scholarly journals Uji Daya Hambat Sari Daun Alpukat (Persea americana mill) terhadap Pertumubuhan Escherichia coli

2017 ◽  
Vol 9 (2) ◽  
pp. 58-64
Author(s):  
Tuty Yuniarty ◽  
Lisfaresliana Hasjim
Keyword(s):  
Escherichia Coli ◽  
Pathogenic Bacteria ◽  
Leaf Extract ◽  
Inhibition Zone ◽  
Persea Americana ◽  
Clear Zone ◽  
Traditional Medicines ◽  
Experimental Laboratory ◽  
Escherichia Coli Bacteria ◽  
Static Group

Avocado leaves (Percea americana mill) are a part of avocado plants that have benefits as traditional medicines. Avocado leaves are potentially used as anti-diarrhea based on the content of chemicals contained therein, namely saponins, alkaloids, tannins, flavanoids, polyphenols, quercetin which are used to kill pathogenic bacteria, one of which is Escherichia coli. Escherichia coli is an opportunist germ that is commonly found in the human intestine as a normal flora. The purpose of this study was to determine the inhibition of avocado leaf extract on the growth of Escherichia coli bacteria. This type of research is an Experimental laboratory. The research design used in this study was static group comparison because this study was conducted to see differences in concentrations of 10%, 15%, 25%, 50% and 75% of avocado leaf extract in inhibiting the growth of Escherichia coli bacteria by looking at the clear zone formed. The results showed that at a concentration of 25%, 50% and 75% a clear zone (inhibition zone) was formed, whereas at concentrations of 10% and 15% no clear zone (inhibition zone) was formed. From the results of this study it can be concluded that avocado leaf extract can inhibit the growth of Escherichia coli at concentrations of 25%, 50% and 75%. Catatan PenerbitPolekkes Kemenkes Kendari menyatakan tetap netral sehubungan dengan klaim dari perspektif atau buah pikiran yang diterbitkan dan dari afiliasi institusional manapun.

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

PHARMACON ◽  
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

scholarly journals UJI EFEKTIVITAS ANTI BAKTERI EKSTRAK DAUN LEUNCA (SOLANUM NIGRUM) TERHADAP DAYA HAMBAT BAKTERI ESCHERICHIA COLI

2020 ◽  
Vol 3 (1) ◽  
pp. 11-16
Author(s):  
Firdaus Fahdi ◽  
Herviani Sari ◽  
Lisbet Saulina Lubis
Keyword(s):  
Escherichia Coli ◽  
Leaf Extract ◽  
Inhibition Zone ◽  
Solanum Nigrum ◽  
Diffusion Method ◽  
Antibacterial Effects ◽  
Disk Diffusion Method ◽  
Inhibitory Power ◽  
Escherichia Coli Bacteria ◽  
Chemical Contents

Antibacterial is a compound that can inhibit the growth of bacteria that can be used for the treatment of infections in humans. One of the bacteria that can cause interference with the system is the Escherichia coli bacteria, where the Escherichia coli bacteria is widely spread around us. The spread of the Escherichia coli bacteria can occur by direct contact (shaking hands, touching). Then passed on by mouth. Leunca leaves have chemical contents including alkaloids, flavonoids, saponins, tanins. The purpose of this study was to determine whether Leunca's leaf extract (Solanum nigrum) has antibacterial effects against the inhibitory power of Escherichia coli bacteria with a concentration of 50 mg/ml, 100 mg/ml, 150 mg/ml, 200 mg/ml, 250 mg/ml. The method of this study was the sample of Leunca leaf obtained from West Lumban Rau Village, Habinsaran Subdistrict, Toba Samosir Regency. Sample preparation was done by making thick extract with the maceration method. An anti-bacterial effectiveness test is done by the disk diffusion method. The results showed Leunca's leaf extract containing alkaloid compounds, flavonoids, saponins, tannins. As well as having antibacterial effectiveness against the inhibition of Escherichia coli bacteria. Average inhibition zone area concentration of 50 mg/ml = 6.1 mm, concentration of 100 mg/ml = 7.3, concentration of 150 mg/ml = 8.8 mm, concentration of 200 mg/ml = 10.8 mm, concentration of 250 mg/ml = 12.6 mm. Conclusion: Leunca (Solanum nigrum) Leaf Extract has antibacterial effects against the inhibitory power of Escherichia coli bacteria with a strong category.

