scholarly journals Determination of In Vitro Antimicrobial Activity of Five Sri Lankan Medicinal Plants against Selected Human Pathogenic Bacteria

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Manikkuwadura Hasara Nethmini De Zoysa ◽  
Hasanga Rathnayake ◽  
Ruwani Punyakanthi Hewawasam ◽  
Weerasinghe Mudiyanselage Dilip Gaya Bandara Wijayaratne
Keyword(s):  
Antibacterial Activity ◽  
Antibiotic Resistance ◽  
Medicinal Plants ◽  
Plant Extracts ◽  
Diffusion Method ◽  
Sri Lankan ◽  
Whole Plant ◽  
Zones Of Inhibition ◽  
Hexane Extracts

Introduction. Antibiotic resistance is one of the greatest threats of the 21st century. Scientists search for potential antimicrobial sources that can cope with antibiotic resistance. Plants used in traditional medicine can be identified as potential candidates for the synthesis of novel drug compounds to act against antibiotic-resistant bacteria. Objective. To determine the potential antimicrobial effects of ethanol, aqueous, and hexane extracts of five Sri Lankan medicinal plants against four human pathogens. Methods. Asparagus falcatus (tubers), Asteracantha longifolia (whole plant), Vetiveria zizanioides (roots), Epaltes divaricata (whole plant), and Coriandrum sativum (seeds) were used in the study. Plant extracts were screened against four clinically important Gram-positive and Gram-negative bacterial strains, Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853), and Klebsiella pneumoniae (ATCC 700603). Antibacterial activity of plant extracts were monitored using the agar disc diffusion method. Eight concentrations of each positive plant extract were used to determine the minimum inhibitory concentration (MIC) by 5-fold dilution of plant extracts yielding a serial dilution of the original extract. Results. Ethanol, aqueous, and hexane extracts of E. divaricata gave the maximum zones of inhibition of 16.3 mm, 7.4 mm, and 13.7 mm and MIC values of 0.48 mg/ml, 1.2 mg/ml, and 1.6 mg/ml, respectively, against S. aureus. Ethanol and hexane extracts of V. zizanioides gave the maximum zones of inhibition of 12.1 mm and 11.4 mm and MIC values 2.4 mg/ml and 0.003 mg/ml, respectively, against S. aureus. None of the other plants were effective against any microorganism used for the study. Conclusions. It can be concluded that E. divaricata and V. zizanioides crude ethanol, aqueous, and hexane extracts exhibited significant in vitro antibacterial activity against S. aureus, and the active compounds isolated from them can be potential sources for the synthesis of antibacterial drugs.

scholarly journals Antibiotic sensitivity and in vitro antimicrobial activity of plant extracts to pseudomonas fluorescens isolates collected from diseased fish

1970 ◽  
Vol 1 (4) ◽  
pp. 82-88 ◽  
Author(s):  
MJ Foysal ◽  
MM Rahman ◽  
M Alam
Keyword(s):  
Antibacterial Activity ◽  
Pseudomonas Fluorescens ◽  
Plant Extracts ◽  
Antibiotic Sensitivity ◽  
Diffusion Method ◽  
Biochemical Tests ◽  
Leaf Extracts ◽  
Sensitivity Pattern ◽  
Medicinal Plant Extracts

Studies were conducted to identify Pseudomonas fluorescens isolates from a collection of bacteria isolated from bacterial haemorrhagic septicaemia infected carp and catfish, evaluate their antibiotic sensitivity pattern and screen the antibacterial activity of some medicinal plant extracts against the isolates.. A total of 10 isolates were identified as P. fluorescens by morphological, physiological and biochemical tests. In vitro antibiotic sensitivity test of the P. fluorescens isolates were conducted by disc diffusion method for seven antibiotics where, all of the isolates were found to be sensitive only against streptomycin and gentamycin but, most of the isolates (80%) were found resistant to chloramphenicol (C). Moreover, eighty percent of the isolates showed resistance to multiple antibiotics. A total of 118 plant extracts were screened for their antibacterial activity against the P. fluorescens isolates where the isolates exhibited sensitivity to 30 samples. Leaf extracts of Tamarindus indicus, Terminalia chebula, Citrus aurantifolia, Eugenia caryophyllata and Spondias pinnata were found to inhibit the growth of all of the P. fluorescens isolates. DOI: http://dx.doi.org/10.3329/ijns.v1i4.9733 IJNS 2011 1(4): 82-88

scholarly journals A new group of compounds derived from 4-, 5-, 6- and 7-aminoindoles with antimicrobial activity

