreadability, pH, skin irritation and antibacterial activity test. The organoleptic test results showed that all concentrations of hand sanitizers formed gel with light yellow color, smelly odor and homogeneous form. The analysis of pH and spreadability of hand sanitizer gel has fulfilled SNI No. 06-2588. The skin irritation testing does not cause redness, itching, and rough skin on the back of volunteer hands. Based on the physical properties test, the resulting hand sanitizer gel has physical properties similar to commercial hand sanitizer gel. The results of the antibacterial test of hand sanitizer against E. coli with Cratoxylum glaucum leaf extract concentrations of 40%, 60%, 80%, and 100% obtained the diameter inhibitory zones of 11.5 mm, 17.4 mm, 19.3 mm, and 19.3 mm, respectively. Meanwhile, the results of the antibacterial test of hand sanitizer against S. aureus bacteria with concentration of 40%, 60%, 80%, and 100% shows that the inhibition zone diameters were 17.1 mm, 24.2 mm, 27.4 mm, and 18 mm, respectively. The antibacterial test results shows that the gel hand sanitizer prepared has antibacterial activity against E. coli and S. aureus bacteria.

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ANTIMICROBIAL ACTIVITY OF METHANOL EXTRACT FROM STEM BARK OF Cinnamomum sintoc

Jurnal Natural ◽

10.24815/jn.v0i0.8049 ◽

2017 ◽

Vol 17 (2) ◽

pp. 77

Author(s):

Nurdin Saidi ◽

Hira Helwati ◽

Lailatul Qhadariah Lubis ◽

Muhammad Bahi

Keyword(s):

Escherichia Coli ◽

Antimicrobial Activity ◽

Antibacterial Activity ◽

Methanol Extract ◽

Stem Bark ◽

Dilution Method ◽

Agar Dilution Method ◽

E Coli ◽

Paper Disk ◽

Agar Dilution

Antimicrobial activity of methanol extract from stem bark of Cinnamomum sintoc has been evaluated against Candida albicans, Staphylococcus aureus and Escherichia coli. The extraction of compound was carried out by maceration, then isolation by column chromatograph, which yielded five (5) subfractions (A-E). Activity against fungus C. albicans, S. aureus bacteria dan E. coli using agar dilution method in paper disk. Methanol extract was not potent against antifungal activity but shows antibacterial activity with medium category. Subfraction C showed that antibacterial activity against S. aureus and E. coli with weak category, but subfractions D and E did not show any activity.

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Isolasi Bakteri Endofit Dari Sea Grass Yang Tumbuh Di Kawasan Pantai Pulau Lombok Dan Potensinya Sebagai Sumber Antimokroba Terhadap Bakteri Patogen

JURNAL BIOLOGI TROPIS ◽

10.29303/jbt.v16i2.226 ◽

2016 ◽

Vol 16 (2) ◽

Author(s):

Lalu Zulkifli, Dwi Soelistya Diah Jekti, Nur Lestari dan Dewa Ayu Citra Rasmi

Keyword(s):