scholarly journals UJI EFEKTIVITAS EKSTRAK BUAH KESEMEK (DYOSPIROS KAKI L.) SEBAGAI ANTIBAKTERI TERHADAP BAKTERI ESCHERICHIA COLI

2019 ◽  
Vol 19 (2) ◽  
pp. 260
Author(s):  
Therry Prosperita K. Wau ◽  
Diaz F. Izdihar ◽  
Katherine Gunawan ◽  
Yolanda Eliza Putri Lubis
Keyword(s):  
Escherichia Coli ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Disc Diffusion Method ◽  
Fruit Extract ◽  
Persimmon Fruit ◽  
Experimental Laboratory ◽  
Escherichia Coli Bacteria ◽  
Mountain Plants

Abstrak : Kesemek (Dyospyros kaki L.) merupakan buah yang berada di tanaman dataran tinggi (pegunungan). Dapat tumbuh dimana saja pada suhu rendah, kelembapan tinggi, intensitas matahari tidak 100% (teduh/mendung). Buah ini mempunyai kandungan senyawa yang memiliki potensi antimikroba yang menghambat pertumbuhan bakteri Escherichia coli. Penelitian ini bertujuan untuk mengetahui adanya efektifitas ekstrak kesemek terhadap pertumbuhan bakteri Escherichia coli pada konsentrasi 100%, 90%, 80%, 70%, 60%, dan 50%. Penelitian ini merupakan penelitian eksperimental laboratotium dengan metode difusi cakram.. Parameter yang diukur adalah besarnya zona hambat minimum dan zona hambat optimum ekstrak terhadap bakteri.  Hasil penelitian didapatkan ekstrak buah kesemek memiliki efektivitas antibakteri pada Escherichia coli, dimanazona hambat minimum rata-ratanya pada konsentrasi 70% (6,1 mm) dan zona hambat optimum rata-rata pada konsentrasi 100% (8,8 mm). Semakin tinggi konsentrasi ekstrak yang diberi maka semakin besar daya antibakterinya. Hasil ini menunjukan bahwa ekstrak buah kesemek memiliki efektivitas antibakteri yang lemah terhadap pertumbuhan bakteri Escherichia coli sesuai klasifikasi respon zona hambat bakteri.Kata kunci: Kesemek (Dyospyros kaki L.), antibakteri, Escherichia coli Abstract : Persimmon (Dyospyros kaki L.) is a fruit that is in highland (mountain) plants. Can grow anywhere at low temperatures, high humidity, the intensity of the sun is not 100% (shade / cloudy). This fruit contains compounds that have antimicrobial potential which inhibits the growth of Escherichia coli bacteria. This study aims to determine the effectiveness of persimmon extract on the growth of Escherichia coli bacteria at concentrations of 100%, 90%, 80%, 70%, 60%, and 50%. This study was an experimental laboratory with disc diffusion method. The parameters measured were the size of the minimum inhibition zone and the optimum zone of extract inhibition against bacteria. The results showed persimmon fruit extracts had antibacterial effectiveness in Escherichia coli, where the minimum inhibition zone was at a concentration of 70% (6.1 mm) and the optimum inhibition zone averaged at a concentration of 100% (8.8 mm). The higher the concentration of extract given, the greater the antibacterial power. These results indicate that persimmon fruit extract has a weak antibacterial effectiveness against the growth of Escherichia coli bacteria according to the classification of bacterial inhibitory zone responses.Keywords: Persimmon (Dyospyros kaki L.), antibacterial, Escherichia coli

scholarly journals Uji daya hambat ekstrak etanol daun srikaya (Annona squamosa) terhadap pertumbuhan bakteri Escherichia coli dan Staphylococcus aureus