2018 ◽  
Vol 4 (3) ◽  
pp. 27-36 ◽  
Author(s):  
Irina Stepanenko ◽  
Semen Yamashkin ◽  
Yuliya Kostina ◽  
Alyona Batarsheva ◽  
Mikhail Mironov
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Antibiotic Resistance ◽  
Biologically Active ◽  
Diffusion Method ◽  
Significant Activity ◽  
Clinical Strains ◽  
Causative Agents ◽  
New Compounds

Introduction. The problem of antibiotic resistance of microorganisms is becoming more urgent in the twenty-first century. Microorganisms possess an evolutionary adaptive capacity. Non-adherence to the basic principles of rational antibiotic therapy leads to menacing consequences. More and more pathogenic microbes are becoming resistant to two or more antibiotics. The search for new compounds with antimicrobial activity is one of the principles for overcoming the antibiotic resistance of microorganisms. Materials and methods. Eighteen test-strains of microorganisms and more than 2000 clinical strains of microorganisms, representating the families Micrococcaceae, Streptococcaceae, Enterobacteriaceae, Moraxellaceae, Pseudomonadaceae, Sphingomonadaceae, Xanthomonadaceae were studied for sensitivity to the compounds derived from 4-, 5-, 6- and 7-aminoindoles. A method of serial dilutions to determine the minimal inhibitory concentration (MIC) of the compounds under study was used in the study, as well as a disc diffusion method. Results and discussion. Sensitivity of the test-strains and of clinical strains of microorganisms to the resulting compounds was studied. The compounds based on substituted 4-, 5-, 6-, 7-aminoindoles showed different activity against the test strains and experimental strains of microorganisms in vitro. It was found that the marked antibacterial activity was exhibited by the compounds containing a trifluoromethyl group. The most significant activity was noted in amides and pyrroloquinolones based on 4-aminoindole, 6-aminoindole and 7-aminoindole.The most effective compounds with laboratory codes 5D, 7D, 39D, S3, HD, 4D showed a pronounced antibacterial activity. Conclusion. Antimicrobial activity of the substituted amides and pyrroloquinolines on the basis of 4-, 5-, 6-, 7-aminoindoles was etermined in our study, as well as the spectra of their action against Gram-positive and Gram-negative microorganisms, which are causative agents of non-specific and certain specific human infectious diseases. Moreover, we evaluated the synthetic potentials of the substituted 4-, 5-, 6-, 7-aminoindoles as the starting compounds for synthesizing a series of indolylamides and pyrroloquinolines. Also, the prospects for targeted synthesis of biologically active compounds based on indole-type aromatic amines were determined.

scholarly journals In vitro antibacterial activity of several plant extracts and essential oils against Brucella melitensis

2014 ◽  
Vol 60 (1) ◽  
pp. 29-38
Author(s):  
Mazen Safi ◽  
Ayman Al-Mariri
Keyword(s):  
Medicinal Plants ◽  
Essential Oils ◽  
Plant Extract ◽  
Plant Extracts ◽  
Brucella Melitensis ◽  
Diffusion Method ◽  
Resistant Bacteria ◽  
Antibiotic Resistant ◽  
Fluid Medium

Summary Medicinal plants are considered to be new resources for the production of agents that could act as alternatives to antibiotics in the treatment of antibiotic-resistant bacteria. The aim of this study was to evaluate the efficacy of some plants native to Syria in the treatment of brucellosis. In vitro activities of some essential oils and plant extracts of some medicinal plants against 89 Brucella melitensis isolates was determined by disc diffusion method at a concentration of 5%. The microdilution assay in the fluid medium was used to determine the MICs of essential oils and plant extracts. Among the evaluated herbs, only Thymus syriacus and Cinnamomum zeylanicum essential oils and Laurus nobilis plant extract showed a high activity against B. melitensis strains. Thus, minimal inhibitory concentration (MIC50) values for T. syriacus, C. zeylanicum, and L. nobilis against B. melitensis were 6.25, 3.125 and 6.25 μl/ml, respectively. Among studied essential oils and plant extracts, T. syriacus and C. zeylanicum essential oils, and L. nobilis plant extract were the most effective ones. Moreover, T. syriacus - C. zeylanicum combination was more effective than use of each of them alone. Then, T. syriacus and C. zeylanicum essential oils and L. nobilis plant extract could act as bactericidal agents against B. melitensis.

