scholarly journals OPTIMATION OF ANTIMICROBIAL SUBSTANCE PRODUCTION IN CELL FREE EXTRACT FROM THERMOPHYLIC BACTERIA FERMENTATION AFTER MERAPI ERRUPTION

2016 ◽  
Vol 4 (2) ◽  
pp. 140
Author(s):  
Evy Yulianti ◽  
Anna Rakhmawati ◽  
Kartika Ratna Pertiwi
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Salt Concentration ◽  
Inhibition Zone ◽  
Antimicrobial Compounds ◽  
Cell Free Extract ◽  
Antimicrobial Substance ◽  
E Coli ◽  
Paper Disk ◽  
Fermentation Period

The aims of this study was to investigate the effect of medium with different pH (6,7,9), salt concentration (0,5; 1; 2 %) and fermentation periode (24 and 48 hr) to the antimicrobial activity of cell free extract to three pathogens, Eschericia coli, Staphylococcus aureus, and Candida albican. This study consists of antimicrobial compounds production with different medium and continued by antimicrobial tested to fungi and bacterial pathogens Eschericia coli, Staphylococcus aureus, and Candida albican by Kirby Bauer  method with paper disk. Different salt concentration, pH and fermentation periode affected the  antimicrobial activity potency of cell free extract yielded by thermophylic bacteria. Treatment which yielded CFE with the best antimicrobial activity was treatment with 24 hr fermentation, pH 7 and salt concentration 2% to S aureus and pH 6 salt concentration 1% to E coli. Cell free extract had no potency as antifungi to Candida albicans except CFE yielded by thermophylic bacteria fermented in medium with pH 7 and salt concentration 1% in 24 hr with inhibition zone index 1,17. Keywords: cell free extract, antimicrobial, pH, salt concentration, fermentation period

scholarly journals Inhibitory activity of crude bacteriocin produced by lactic acid bacteria isolated from dadih against Listeria monocytogenes

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Usman Pato ◽  
YUSMARINI YUSUF ◽  
SHANTI FITRIANI ◽  
NIA NAIDYA JONNADI ◽  
MIMI SRI WAHYUNI ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Antimicrobial Compounds ◽  
Disk Diffusion Method ◽  
Food Borne ◽  
Paper Disk ◽  
Natural Preservatives

The use of natural preservatives called bacteriocin derived from lactic acid bacteria (LAB) is one way of preventing food from being contaminated by pathogenic microorganisms such as L. monocytogenes (LM). The aims of this study were to evaluate the ability of LAB isolated from dadih to inhibit the growth of LM and to obtain the antimicrobial components that play a role in inhibiting the growth of LM. The antimicrobial activity of the supernatant obtained from 12 strains of dadih LAB was determined using the paper disk diffusion method. The results showed that the supernatant from the 12 LAB strains was able to inhibit the growth of LM with various inhibition zones. However, out of the 12 LABs, only 9 strains were found to have an inhibition zone of more than 3.5 mm.  The antimicrobial compounds of 9 strains were tested and it was found that the antimicrobial compounds of strains R-8, R-14 and R-49 were derived from lactic acid. In addition, 6 strains namely R-43, R-32, R-19, R-55, R-45 and R-41 were derived from bacteriocin based on their sensitivity to pH, heat and enzyme treatments. Crude bacteriocin derived from 6 LAB strains inhibited the growth of LM, and the highest antimicrobial activity was obtained in Streptococcus faecalis subsp. liquefaciens R-55 with an average inhibition zone of 13.87 mm. Bacteriocin produced by strain R-55 can be used as natural preservatives for the prevention of food-borne disease caused by LM.

scholarly journals Optimization of Medium Fermentation for Production of Antimicrobial Compounds by Endofit Bacteria Andalas Plant (Morus macroura Miq.) B.J.T.A-6 Isolate

BioScience ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 79
Author(s):  
Nada Nafion ◽  
Dwi Hilda Putri ◽  
Irdawati Irdawati
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Endophytic Bacteria ◽  
Bacterial Resistance ◽  
Inhibition Zone ◽  
Fermentation Medium ◽  
Luria Bertani ◽  
Antimicrobial Compounds ◽  
Luria Bertani Broth ◽  
The World