2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Alberta Y.M. Tansil ◽  
Edward Nangoy ◽  
Jimmy Posangi ◽  
Robert A. Bara
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Leaf Extract ◽  
Inhibition Zone ◽  
Positive Control ◽  
Annona Squamosa ◽  
Diffusion Technique ◽  
Experimental Laboratory ◽  
Inhibition Zones ◽  
The Mean

Abstract: Srikaya leaf contains terpenoid, polyphenol, alkaloid, and flavonoid that can potentially be an antibacterial. This study was aimed to obtain the potency of srikaya leaf extract against Staphylococcus aureus (ATCC25923) and Escherichia coli (ATCC11229). This was an experimental laboratory study using the Kirby-Bauer modified well diffusion technique in the Phytochemistry and Microbiology Laboratory of MIPA Faculty at Sam Ratulangi University. Srikaya leaf extract was obtained by using ethanol maceration technique. The concentrations of the extract were as follows: 50%, 25%, and 12.5%. Ciprofloxacin was used as the positive control while CMC as the negative one. The results showed that CMC did not have any inhibition zone around the well. Ciprofloxacin showed the largest mean diameters of inhibition zones: 35.78 mm against E.coli and 36.55 mm against S.aureus. The mean diameters of inhibition zones of Srikaya leaf extract 50% were 9.13 mm against E.coli and 13.78 mm against S.aureus. The mean diameters of inhibition zones of Srikaya leaf extract 25% were 7.8 mm against E.coli and 13.55 mm agaisnt S.aureus. Meanwhile, the mean diameters of inhibition zones of srikaya leaf extract 12.5% were 7.05 mm against E.coli and 11.31mm agaimst S.aureus. Conclusion: Srikaya leaf extract could potentially inhibit the growth of S.aureus and E.coli. The srikaya leaf extract could inhibit S.aureus more effectively than E.coli.Keyword: antibacterial, srikaya leaf extract, Staphylococcus aureus, Escherichia coli  Abstrak: Daun Srikaya mengandung terpenoid, fenolik, alkaloid, dan flavonoid yang berpotensi sebagai antibakteri. Penelitian ini bertujuan untuk mengetahui uji daya hambat ekstrak daun srikaya terhadap Staphylococcus aureus (ATCC25923) dan Escherichia coli (ATCC11229). Jenis penelitian ialah eksperimental laboratorium dengan modifikasi Kirby-Bauer sumuran di Laboratorium Fitokimia dan Mikrobiologi Fakultas MIPA Universitas Sam Ratulangi. Ekstrak daun srikaya diperoleh dari proses maserasi dengan etanol 96%. Konsentrasi ekstrak kental yang digunakan ialah 50%, 25%, 12,5%. Siprofloksasin digunakan sebagai kontrol positif dan CMC sebagai kontrol negatif. Hasil penelitian mendapatkan CMC tidak mempunyai zona hambat. Siprofloksasin memiliki diameter zona hambat yang paling besar. Rerata diameter zona hambat yang dihasilkan oleh siprofloksasin ialah 35,78 mm terhadap bakteri E.coli dan 36,55 mm terhadap S.aureus. Rerata diameter zona hambat ekstrak daun srikaya 50% ialah 9,13 mm terhadap E.coli dan 13,78 mm terhadap bakteri S.aureus. Rerata diameter zona hambat ekstrak daun srikaya 25% ialah 7,8 mm terhadap E.coli dan 13,25 mm terhadap S.aureus. Rerata diameter zona hambat ekstrak daun srikaya 12,5% ialah 7,05 mm terhadap E.coli dan 11,31 mm terhadap S.aureus. Simpulan: Ekstrak daun srikaya berpotensi memiliki efek daya hambat terhadap pertumbuhan bakteri S.aureus dan E.coli. Daya hambat ekstrak daun srikaya lebih besar terhadap S.aureus daripada E.coli.Kata kunci: antibakteri, ekstrak daun srikaya, Staphylococcus aureus, Escherichia coli

scholarly journals Fitokimia Dan Aktivitas Antibakteri Dari Daun KAF(Chisocheton sp. (C. DC) HARMS)