Escherichia Coli ◽

Antibacterial Activity ◽

Endophytic Bacteria ◽

Klebsiella Pneumonia ◽

Diffusion Test ◽

Biochemical Tests ◽

Disk Diffusion Test ◽

E Coli ◽

Activity Test ◽

Sea Grass

ABSTRAK Telah dilakukan isolasi bakteri endofit dari seagrass jenis Enhalus acoroides (Linneaus f.) Royle, yang tumbuh di perairan pantai Kuta Lombok Tengah. Media yang digunakan adalah NA, BHI, TSA dan Mac Conkey’ Agar, dengan menggunakan bagian akar batang, dan daun sebagai sumber isolat. Dilakukan subkultur berulang hingga diperoleh isolat endofit yang membentuk koloni tunggal.Terhadap koloni tunggal ini dilakukan identifikasi morfologi dan uji biokimia. Selanjutnya dilakukan uji aktivitas antibakteri dengan metode Difusi Agar (Disk diffusion test) dengan teknik sumuran menggunakan lima bakteri uji klinis yaitu : Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia, Shygella dysentriae, dan Staphylococcus. aureus. Kategori sensitivitas bakteri uji klinis terhadap ekstrak bakteri endofit mengacu kepada Mukherjee (1989). Identifikasi morfologi, uji biokimia dan uji aktifitas antibakteri dilakukan terhadap 11 isolat dari 28 isolat awal yang diperoleh diperoleh, Hasil menunjukkan bahwa semua isolat bakteri endofit tergolong dalam bentuk batang, 8 diantaranya termasuk Gram Positif. Hasil uji antibakteri menggunakan metode Difusi agar dengan teknik sumuran menunjukkan bahwa hampir semua isolat memiliki aktivitas antibakteri terhadap bakteri uji dengan daya hambat yang bervariasi. Diperoleh satu isolat yang palingkuat efeknya dan paling luas spektrumnya yaitu isolate 1 yang mampu menghambat pertumbuhan 4 jenis bakteri uji (E. coli, P. aeruginosa, K. pneumonia, S. dysentriae, dan S. aureus) hingga sampai pada kategori sensitif (dimeter zona hambat lebih dari 12 mm). Dapat disimpulkan bahwa isolat bakteri endofit yang berasal dari seagrass sukup potensial untuk dikembangkan sebagai salah satu alternatif sumber antibakteri untuk mengatasi penyakit yang disebabkan oleh bakteri pathogen. Kata Kunci: Antimikroba, bakteri endofit, lamun (sea grass), aktivitas antibakteri.ABSTRACTHave done the isolation of endophytic bacteria on seagrass kind Enhalus acoroides (Linnaeus f.) Royle, who grew up in the coastal waters of Kuta Lombok. The medium used is NA, BHI, TSA and Mac Conkey 'Agar, using the roots stems and leaves as a source of isolates. Subcultures performed repeatedly to obtain isolates endophytic form colonies tunggal.Terhadap single colony is to identify morphological and biochemical tests. Furthermore, the antibacterial activity test by the method Diffusion Agar (Disk diffusion test) with wells technique uses five clinical trials that bacteria: Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia, Shygella dysentriae, and Staphylococcus. aureus. Categories sensitivity of bacteria clinical trials of endophytic bacteria extract refers to Mukherjee (1989). Identification of morphological, biochemical tests and antibacterial activity test conducted on 11 isolates of 28 isolates obtained initial obtained results showed that all isolates of endophytic bacteria belong in the form of rods, 8 of which include Gram Positive. Antibacterial test results using the diffusion method in order to pitting technique showed that almost all isolates possess antibacterial activity against bacteria inhibition test with varied. Retrieved palingkuat one isolate its effects and the most extensive spectrum that isolate one capable of inhibiting the growth of four kinds of test bacteria (E. coli, P. aeruginosa, K. pneumoniae, S. dysentriae, and S. aureus) to arrive at a sensitive category (dimeter inhibitory zone more than 12 mm). It can be concluded that endophytic bacteria isolates originating from sukup seagrass potential to be developed as an alternative source of antibacterial to treat diseases caused by pathogenic bacteria.Keywords: Antimicrobial, endophytic bacteria, seagrass (sea grass), antibacterial activity.

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

Journal of Pharmaceutical And Sciences ◽

10.36490/journal-jps.com.v4i1.58 ◽

2021 ◽

Vol 4 (1) ◽

pp. 1-11

Author(s):

Misrahanum Misrahanum ◽

Syarifah Dhea Almunawwarah ◽

Hira Helwati ◽

Hilda Maysarah ◽

Sadli Sadli

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antimicrobial Activity ◽

Methanol Extract ◽

Water Soluble ◽

Test Results ◽

Soluble Extract ◽

E Coli ◽

Activity Test ◽

Water Soluble Extract

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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SINTESIS DAN KARAKTERISASI NANOPARTIKEL CuFe2O4 SERTA APLIKASINYA SEBAGAI ANTIBAKTERI

CHEMISTRY PROGRESS ◽

10.35799/cp.12.2.2019.27929 ◽

2020 ◽

Vol 12 (2) ◽

Author(s):

Almendo G. Lasera ◽

Henry Aritonang ◽

Harry Koleangan

Keyword(s):