scholarly journals In vitro Antibacterial Activities of Honey Bee Extracts against Bacterial Isolates of Wound Infections

2021 ◽  
pp. 20-25
Author(s):  
O. A. Ayodele ◽  
J. O. Aribisala ◽  
A. T. Oseni ◽  
M. K. Oladunmoye
Keyword(s):  
Antibacterial Activity ◽  
Honey Bee ◽  
Honey Bees ◽  
Inhibitory Activity ◽  
Ethanolic Extract ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Wound Infections ◽  
Zones Of Inhibition

Microorganisms most especially bacteria, continue to develop resistance against antimicrobial agents; hence novel sources of antibiotics are urgently needed to reduce this problem. This study was carried out to investigate the antibacterial activities of ethanolic, chloroform and aqueous extracts of Apis mellifera (honey bee) on isolates of wound infections. The isolates used in this study were procured from University of Ilorin Teaching Hospital (UITH) and confirmed using morphological and biochemical tests. The isolates used include; Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pnuemoniae, Proteus mirabilis and Proteus vulgaris. Honey bees were collected from an apitherapist at Sunshine honey and agro foods, Akure, Ondo State Nigeria. The whole insect was used for in vitro antibacterial evaluation of the isolates using agar well diffusion method. Ethanolic extract of A. mellifera had the highest inhibitory activity with mean zones of inhibition ranging from 7.40 mm to 21.67 mm, chloroform extracts had moderate inhibitory activity ranging from 4.63 mm to 10.03 mm while the aqueous extract had the least activity with zones of inhibition ranging from 3.00 mm to 6.30 mm. However, no antibacterial activity was observed against P. aeruginosa for all the extracts. It is concluded that extracts of honey bees most especially the ethanolic extract have antibacterial activity and thus could be a potential antibacterial agent against isolates of wound infections.

scholarly journals In vitro antibacterial activity of several plant extracts against fish bacterial pathogens

2021 ◽  
Vol 13 (Aquaculture) ◽  
pp. 106-112
Author(s):  
Thi My Duyen Tran ◽  
Trong Tuan Nguyen ◽  
Thi Tuyet Hoa Tran
Keyword(s):  
Antibacterial Activity ◽  
Plant Extracts ◽  
Broad Spectrum ◽  
Alternative Therapy ◽  
Diffusion Method ◽  
Dilution Method ◽  
Fish Pathogens ◽  
Agar Disc ◽  
In Vitro Antibacterial Activity

Crude methanol extract of 9 Vietnamese plants were in vitro screened for their antibacterial activity against three common freshwater fish pathogens including Aeromonas hydrophila, Edwardsiella ictaluri, and Streptococcus agalactiae. Agar disc diffusion method was used to evaluate the antibacterial activity, then solvent extract was performed for the extracts which exhibited the strongest and a broad-spectrum antibacterial activity. Minimal inhibitory concentration (MIC) was conducted for effective plant extracts using broth dilution method. The results indicated that most of the plant extracts exhibited antibacterial propeties to at least one tested bacterium. Headache tree (Premna corymbosa), bushwillows (Combretum quadrangulare) and Celandine spider flower (Cleome chelidonii) showed a broad-spectrum antibacterial activity. The largest inhibitory zones of 35 mm and 21 mm were observed  for the extract of Premna corymbosa against E. ictaluri and S. agalactiae, respectively. E. ictaluri was found to be the most susceptible for all of the extracts while A. hydrophila was the most resistant. The MIC of effective plant extracts against tested bacteria ranged between 0.39 mg/mL and 3.125 mg/mL. The result can be considered for further investigation of the development of an alternative therapy against bacterial infection in aquaculture.

scholarly journals Actividad antibacteriana de extractos vegetales frente a cepas intrahospitalarias, Iquitos-Perú

2018 ◽  
pp. 31-38
Keyword(s):  
Antibacterial Activity ◽  
Plant Extracts ◽  
Diffusion Method ◽  
Cedrela Odorata ◽  
Annona Muricata ◽  
Antibiotic Resistant ◽  
Averrhoa Carambola ◽  
E Coli