Jurnal MIPA ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 42
Author(s):  
Florentin Natalia Melsadalam ◽  
Dewa Gede Katja ◽  
Meiske S. Sangi
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Secondary Metabolites ◽  
Ethyl Acetate ◽  
Leaf Extract ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Inhibitory Zone ◽  
Escherichia Coli Bacteria

Telah dilakukan penelitian yang bertujuan untuk mengidentifikasi senyawa metabolit sekunder  dari ekstrak daun kaf menggunakan tiga jenis pelarut yakni n-heksan, etil asetat, dan metanol. Ekstrak yang diperoleh diuji aktivitas antibakterinya dengan metode difusi yang menggunakan bakteri Staphylococcusaureus dan Escherichia coli. Dari hasil pengujian fitokimia, ketiga ekstrak tersebut menunjukan bahwa sampel mengandung senyawa; alkaloid, saponin, steroid, flavonoid dan tanin. Pengujian aktivitas antibakteri  dengan metode difusi menunjukan hasil yang paling tinggi aktivitas antibakteri adalah  estrak etil asetat dengan zona hambat 35,75 mm terhadap bakteri  Staphylococcus aureus, sedangkan pada ekstrak metanol memiliki zona hambat 23,75 mm terhadap bakteri Escherichia coliResearch has been carried out aimed at identifying secondary metabolites of kaf leaf extract using three types of solvents, namely n-hexane, ethyl acetate, and methanol.The obtained extracts were tested for antibacterial activity by diffusion method using Staphylococcus aureus and Escherichia coli bacteria. From the results of phytochemical testing, the three extracts showed that the sample contained compounds; alkaloids, saponins, steroids, flavonoids and tannins. Antibacterial activity testing with diffusion method showed the highest antibacterial activity was estracethyl ethyl acetate with 35.75 mm inhibition zone against Staphylococcus aureus bacteria, whereas methanol had 23.75 mm inhibitory zone against Escherichia coli bacteria

UJI AKTIVITAS ANTIBAKTERI DARI EKSTRAK ETANOL DAUN PERIA LAUT (Colubrina Asiatica L.) TERHADAP BAKTERI STAPHYLOCOCCUS AUREUS DAN ESCHERICHIA COLI

2019 ◽  
Vol 2 (1) ◽  
pp. 14-18
Author(s):  
Firdaus Fahdi ◽  
Harwitavia Harwitavia ◽  
Herviani Sari
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Leaf Extract ◽  
Ethanol Extract ◽  
Inhibition Zone ◽  
Positive Control ◽  
Negative Control ◽  
Antibiotic Drugs ◽  
Escherichia Coli Bacteria

The discovery of new antibiotic drugs is getting more and more reactive. The plant of the peria laut leaf is one of the drugs that is often used as a traditional medicine and contains bioactive compounds of polyphenols, flavonoids, and saponins, which can inhibit antibacterial growth. Purpose of this study was to determine the antibacterial activity of ethanol extract of peria laut leaves (Colubrina asiatica L.) against Staphylococcus aureus and Escherichia coli bacteria. Method the experimental, of the sample used was concentrated marine peria laut leaf extract of 25mg/ml, 50mg/ml, 75mg/ml, 100mg/ml, 200mg/ml, 300mg/ml, 400mg/ml, and 500mg/ml, positive control of amoxicillin tablet 500 mg, negative control of dimethylsulfoxide with the method of disc diffusion testing using media Nutrient Agar. Results the showed thet the peria laut leaf extract positively contained bioactive alkaloid compounds, flavonoids, saponins, steroids, and tannins, and had inhibitory effects on Staphylococcus aureus and Escgerichia coli bacteria with various concentrations which had been tested on the average area of the highest inhibition zone of 18,6 mm in Staphylococcus aureus bacteria, and 10,2 mm in Escherichia coli bacteria. Conclusion peria laut leaf extract (Colubrina asiatica L.) has antibacterial activity against Staphylococcus aureus and Escherichia coli bacteria in the most inhibitory zone at a concentration of 500mg/ml with a diameter of 18,6 in Staphylococcus aureus bacteria and 10,2 in Escherichia coli.

