scholarly journals SCIENTIFIC VALIDATION OF SOME NEPALESE MEDICINAL PLANTS FROM NANGLE BHARE OF KATHMANDU, NEPAL

2019 ◽  
pp. 205-209 ◽  
Author(s):  
BIMALA SUBBA ◽  
MAHESH PRASAD TIMILSINA
Keyword(s):  
Antimicrobial Activity ◽  
Medicinal Plants ◽  
Plant Extracts ◽  
Brine Shrimp ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Frap Assay ◽  
Antioxidant Power ◽  
Percolation Method

Objective: The present study was designed to provide scientific support for the medicinal properties of traditionally used medicinal plants of Nangle Bhare, Kathmandu, Nepal. Methods: Plant extracts were prepared by cold percolation method using methanol solvent. Analysis of phytochemical constituents was carried out using standard methods. The brine shrimp toxicity assay for each extract was carried out according to Mayer et al. The 1, 1-diphenyl-2-picrylhyrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assay were used to evaluate in vitro antioxidants activities. The antimicrobial activity of the plant extracts was carried by the disc diffusion method. Results: Phytochemical analysis revealed the availability of secondary metabolites such as reducing compounds, glycosides, and flavonoids in the methanolic extract of eight plants, namely, frond of Cheilanthes farinosa, leaves of Lyonia ovalifolia, leaves and roots of Rumex nepalensis, aerial stem of Equisetum debile, roots of Coix lacrema-jobi, leaves of Justica adhatoda, leaves of Osyris wightiana, and roots of Rubus ellipticus collected from Nangle Bhare village of Kathmandu district. The brine shrimp bioassay revealed that roots and leaves of R. nepalensis only exhibited lethality against brine shrimp. Frond of C. farinosa and roots of R. nepalensis exhibited good antimicrobial activity against Staphylococcus aureus and Escherichia coli. Both DPPH and FRAP assays showed that among the plant under study, R. ellipticus has lower inhibitory concentration IC50 values than other plants such as L. ovalifolia, R. nepalensis, and C. farinose. Conclusions: On the basis of this study, it was found that scientifically only four, namely C. farinosa, L. ovalifolia, R. nepalensis, and R. ellipticus have medicinal potentials.

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

scholarly journals PHYTOCHEMICAL SCREENING, ANTIMICROBIAL ACTIVITY AND BRINE SHRIMP LETHALITY BIOASSAY OF DIFFERENT EXTRACTS OF ALYSICARPUS VAGINALIS VAR. NUMMULARIFOLIUS (DC.) MIQ. (FAMILY: FABACEAE)

2016 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Susan Kurian ◽  
V. S. Josekumar
Keyword(s):  
Antimicrobial Activity ◽  
Ethyl Acetate ◽  
Plant Extracts ◽  
Brine Shrimp ◽  
Diffusion Method ◽  
Dilution Method ◽  
Phytochemical Analysis ◽  
Phytochemical Screening ◽  
Brine Shrimp Lethality ◽  
Brine Shrimp Lethality Assay

<p><strong>Objective: </strong>To evaluate the antimicrobial activity and cytotoxicity of hexane, ethyl acetate and methanol extracts of <em>Alysicarpus vaginalis </em>var<em>. nummularifolius </em>(DC) along with phytochemical analysis.</p><p><strong>Methods: </strong>The crude extract of hexane (AVH), ethyl acetate (AVE) and methanol (AVM) of <em>Alysicarpus vaginalis </em>var<em>. nummularifolius </em>(DC) were prepared and analysed for phytochemical constituents using standard methods. The cytotoxicity activity of the plant extracts was predicted using brine shrimp lethality assay (BSLA). The antimicrobial activity and the minimal inhibitory concentration (MIC) of the plant extracts were examined against 5 bacterial and 2 fungal strains using agar well diffusion method, and two fold serial dilution method, respectively.</p><p><strong>Results: </strong>The phytochemical screening studies showed a higher concentration of saponins, alkaloids, flavonoids, phenols, quinones and terpenoids in AVM than the other two extracts. The LC<sub>50</sub> value of AVH and AVE were found to be 900.05 µg/ml and 754.35 µg/ml respectively using BSLA while that of AVM was&gt;1000 ug/ml. All the extracts of the plant showed antimicrobial activity against most of the test organisms. The MIC values of AVM were lower than AVE for all the microbial strains except for <em>Pseudomonas aeroginosa</em> where AVE (107.87µg/ml) exhibited higher value than AVM (51µg/ml).</p><p><strong>Conclusion: </strong>The present study concluded AVM with a high presence of phytochemicals. The AVE and AVM were found to possess promising antimicrobial activity when compared with the standards. The AVM exhibited lesser toxicity when compared with AVH and AVE.<strong></strong></p><p> </p>

scholarly journals Study on Phytochemical, Antibacterial, Antioxidant and Toxicity Profile of Viscum album Linn Associated with Acacia catechu

2015 ◽  
Vol 3 (1) ◽  
pp. 60-65
Author(s):  
Meena Kusi ◽  
Kanti Shrestha ◽  
Rajani Malla
Keyword(s):  
Brine Shrimp ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Viscum Album ◽  
Biologically Active ◽  
Frap Assay ◽  
Antioxidant Power ◽  
Percolation Method ◽  
Brine Shrimp Toxicity ◽  
Acacia Catechu