Cases of bacterial resistance to antibiotics are discussed with serious problems in the world of health. New antimicrobial compounds are needed which are more effective in treating infectious diseases. Isolate B.J.T.A-6 is an endophytic bacteria from Andalas plants (Morus macroura Miq.) which is known to be able to produce antimicrobial active compounds. Antimicrobial compounds can be produced by growing them on fermented media. The purpose of this study was to optimize the medium fermentation of Andalas endophytic bacteria of B.J.T.A-6  isolates in producing antimicrobial compounds. While medium fermentation is Nutrient Broth (NB), Muller Hinton (MH), and Luria Bertani Broth (LB). Antimicrobial activity tests were carried out by means of diffusion. The parameters used were the diameter of the inhibition zone against Staphylococcus aureus around the disc paper. The profile of medium fermentation optimization was analyzed statistically. The results showed that B.J.T.A-6  isolates could inhibit the highest growth of S. aureus by using LB fermentation medium. 

scholarly journals UJI AKTIVITAS ANTIMIKROBA EKSTRAK DAN FRAKSI SPONS Phyllospongia lamellosa DARI PERAIRAN TUMBAK, MINAHASA TENGGARA TERHADAP PERTUMBUHAN MIKROBA Escherichia coli, Staphylococcus aureus DAN Candida albicans

PHARMACON ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 815
Author(s):  
Kartini Ratu ◽  
Herny E. I. Simbala ◽  
Henki Rotinsulu
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Average Value ◽  
Activity Test ◽  
Paper Disk ◽  
Agar Diffusion Method

ABSTRACT Sponges are a component of coral reef biota. These sea animals are known to contain compounds that have the potential to be developed in the field of medicine, including as an antimicrobial. This study aims to determine the antimicrobial activity of Phyllospongia lamellosa sponge against the growth of Staphylococcus aureus, Escherichia coli and Candida albicans collected in the waters of Tumbak, Posumaen District, Southeast Minahasa. The antimicrobial activity test was carried out by agar diffusion method. The results showed that the extract and fraction of Phyllospongia lamellose had antimicrobial activity seen in the inhibition zone formed around the paper disk against the test microbes. Ethanol extrack and fraction from Phyllospongia lamellosa sponge showed the greatest antimicrobial activity against Candida albicans with an average value of 13,33 mm was categorized as strong , than in Staphylococcus aureus with an average value of 13 mm is categorized as strong and on Escherichia coli 11 mm categorized as strong. Keywords  :Phyllospongia lamellosa, antimicrobial activity, Escherichia coli, Staphylococcus aureus, Candida albicans ABSTRAK Spons merupakan salah satu komponen biota penyusun terumbu karang.  Hewan laut ini diketahui mengandung senyawa- senyawa yang berpotensi untuk dikembangkan dalam bidang pengobatan, diantaranya sebagai antimikroba. Penelitian ini bertujuan untuk mengetahui aktivitas antimikroba spons Phyllospongia Lamellosa terhadap pertumbuhan Staphylococcus aureus, Escherichia coli dan Candida albicans yang diambil pada perairan Tumbak Kecamatan Posumaen, Minahasa Tenggara. Uji aktifitas antimikroba dilakukan dengan metode difusi agar. Hasil penelitian menunjukkan bahwa ekstrak dan fraksi spons Phyllospongia lamellose memiliki aktifitas antimikroba dilihat zona hambat yang terbentuk disekitar cakram kertas terhadap mikroba uji. Ekstrak etanol dan fraksi dari Spons Phyllospongia lamellosa menunjukkan aktivitas antimikroba paling kuat terhadap candida albicans dengan nilai rata-rata 13,33 mm dikategorikan kuat, kemudian pada Staphylococcus aureus dengan nilai rata-rata 13 mm dikategorikan kuat, dan pada Escherichia coli 11 mm dikategorikan kuat. Kata Kunci :  Phyllospongia lamellosa, aktivitas antimikroba, Escherichia coli, Staphylococcus aureus, Candida albicans

scholarly journals DAYA HAMBAT EKSTRAK ETANOL Schismatoglottis sp. TERHADAP BAKTERI Staphylococcus aureus dan Escherichia coli

2015 ◽  
Vol 17 (1) ◽  
pp. 149
Author(s):  
Fahri Bian ◽  
Febby E.F. Kandou ◽  
Marhaenus J. Rumondor
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Ethanol Extract ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Disk Diffusion Method ◽  
Inhibition Zone Diameter ◽  
E Coli ◽  
Zone Diameter ◽  
Paper Disk