Actividad antibacteriana de extractos vegetales frente a cepas intrahospitalarias, Iquitos-Perú Antibacterial activity of plant extracts against nosocomial strains, Iquitos-Peru Ricardo E. Abadie, Ronald Medina O., Lastenia Ruiz, Alvaro Tresierra-Ayala Laboratorio de Microbiología. Centro de Investigación de Recursos Naturales de la Universidad Nacional de la Amazonía Peruana (CIRNA-UNAP). Psje. Los Paujiles S/N, San Lorenzo, distrito de San Juan Bautista, Iquitos-Perú DOI: https://doi.org/10.33017/RevECIPeru2014.0005/  Resumen La región amazónica es una de las áreas que posee la mayor biodiversidad del mundo, albergando varios miles de especies de plantas, muchas de las cuales son utilizadas por sus pobladores como plantas medicinales. Durante los últimos años, el empleo de estos recursos vegetales o de sus productos viene incrementándose de manera importante, lo cual podría deberse a una serie de factores, entre los que destacan el conocimiento de su composición química, y al hecho que en la actualidad se han realizado numerosos ensayos farmacológicos tanto in vivo como in vitro. La aparición de cepas resistentes a los antibióticos comerciales en los últimos tiempos, está creando la necesidad de buscar otras estrategias o alternativas para controlarlas, tal es el caso del uso de las plantas (medicina tradicional), debido a los principios activos que poseen. Se pretende con este trabajo, determinar probables alternativas para combatir infecciones bacterianas de aquellos agentes drogoresistentes, este problema reviste importancia crítica particular en los países en desarrollo, donde quizás no se dispone de antibióticos de segunda línea más costosos o, si los hay, su precio es inasequible. El estudio se realizó en la ciudad de Iquitos, Provincia de Maynas, Departamento de Loreto. Los ensayos microbiológicos se realizaron en el Laboratorio de Microbiología del Centro de Investigación de Recursos Naturales de la Amazonia (CIRNA) de la Universidad Nacional de la Amazonia  Peruana (UNAP). Se determinó la actividad antibacteriana de 6 extractos vegetales (Alchornea triplinervia, Annona muricata, Averrhoa carambola, Brunfelsia grandiflora, Caraipa grandifolia y Cedrela odorata) mediante la técnica de difusión en disco, y a aquellos que presentaron actividad se les determinó la Concentración Inhibitoria Mínima y la Concentración Bactericida Mínima mediante la técnica de macrodilución en caldo. Ninguno de los extractos tuvieron actividad frente a las cepas de E. coli; cuatro extractos tuvieron actividad frente a las cepas de P. aeruginosa, siendo los extractos de Cedrela odorata y Alchornea triplinervia los que tuvieron mayor actividad frente a esta bacteria, con CIM = 15.62 y 62.5 mg/ml, respectivamente; todos los extractos tuvieron actividad frente a las cepas de S. aureus, siendo los extracto de C. odorata, A. triplinervia y Caraipa grandiflora, los de mayor actividad con una CIM = 3.91 mg/ml para cada uno.  Se obtuvieron prometedores resultados de actividad antibacteriana de los extractos en estudio frente a cepas intrahospitalarias, mayormente contra S. aureus. Descriptores: Actividad antibacteriana, extractos vegetales, cepas intrahospitalarias Abstract The Amazon region is one of the areas with the largest biodiversity in the world, hosting several thousand species of plants, many of which are used by its people as medicinal plants. In recent years, the use of these plant resources or products has been increasing significantly, which could be due to a number of factors, among them the knowledge of their chemical composition, and the fact that at present there have been numerous pharmacological tests both in vivo and in vitro. The emergence of antibiotic-resistant strains in recent years, is creating a need for other strategies or ways to control them, as in the case of the use of plants (traditional medicine), because the active ingredients bearing. This work is intended to determine probable alternatives to combat bacterial infections of those agents antibiotic-resistant, this problem is particularly critical in developing countries, where perhaps there are no antibiotics or expensive second line, if any, price is unavailable. The study was conducted in Iquitos city, Province of Maynas, Department of Loreto. Microbiological tests were performed at Microbiology Laboratory of Research Center of Natural Resources of the Amazon (CIRNA) of the National University of the Peruvian Amazon (UNAP). The antibacterial activity of six plant extracts (Alchornea triplinervia, Annona muricata, Averrhoa carambola, Brunfelsia grandiflora, Caraipa grandifolia y Cedrela odorata) by the disk diffusion method was determined, and those that showed activity were determined Minimum Inhibitory Concentration and Minimum Bactericidal Concentration by macrodilution technique. None of the extracts were active against strains of E. coli; four extracts had activity against strains of P. aeruginosa, with Cedrela odorata and Alchornea triplinervia extracts which had greater activity against these bacteria, with MIC = 15.62 and 62.5 mg/ml, respectively; all extracts were active against strains of S. aureus, with the extract of C. odorata, A. triplinervia and Caraipa grandiflora, the most active with an MIC = 3.91 mg/ml for each. Was obtained Promising results of antibacterial activity of the extracts in study against nosocomial strains, mostly against S. aureus. Keywords: Antibacterial activity, plant extracts, nosocomial strains