Electron Microscopy ◽

Escherichia Coli ◽

Scanning Electron Microscopy ◽

Staphylococcus Aureus ◽

Antibacterial Activity ◽

Gram Negative Bacteria ◽

E Coli ◽

Activity Test ◽

Sem Imaging ◽

Scanning Electron

ABSTRAKNanopartikel CuFe2O4 disintesis menggunakan metode kopresipitasi. Material yang telah disintesis, kemudian dikarakterisasi dengan menggunakan Scanning Electron Microscopy (SEM) dan Xray-Diffraction (XRD) serta di uji aktifitasnya sebagai antibakteri dengan menggunakan bakteri Staphylococcus aureus (Gram positif) dan Escherichia coli (Gram negatif). Hasil citra SEM memperlihatkan morfologi nanopartikel CuFe2O4 berbentuk persegi yang tidak beraturan. Difraktogram XRD menunjukkan bahwa ukuran sampel CuFe2O4 yang diperoleh adalah sebesar 20,136 nm. Uji aktifitas antibakteri yang telah dilakukan menunjukkan bahwa, nanopartikel CuFe2O4 jauh lebih baik dalam menghambat pertumbuhan bakteri E. coli dibandingkan dengan bakteri S.aureus, masing-masing 24 mm dan 6,5 mm. ABSTRACTCuFe2O4 nanoparticles were synthesized using the coprecipitation method. The synthesized material was then characterized using Scanning Electron Microscopy (SEM) and Xray-Difraction (XRD) and tested as antibacterial activity using Staphylococcus aureus (Gram positive) and Escherichia coli (Gram negative) bacteria. SEM imaging showed morphology of CuFe2O4 nanoparticles shaped like a rod. XRD diffractogram showed that the size of CuFe2O4 nanoparticles that obtained at 20.13 nm. The antibacterial activity test that has been done shows, CuFe2O4 nanoparticles are much better in inhibiting the growth of E. coli bacteria compared with S. aureus bacteria, 24 mm and 6,5 respertivelly.

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Aktivitas Antibakteri Ekstrak Metanol Bunga Teratai (Nymphaea pubescens Willd)

Jurnal Pharmascience ◽

10.20527/jps.v7i2.8486 ◽

2020 ◽

Vol 7 (2) ◽

pp. 75

Author(s):

Amalia Khairunnisa ◽

Nashrul Wathan ◽

Mia Fitriana ◽

Fadlilaturrahmah Fadlilaturrahmah ◽

Nisriyati Fiddina

Keyword(s):

Antibacterial Activity ◽

Minimum Inhibitory Concentration ◽

Inhibitory Concentration ◽

Methanol Extract ◽

Test Methods ◽

Diffusion Method ◽

Dilution Method ◽

Phytochemical Screening ◽

E Coli ◽

Activity Test

Nymphaea pubescens Willd telah diketahui mempunyai efek antibakteri, terutama pada biji dan daunnya. Tetapi sampai saat ini bagian bunga dari tanaman tersebut belum dilakukan pengujian aktivitas antibakteri. Tujuan dari penelitian ini untuk melakukan skrining fitokimia, uji aktivitas antibakteri dan penentuan konsentrasi hambat minimum (KHM) dari ekstrak metanol bunga N. pubescens terhadap S. aureus dan E. coli. Proses ekstraksi bunga N. pubescens dimaserasi menggunakan pelarut metanol dengan perbandingan 1: 4 b/v. Metode pengujian yang digunakan ada dua yaitu metode difusi untuk pengujian aktivitas antibakteri dan metode dilusi untuk pengukuran konsentrasi hambat minimum (KHM). Hasil skrining fitokimia didapatkan bahwa ekstrak metanol bunga N. pubescens mengandung senyawa golongan fenolik, saponin dan flavonoid. Hasil pengujian aktivitas antibakteri menunjukkan bahwa ekstrak metanol bunga N.pubescens mampu menghambat S. aureus (diameter hambat 10 ± 0,29 mm) dan E.coli (diameter hambat 10,2 ± 0,50 mm). Konsentrasi hambat minimum dari ekstrak metanol bunga N. pubescens terhadap S.aureus sebesar 12,5% dan terhadap E.coli sebesar 25%. Dapat disimpulkan bahwa ekstrak metanol bunga N. pubescens memiliki aktivitas sebagai antibakteri. Nymphaea pubescens Willd has known to have antibacterial effects, especially on the seeds and leaves. However, until now the flower of the plant has not been tested for antibacterial activity. The purpose of this study was to perform phytochemical screening, antibacterial activity test and determine the minimum inhibitory concentration (MIC) of the methanol extract of N. pubescens flowers against S. aureus and E. coli. The process of extracting N. pubescens flowers is macerated using methanol as a solvent with a ratio of 1: 4 w / v. There are two test methods used, namely the diffusion method for testing antibacterial activity and the dilution method for measuring the minimum inhibitory concentration (MIC). The results of phytochemical screening showed that the methanol extract of N. pubescens flowers contained phenolic compounds, saponins, and flavonoids. The results of the antibacterial activity test showed that the methanol extract of N.pubescens flowers was able to inhibit S. aureus (inhibition diameter 10 ± 0.29 mm) and E. coli (inhibitory diameter 10.2 ± 0.50 mm). The minimum inhibitory concentration of the methanol extract of N. pubescens flowers against S.aureus was 12.5% and against E. coli was 25%. It can be concluded that the methanol extract of N. pubescens flowers has antibacterial activityKeywords: Nymphaea pubescens, lotus flower, methanol extract, antibacterial

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