DAYA HAMBAT EKSTRAK ETANOL Schismatoglottis sp. TERHADAP BAKTERI Staphylococcus aureus dan Escherichia coliABSTRAK Penelitian ini bertujuan untuk mengetahui daya hambat ekstrak etanol daun Schismatoglottis sp. terhadap bakteri Staphylococcus aureus dan Escherichia coli. Daya hambat ekstrak etanol Schismatoglottis sp. terhadap bakteri menggunakan metode Kirby-Bauer, yaitu metode difusi dengan cakram kertas. Ekstrak etanol Schismatoglottis sp. menghambat pertumbuhan S. aureus pada konsentrasi 60% dan 90% dengan diameter zona hambat 16,10 mm dan 31,33 mm serta  terhadap E. coli pada konsentrasi 30%, 60%, dan 90% dengan diameter zona hambat berturut-turut 11,72 mm, 16,38 mm, dan  29,27 mm. Berdasarkan hasil penelitian, dapat disimpulkan bahwa ekstrak etanol Schismatoglottis sp. terhadap S. aureus pada konsentrasi 60% dan 90% masing-masing memiliki kekautan antibakteri termasuk kategori kuat dan sangat kuat, sedangkan terhadap E. coli pada konsentrasi 30% dan 60%, memiliki kekuatan antibakteri kategoti kuat sedangkan pada konsentrasi 90% memiliki kekuatan antibakteri kategori sangat kuat. Kata kunci : Schismatoglottis sp, Antibakteri, Staphylococcus aureus, Escherichia coli THE INHIBITION OF ETHANOL EXTRACT OF Schismatoglottis sp. AGAINST BACTERIA Staphylococcus aureus AND Escherichia coli. ABSTRACT This study aimed to determine the inhibition of ethanol extract of leaves Schismatoglottis sp. against S. aureus and E. coli. Inhibition of the ethanol extract of Schismatoglottis sp. against to bacterial using the Kirby-Bauer method, is the paper disk diffusion method. Schismatoglottis sp. ethanol extract inhibit the growth of S. aureus at a concentration of 60% and 90% inhibition zone with a diameter of 16.10 mm and 31.33 mm and against E. coli at a concentration of 30%, 60%, and 90% with inhibition zone diameter respectively 11, 72 mm, 16.38 mm and 29.27 mm. Based on the results, it can be concluded that the ethanol extract Schismatoglottis sp. against S. aureus at concentrations of 60% and 90% respectively have antibacterial kekautan categorized as strong and very strong, while against E. coli at a concentration of 30% and 60%, have a strong kategoti antibacterial strength while at a concentration of 90% has antibacterial strength very strong category. Keywords: Schismatoglottis sp, antibacterials, Staphylococcus aureus, Escherichia coli.

UJI AKTIVITAS ANTIMIKROBA DARI JAMUR LAUT YANG BERASOSIASI DENGAN ALGA Halimeda opuntia

PHARMACON ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 41
Author(s):  
Ridwan Sukardi Djakatara ◽  
Defny S Wewengkang ◽  
Henki Rotinsulu
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Marine Fungi ◽  
Marine Ecosystem ◽  
Antimicrobial Compounds ◽  
E Coli ◽  
The World

ABSTRACT Algae is a place of life for various microorganisms symbiosis with it, one of which is fungi. Marine fungi are known to have an important contribution to the marine ecosystem. Many types of marine fungi that have been isolated and are known to produce a number of antimicrobial compounds were become a new choice in the world of health. This study aims to determine the antimicrobial activity of isolates fungi which associated with Halimeda opuntia algae collected from the Bay of Manado against Staphylococcus aureus, Escherichia coli, and Candida albicans. The results showed extracts of fungi that were associated with algae Halimeda opuntia did not possesed antimicrobial activity against S. aureus and E.coli and C. albicans. Keywords: Antimicrobials, marine fungi, Halimeda opuntia ABSTRAK Alga merupakan tempat hidup berbagai mikroorganisme yang bersimbiosis dengannya, salah satunya ialah jamur. Jamur laut diketahui memiliki kontribusi yang penting bagi ekosistem laut. Banyak jenis jamur laut yang telah diisolasi dan diketahui menghasilkan sejumlah senyawa antimikroba yang kini menjadi pilihan baru di dunia kesehatan. Penelitian ini bertujuan untuk mengetahui adanya aktivitas antimikroba dari isolat jamur yang berasosiasi dengan alga Halimeda opuntia yang diperoleh dari Teluk Manado terhadap bakteri  Staphylococcus aureus, Escherichia coli, dan jamur Candida albicans. Hasil penelitian menunjukkan ekstrak dari jamur yang berasosiasi dengan alga Halimeda opuntia tidak memiliki aktivitas antimikroba terhadap bakteri S. aureus dan E. coli dan jamur C. albicans. Kata kunci : Antimikroba , jamur laut , Halimeda opuntia

scholarly journals IN VITRO ANTIMICROBIAL ACTIVITY EVALUATION FOR DIFFERENT PHARMACEUTICAL DOSAGE FORMS OF CIPROFLOXACIN IN ADEN-YEMEN