scholarly journals In-vitro Antibacterial Activity of Novel Nanostructured Composites Based on Forsterite and Silver Nanoparticles

2020 ◽  
Vol 71 (1) ◽  
pp. 13-21
Author(s):  
Alexandra Avram ◽  
Maria Gorea ◽  
Sorin Rapuntean ◽  
Aurora Mocanu ◽  
Gertrud Alexandra Paltinean ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Sol Gel ◽  
Trisodium Citrate ◽  
Inhibitory Effect ◽  
Aureus Strain ◽  
Diffusion Method ◽  
Zones Of Inhibition

There is a continuous need for discovering new nanomaterials with antibacterial activity against various pathogens, like Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). This study was performed to assess the antimicrobial activity of two novel nanostructured forsterites, both in the absence and the presence of silver nanoparticles (AgNPs). The two nano forsterites (FS) were prepared by advanced sol-gel (FSsg) and precipitation (FSpp) methods. Preparation of colloidal AgNPs systems was realized by using the precursor, AgNO3, and the trisodium citrate and tanic acid assuring the formation and stabilization of AgNPs. The characterization of nano forsterite powders was carried out using complementary physical methods: XRD, SEM, and AFM. The AgNPs were characterized by UV-Vis spectra, STEM and AFM imaging. The antimicrobial activity was studied by the agar well diffusion method both in the FS native state, as FSsg and FSpp, and in their mixture with silver nanoparticles (AgNPs). The inhibitory effect of synthesized forsterites, FSsg and FSpp, particularly variants with AgNPs was found only on the S. aureus strain, the zones of inhibition being between 8 and 10 mm, and more intensely expressed in the FSpp-AgNPs dispersions. These findings open new orthopedic applications of these systems, particularly for antimicrobial coated metallic implants.

Revamping squid gladii to biodegradable composites: In situ grafting of polyaniline to β-chitin and their antibacterial activity

2020 ◽  
pp. 088391152097323
Author(s):  
Jolleen Natalie I Balitaan ◽  
Gloricel Anne V Martin ◽  
Karen S Santiago
Keyword(s):  
Antibacterial Activity ◽  
Wound Care ◽  
Oxidative Polymerization ◽  
Biological Properties ◽  
Health Concern ◽  
Diffusion Method ◽  
Seafood Industry ◽  
Zones Of Inhibition

The global health concern on wound care is becoming more challenging with the emerging prevalence of inexorable antibiotic resistance. Amidst this crisis, various material innovations have been made to combat this dilemma. Herein, squid pens, which are regarded as discards in the seafood industry, were biorefined into β-chitin-graft-polyaniline (β-chitin-g-PANI) composites for possible wound dressing development. β-chitin was first chemically extracted from gladii, and was then grafted with PANI via in situ chemical oxidative polymerization of various concentrations of aniline, to produce the β-chitin-g-PANI composites. Supporting data from FTIR, UV-Vis, SEM, TGA, and DSC suggest that β-chitin was successfully grafted with PANI. Moreover, improved conductivity and in vitro degradation of the composites were observed as compared to β-chitin and PANI alone, respectively. Zones of inhibition observed from agar diffusion method suggest that the synthesized composites have antibacterial activity against E. coli and S. aureus. The resulting physicochemical and biological properties of integrating conducting PANI to β-chitin substantiated and rendered the β-chitin-g-PANI composites desirable candidates for the development wound care products.