scholarly journals The Effectiveness of Giving Natural Honey as a Bactericide Against the Growth of Escherichia coli Bacteria

2021 ◽  
Vol 11 (3) ◽  
pp. 183-187
Author(s):  
Mulyadi Djojosaputro ◽  
Moskwadina Gultom
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Effect ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Antibacterial Effects ◽  
Clear Zone ◽  
Activity Test ◽  
Escherichia Coli Bacteria ◽  
Natural Honey

Honey is one of the natural treatments with antibacterial effects such as hydrogen peroxide, low pH and short water activity that may inhibit bacterial growth. This study aimed to determine the activity of honey as antibacterial to bacteria Escherichia coli. Antibacterial activity test was done in vitro through diffusion method by using disk disc in MHA media then measuring the diameter of a clear zone that inhibition zone form growth of Escherichia coli bacteria and scaled it millimetre unit. This research was done in the laboratory of the Faculty of Medicine Universitas Kristen Indonesia. The concentrations used are 10%, 30%, 50%, 70%, 100% by using sterile equates as honey diluents. The control used was chloramphenicol, the results obtained at a concentration of 10% with a zone of 7.6 mm inhibition of honey had been able to inhibit the growth of Escherichia coli bacteria, and the optimum concentration was 100% with a zone of 24.5 mm. This test showed that natural honey could inhibit bacteria, which conclude that honey might be used as alternative medicine in society. Keywords: Antibacterial effect, Escherichia coli, honey

scholarly journals Pengaruh Variasi Konsentrasi Ekstrak Daun Sambung Nyawa terhadap Zona Hambat Bakteri Escherichia Coli Metode Difusi

2019 ◽  
Vol 2 (2) ◽  
pp. 44
Author(s):  
Amalia Selviani ◽  
Sugito Sugito ◽  
Sutriswanto Sutriswanto
Keyword(s):  
Escherichia Coli ◽  
Leaf Extract ◽  
Inhibition Zone ◽  
Simple Linear Regression ◽  
Chemical Content ◽  
Family Based ◽  
Escherichia Coli Bacteria ◽  
Barrier Zone ◽  
Asteraceae Family ◽  
Test Result