2020 ◽  
Vol 1 (2) ◽  
pp. 93-99
Author(s):  
Wafa F. S. Badulla ◽  
Yafea S. T. Al-Omary ◽  
Khaled Saeed Ali
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Inhibition Zone ◽  
Dosage Forms ◽  
Diffusion Method ◽  
Eye Drops ◽  
Pharmaceutical Dosage Forms ◽  
Low Concentration ◽  
E Coli ◽  
Post Marketing Surveillance

Ciprofloxacin (CIP) is classified as a second-generation fluoroquinolone structurally similar to nalidixic acid. It is a widely used antibiotic to treat different types of bacterial infections. The present study was carried out to evaluate the antimicrobial activity of three different dosage forms of CIP [tablets (Tab coded I, II, III), CIP infusion (Infusion coded I, II, III) and CIP eye drop (Eyedrop coded I, II, III)]. Three most commonly prescribed and dispensed brands for each dosage form were selected. All studied brands were within their shelf life. All brands examined by spectroscopy and the quantity of the active ingredients was with the permitted limits of British pharmacopeia (95-105%). The disk diffusion method was used to evaluate the antimicrobial activity of CIP against E. coli and Staphylococcus Aureus. The highest inhibition zone was at low concentration against E. coli, by Tab-II, Tab-I, and Tab-III tablets respectively. While in the case of infusion, the Infusion-III showed the highest inhibition zone, followed by Infusion-I and Infusion-II. In the case of Staphylococcus Aureus, all Tab I, II, and III have similar potency. At low concentration, Infusion II, III indicated similar while Infusion I had lower potency. However, all brands had slightly higher potency over the standard. All brands of eye drops showed nearly similar potencies against Staphylococcus Aureus with a slight superiority of Eyedrop-I over Eyedrop-II then Eyedrop-III in the highest concentration. All the brands of eye drops showed antimicrobial activity slightly lower than standard. Post-marketing surveillance is an essential issue to distinguish poor-quality medicines. The current study revealed that the marketed CIP pharmaceutical dosage forms showed reasonable antimicrobial activity except for the eyedrops dosage forms which showed slightly lower inhibition zone in comparison to standard

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

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.

scholarly journals Highlighting the Biotechnological Potential of Deep Oceanic Crust Fungi through the Prism of Their Antimicrobial Activity

Marine Drugs ◽  
2021 ◽  
Vol 19 (8) ◽  
pp. 411
Author(s):  
Maxence Quemener ◽  
Marie Dayras ◽  
Nicolas Frotté ◽  
Stella Debaets ◽  
Christophe Le Meur ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Oceanic Crust ◽  
Gene Clusters ◽  
Multidrug Resistant ◽  
Antimicrobial Activities ◽  
Antimicrobial Compounds ◽  
Human Pathogens ◽  
Biotechnological Potential ◽  
Fungal Isolates

Among the different tools to address the antibiotic resistance crisis, bioprospecting in complex uncharted habitats to detect novel microorganisms putatively producing original antimicrobial compounds can definitely increase the current therapeutic arsenal of antibiotics. Fungi from numerous habitats have been widely screened for their ability to express specific biosynthetic gene clusters (BGCs) involved in the synthesis of antimicrobial compounds. Here, a collection of unique 75 deep oceanic crust fungi was screened to evaluate their biotechnological potential through the prism of their antimicrobial activity using a polyphasic approach. After a first genetic screening to detect specific BGCs, a second step consisted of an antimicrobial screening that tested the most promising isolates against 11 microbial targets. Here, 12 fungal isolates showed at least one antibacterial and/or antifungal activity (static or lytic) against human pathogens. This analysis also revealed that Staphylococcus aureus ATCC 25923 and Enterococcus faecalis CIP A 186 were the most impacted, followed by Pseudomonas aeruginosa ATCC 27853. A specific focus on three fungal isolates allowed us to detect interesting activity of crude extracts against multidrug-resistant Staphylococcus aureus. Finally, complementary mass spectrometry (MS)-based molecular networking analyses were performed to putatively assign the fungal metabolites and raise hypotheses to link them to the observed antimicrobial activities.