scholarly journals Phytochemical screening and antimicrobial assay of some Nepalese medicinal plants

1970 ◽  
Vol 9 (9) ◽  
pp. 90-92 ◽  
Author(s):  
Bijaya Laxmi Maharjan ◽  
Smritri Mainali ◽  
Bikash Baral
Keyword(s):  
Medicinal Plants ◽  
Plant Extracts ◽  
Pathogenic Bacteria ◽  
Antimicrobial Properties ◽  
Phytopathogenic Fungi ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Acinetobacter Species ◽  
Antimicrobial Assay

Medicinal plants constitute several bioactive compounds that are antimicrobial. Due to the extensive need of the new antimicrobial compounds of plant origin the study was conducted. The present paper deals with the qualitative phytochemical analysis and antimicrobial assay of methanolic extracts of four medicinal plants namely Butea monosperma (seed), Cissampelos pareira (root), Myrica esculenta (bark) and Selinum tenuifolium (root). The standard phytochemical test of the extracts revealed the presence of polyphenols, glycosides and coumarins in all the plant extracts. For the in-vitro antimicrobial assay, agar well diffusion method was employed against human pathogenic bacteria (11) and phytopathogenic fungi (5). The extracts of C. pareira, M. esculenta were effective against all the tested bacteria and fungi which indicated their broad spectrum antimicrobial potential. The extract of B. monosperma was effective against B. subtilis, S. typhi, Acinetobacter species, F. oxysporum, F. moniliformie, E. turticum and S. roulfsii. But the extract of S. tenuifolium was ineffective against all the tested bacteria but was effective against all the fungal strains revealing it to have more antifungal potential. The antimicrobial properties of these plant extracts may be due to the presence of various secondary metabolites. The results provided evidence that the studied plants might indeed be employed in the management of microbial infections. Key words: Plant extract; Phytochemicals; Antibacterial; Antifungal DOI: http://dx.doi.org/10.3126/sw.v9i9.5526 SW 2011; 9(9): 90-92

Antibacterial activity of selected medicinal plants against multiple antibiotic resistant uropathogens: a study from Kolli Hills, Tamil Nadu, India

2011 ◽  
Vol 2 (3) ◽  
pp. 235-243 ◽  
Author(s):  
A. Narayanan ◽  
S. Raja ◽  
K. Ponmurugan ◽  
S. Kandekar ◽  
K. Natarajaseenivasan ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Antibiotic Resistance ◽  
Medicinal Plants ◽  
Inhibitory Activity ◽  
Tamil Nadu ◽  
Tinospora Cordifolia ◽  
Diffusion Method ◽  
Asparagus Racemosus ◽  
Kolli Hills ◽  
Agar Disc

The increasing incidence of antibiotic resistance among bacterial pathogens necessitates medicinal plants as an alternate therapy in restricting the resistant infectious organisms. In this primitive study, the antibiotic resistance of organisms isolated from urinary tract infected patients was evaluated using the National Committee for Clinical Laboratory Standards (NCCLS) method and Multiple Antibiotic Resistance (MAR) index values, and the MAR values was also calculated for plant extracts. The 10 common medicinal plants collected from Kolli hills, Namakkal, south India were extracted using the chloroform, methanol, acetone, ethanol and saponification procedure. The efficacy of the extracts on the uropathogens was tested by agar disc diffusion method in order to analyse the inhibitory activity of plant extract on the organisms. Azadiracta indica A. Juss., Tinospora cordifolia (Wild.) and Euphorbia hirta Linn. exhibited high inhibitory activity against most of the 11 tested organisms followed by Cassia javanica Linn. and Phyllanthus niruri Linn. The maximum zone size of 46.3 mm was exhibited by methanol extract of P. niruri Linn. against Pseudomonas aeruginosa. Asparagus racemosus Willd. and Eupatorium triplinerve Vahl had the least activity against resistant pathogens. Saponified lipids of most of the plants exhibited maximum antibacterial activity. Among the tested organisms, P. aeruginosa and Staphylococcus epidermidis were the most susceptible and Serratia marcescens, Enterobacter cloaceae, Citrobacter koseri, and Citrobacter freundii were the least inhibited by most of the extracts of medicinal plants. It is concluded that revised antibiotic policies and more importantly the development of herbal medicine as an alternative may be incorporated in urological practice.

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