Abstract: Gynura procumbens plants or often called Gynura procumbens (Lour.) Merr is a plant belonging to the Asteraceae family. Based on the results of phytochemical screening performed, the chemical content contained in the leaves of Gynura procumbens (Lour).Merr is phenol, saponin and steroid. Phenol and saponin each have a mechanism as an antibacterial. The purpose of this study was to determine the inhibition zone of Gynura procumbens extract, concentration of 10%, 20%, 30%, 40% dan 50% to Escherichia coli bacteria on hook moutellic agar and to know the value of Resistant, Intermediate and Sensitive from leaf extract of Gynura procumbens (Lour).Merr against bacterial inhibition zone of Escherichia coli, as well as to analyze the effect of concentration variation of Gynura procumbens (Lour).Merr leaf extract to the inhibitory zone of Escherichia coli bacteria. The research method used is experimental method. Based on the result of the research, it is known that Gynura procumbens (Lour).Merr leaf extract have inhibition zone to Escherichia coli bacteria with the width of the lowest barrier zone of 6 mm at 10% concentration while the width of the highest resistance zone is 20 mm at concentration 50% with 30 mm control. From the statistical test result using Simple Linear Regression, the result of  p(0,000) at 95% confdence level (p = 0,000 <α (0,05) meaning that there is influence of concentration of Gynura procumbens (Lour).Merr leaf extract to zone inhibit of Escherichia coli bacteria diffusion method.Abstrak: Tanaman sambung nyawa atau sering disebut dengan Gynura procumbens (Lour.) Merr merupakan tanaman yang termasuk dalam famili Asteraceae. Berdasarkan hasil skrining ftokimia yang dilakukan, kandungan kimia yang terdapat di dalam daun sambung nyawa adalah fenol, saponin dan steroid. Senyawa fenol dan saponin memiliki mekanisme sebagai antibakteri. Penelitian ini bertujuan untuk mengetahui zona hambat dari ekstrak daun sambung nyawa konsentrasi 10%, 20%, 30%,40% dan 50% terhadap bakteri Escherichia coli pada media muller hinton agar dan untuk mengetahui nilai Resisten, Intermediet dan Sensitif dari ekstrak daun sambung nyawa (Gynura procumbens (Lour).Merr) terhadap zona hambat bakteri Escherichia coli serta menganalisis pengaruh variasi konsentrasi ekstrak daun sambung nyawa (Gynura procumbens (Lour).Merr) terhadap zona hambat bakteri Escherichia coli. Metode penelitian yang digunakan adalah metode ekperimental semu. Berdasarkan hasil penelitian diketahui bahwa ekstrak daun sambung nyawa mempunyai zona hambat terhadap bakteri Escherichia coli dengan luas zona hambatan terendah 6 mm pada konsentrasi 10% sedangkan luas zona hambatan tertinggi 20 mm pada konsentrasi 50% dengan kontrol pembanding sebesar 30 mm. Dari hasil uji statistik menggunakan Regresi Linier Sederhana, didapatkan hasil p (0,000) pada tingkat kepercayaan 95% (p=0,000 < α (0,05) yang berarti ada pengaruh variasi konsentrasi ekstrak daun sambung nyawa terhadap zona hambat bakteri Escherichia coli metode difusi.

scholarly journals Aktivitas Antibakteri Ekstrak Etanol Daun Sukun (Artocarpus altilis) Terhadap Bakteri Staphylococcus aureus Dan Escherichia coli

2020 ◽  
pp. 10-20
Author(s):  
Fuan Maharani Fiana ◽  
Naelaz Zukhruf Wakhidatul Kiromah ◽  
Ery Purwanti
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Leaf Extract ◽  
Ethanol Extract ◽  
Average Diameter ◽  
Inhibition Zone ◽  
Positive Control ◽  
Negative Control ◽  
Artocarpus Altilis ◽  
Escherichia Coli Bacteria

Diarrhea is caused by bacterial infections, especially Staphylococcus aureus and Escherichia coli. The breadfruit leaves (Artocarpus altilis) are known contain flavonoid compounds, alkaloids, saponins, and tannins which can be used as antibacterial. This research was conducted to determine the ethanol extract of the breadfruit leaves against Staphylococcus aureus and Escherichia coli bacteria. The manufacture of the breadfruit leaf extract was using a maceration method with 96% ethanol solvent. The result of the tube test and the TLC test was positive, the breadfruit leaf extract containing flavonoids and tannins which have potential as antibacterial. The antibacterial test was carried out using the disc diffusion method (Kirby-Bauer test) against Staphylococcus aureus and Escherichia coli bacteria incubated for 1 x 24 hours. The extract concentrations tested were 10%, 15% and 20%. The positive control was using erythromycin antibiotics and the negative control was using aquades. The identification of the chemical content of plants is done by tube test and the TLC test. The results of incubation of the breadfruit leaf extract with concentrations of 10%, 15% and 20% against Staphylococcus aureus bacteria, the average diameter of inhibitory zones respectively were 3.67, 3.50 and 2.67 mm with the positive control diameter of inhibition zone was 18.5 mm, the negative control diameter of inhibition zone was 0 mm. The results of incubation of the breadfruit leaf extract with concentrations of 10%, 15% and 20% against Escherichia coli bacteria, the average diameter of inhibitory zones respectively were 5.33, 3.17 and 3.33 mm with the positive control inhibition zone diameter of 28.5 mm and the negative control of inhibition zone diameter of 0 mm. The activity of ethanol extract of the breadfruit leaves against the Staphylococcus aureus and Escherichia coli bacteria is included in the weak category.