scholarly journals Antimicrobial activity of honeys from two stingless honeybee species and Apis mellifera (Hymenoptera: Apidae) against pathogenic microorganisms

2014 ◽  
Vol 44 (2) ◽  
pp. 287-290 ◽  
Author(s):  
Carolinie Batista Nobre da Cruz ◽  
Fabio Alessandro Pieri ◽  
Gislene Almeida Carvalho-Zilse ◽  
Patrícia Puccinelli Orlandi ◽  
Carlos Gustavo Nunes-Silva ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Apis Mellifera ◽  
Antimicrobial Agents ◽  
Dilution Method ◽  
Agar Dilution Method ◽  
Therapeutic Approaches ◽  
E Coli ◽  
Agar Dilution ◽  
Amazonas State

Honeys are described possessing different properties including antimicrobial. Many studies have presented this activity of honeys produced by Apis mellifera bees, however studies including activities of stingless bees honeys are scarce. The aim of this study was to compare the antimicrobial activity of honeys collected in the Amazonas State from Melipona compressipes, Melipona seminigra and Apis mellifera against Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Chromobacterium violaceum, and Candida albicans. Minimum inhibitory concentrations were determined using the agar dilution method with Müller-Hinton agar (for bacteria) or Saboraud agar (for yeast). Staphylococcus aureus and E. faecalis were inhibited by all honeys at concentrations below 12%, while E. coli and C. violaceum were inhibited by stingless bee honeys at concentrations between 10 and 20%. A. mellifera honey inhibited E. coli at a concentration of 7% and Candida violaceum at 0.7%. C. albicans were inhibited only with honey concentrations between 30 and 40%. All examined honey had antimicrobial activity against the tested pathogens, thus serving as potential antimicrobial agents for several therapeutic approaches.

scholarly journals Antibacterial activity of ginger extracts on bacteria isolated from digestive tract infection patients attended Muhoza Health Center

2020 ◽  
Vol 11 (2) ◽  
pp. 35-41
Author(s):  
Callixte Yadufashije ◽  
Adolyne Niyonkuru ◽  
Emanuel Munyeshyaka ◽  
Sibomana Madjidi ◽  
Joseph Mucumbitsi
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Tract Infection ◽  
Health Center ◽  
Digestive Tract ◽  
Inhibition Zone ◽  
Ginger Extract ◽  
E Coli ◽  
Shigella Spp ◽  
Stool Samples

Background: Ginger (Zingiber officinale) has been used for long time due to its potential antimicrobial activity against diversity of microbial pathogens. Aims and Objectives: The study was carried out to investigate the bacteria pathogens found in digestive tract infections and assess antimicrobial activities of ginger extract to identified bacteria. Materials and Methods: Bacteriological studies were carried out on stool samples from 30 patients attending Muhoza health center. Different types of bacteria were isolated from stool samples of digestive tract infection patients by using various methods such culture, biochemical test and antimicrobial activity of ginger extracts was analyzed at INES-Ruhengeri in clinical microbiology laboratory. Results: Study findings showed isolated bacteria and antibacterial activity of Ginger. Isolated bacteria and their percentages including Escherichia coli (46.6%) which is the predominant isolated bacteria, Salmonella species (33.33%), Enterobacter spp (10.0%), Shigella spp (6.6%) and Citrobacter (3.33%) which is the least isolated bacteria. Antibacterial activity of ginger was seen on isolated bacteria, as ethanol and methanol were used for ginger oil extraction, the antibacterial activity of ginger extracts using ethanol was seen on isolated bacteria such us Citrobacter spp with 14 mm of inhibition zone, Shigella spp with 12 mm, Salmonella with 11.1 mm, E. coli with 9.5 mm and Enterobacter spp which was seen to be resistant to ginger extract using ethanol with 0.66mm of inhibition zone. For methanol extracts antibacterial activity was seen as follows: Citrobacter spp at 12 mm, Shigella spp at 11 mm, E. coli at 8 mm, salmonella spp at 6.1 mm, and Enterobacter spp with 5 mm. Enterobacter spp was seen to be the most resistant bacteria in both extracts. Conclusion: Ginger has shown to have an antibacterial activity on bacteria isolated from digestive tract infected patients. It can be used as a medicine to treat these infections. Number of researches should be done to be sure on this reality of antibacterial activity of ginger.

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