scholarly journals Uji daya hambat ekstrak daun lidah mertua (Sansevieriae trifasciata folium) terhadap pertumbuhan bakteri Escherichia coli dan Streptococcus sp

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Brily Lombogia ◽  
Fona Budiarso ◽  
Widdhi Bodhi
Keyword(s):  
Escherichia Coli ◽  
Laboratory Study ◽  
Leaf Extract ◽  
Ethanol Extract ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Antibacterial Effects ◽  
E Coli ◽  
Experimental Laboratory ◽  
Inhibition Zones

Abstract: Mother in law’s tongue plant has some active compounds inter alia saponin, polyphenol, and flavonoid that have antibacterial effects. This study aimed to identify whether the antibacterial effects of mother in law’s tongue leaf (Sansevieria Trifasciata) towards the growth of Escherichia coli and Streptococcus sp. This was an experimental laboratory study. The concentrations of mother in law’s tongue leaf extract were tested with well methods, as follows: 5%, 10%, 20%, and 40%. The results showed that this extract at concentration of 5%, 10%, 20%, and 40% could inhibit the growth of E. coli with the average diameters of inhibition zones as follows: 7.8 mm, 13 mm, 14.5 mm, and 17.3 mm meanwhile of Streptococcus sp. with the average diameters of inhibition zones, as follows: 4.6 mm, 9.6 mm, 13 mm, and 15.3 mm. Conclusion: Ethanol extract of mother in law’s tongue leaves (Sansevieria Trifasciata) has antibacterial activities against the growth of E. coli and Streptococcus sp. The higher the concentration is, the broader the inhibition zone is.Keywords: Sansevieriae trifasciata folium, inhibition zone, E. coli, Streptococcus sp. Abstrak: Tanaman Lidah Mertua (Sansevieria Trifasciata) memiliki senyawa aktif yaitu Saponin, Polifenol, dan Flavonoid yang mampu bekerja sebagai antibakteri. Penelitian ini bertujuan untuk mengetahui ada tidaknya daya hambat ekstrak daun lidah mertua (Sansevieria trifasciata) terhadap pertumbuhan bakteri E. coli, dan Streptococcus sp. Jenis penelitian ini eksperimental laboratorik. Kadar ekstrak etanol daun lidah mertua (Sansevieria trifasciata) yang diujikan dengan metode sumuran yaitu 5%, 10%, 20%, dan 40%. Ekstrak etanol daun lidah mertua (Sansevieria trifasciata) dengan konsentrasi 5%, 10%, 20%, dan 40% dapat menghambat pertumbuhan bakteri E. coli dengan rerata diameter zona hambat masing-masing yaitu 7,8 mm, 13 mm, 14,5 mm, dan 17,3 mm sedangkan Streptococcus sp. dengan masing-masing rerata diameter zona hambat yaitu 4,6 mm, 9,6 mm, 13 mm, dan 15,3 mm. Simpulan: Ekstrak etanol daun lidah mertua (Sansevieria trifasciata) mempunyai aktifitas antimikroba terhadap pertumbuhan bakteri E. coli dan Streptococcus sp, dimana makin tinggi konsentrasi ekstrak daun lidah mertua, makin luas zona jernih pada media kultur bakteri E. coli dan Streptococcus sp. Kata kunci: Sansevieriae trifasciata folium, daya hambat, E. coli, Streptococcus sp.

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