This study focuses on antibacterial, antioxidant and toxic potentials of Viscum album Linn, commonly known as European mistletoe associated with Acacia catechu (Khayer in Nepali). Methanol extract of the aerial parts of the Mistletoe was prepared by cold percolation method. The resulting extract was simultaneously subjected to phytochemical screening; anti-microbial activity; anti-oxidant potential and Brine shrimp toxicity test. The major biologically active phyto-constituents observed were alkaloids, glycosides, saponins, polyphenols, flavonoids, tannins, terpenoids and cardiac glycosides. Upon antibacterial activity screening, the plant extract was found to be highly effective against Pseudomonas aeruginosa with the zone of inhibition 16±1mm compared to 17±1mm of chloramphenicol (50 mcg). The antioxidant activity as EC50 value by DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging activity was found to be 1.58 mg/ml while the ferric reducing capacity was measured to be 282.83±19.55 mg FeSO4.7H2O eqvt/g dry wt. of the extract during Ferric Ion Reducing Antioxidant Power (FRAP) Assay. The LC50 value for Brine Shrimp Toxicity Assay was found to be 31.62 ppm. This study shows the medicinal value of the mistletoe associated with Acacia catechu. Further meticulous analysis of this plant might lead to identification of active biomolecules effective as drugs for various ailmentsNepal Journal of Biotechnology. Dec. 2015 Vol. 3, No. 1: 60-65

scholarly journals In Vitro Antibacterial and Antifungal Activity and Datura Innoxia Extracts

2014 ◽  
Vol 3 (3) ◽  
pp. 173-185
Author(s):  
Adam IY Shama ◽  
YM Abd-Kreem ◽  
AA Fadowa ◽  
RM Samar ◽  
MK Sabahelkhier
Keyword(s):  
Antimicrobial Activity ◽  
Plant Extracts ◽  
Antifungal Drugs ◽  
Diffusion Method ◽  
Antibacterial Drug ◽  
Aqueous Extracts ◽  
Datura Innoxia ◽  
Methanolic Extracts ◽  
Leaves And Roots

The aim of this study was evaluated the Antimicrobial Activity of extraction of Datura innoxia (Seeds, leaves and roots). Datura innoxia Seeds, leaves and roots were collected to examine their antimicrobial activity. Extracts of different parts of the plant were tested against standard microorganisms by using the agar- well diffusion method. Extracts of methanol, and aqueous of seeds, leaves and roots were prepared and tested against four types of bacteria namely: Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Proteus vulgaris and two types of fungi namely: Aspergillus niger and Candida albicans. The methanolic and aqueous extracts of leaves showed high activities against fungi (A. niger) and less effect on the all bacteria. The methanolic extracts of seeds showed high activities against all organisms except fungi (C. albicanas), while the aqueous extracts of seeds showed no activity on the bacteria. All organisms were examined against known standard antibiotics and then compare the results of plant extracts with standard antibiotics. The results indicated that the antibacterial drug is less active than the plant extracts, while the antifungal drugs are more active than the plant extracts. DOI: http://dx.doi.org/10.3126/ije.v3i3.11077 International Journal of Environment Vol.3(3) 2014: 173-185

scholarly journals Phytochemical Screening, Mathematical Analysis and Antimicrobial Activity of Methanolic Seed Extract of Hunteria Umbellata

2020 ◽  
pp. 1-17
Author(s):  
Oluwaseun Raphael Aderele ◽  
Adekunle Kareem Rasaq ◽  
Johnson Oshiobugie Momoh
Keyword(s):  
Antimicrobial Activity ◽  
Seed Extract ◽  
T Test ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
In Vitro Antimicrobial Activity ◽  
E Coli ◽  
Significant Difference ◽  
Agar Well Diffusion Method

Aim: The study evaluates the in-vitro antimicrobial activity of Hunteria umbellata against Escherichia coli, Staphylococcus aureus and Streptococcus sp. Place and Duration of Study: The study was carried out for three months in 2019 in Biochemistry Laboratory, Department of Chemical Sciences (Biochemistry unit), School of Pure and Applied Sciences, Lagos State Polytechnic, Ikorodu, Lagos- Nigeria. Methodology: The qualitative and GC-MS analysis of Hunteria umbellata methanolic seed extract were determined using standard procedure. The antimicrobial activity was evaluated by the disc diffusion method and agar well diffusion method. The experimental data was resampled 1000 times to allow for higher degrees of freedom in carrying out t-test to test for the difference of the effect of in-vitro antimicrobial activity of H. umbellata against E. coli, S. aureus and Streptococcus sp using mathematical software R language (3.6.1 version). Line plots, histogram and t-test are used to explain the effect of antimicrobial activity of H. umbellate on the selected bacteria. MIC and MBC were determined using standard methods. Results: The Phytochemical analysis of methanolic seed extract of Hunteria umbellata showed the presence of secondary metabolites like saponins, tannins, flavonoids, steroids, phenol among others. GC-MS assay of the H. umbellata seed extract revealed the presence of eight different compounds. Agar well diffusion method was characterized by inhibition zones of 18.36±0.87, 19.13±1.03 and 21.62±2.53 mm for E.coli, S. aureus and Streptococcus sp respectively at 300 mg/ml-1 and 21.70± 1.60, 23.83± 2.64 and 28.57± 1.52 for E.coli, S. aureus and Streptococcus sp respectively at 500 mg/ml. The results of the analysis show that there is a significant difference between the effects of in-vitro antimicrobial activity of H. umbellate on 3001 and 500 mg/ml on each bacteria tested at 5% level of significance. E.coli, S. aureus and Streptococcus sp were tested against 12 standard antimicrobial agents, of which six was sensitive and another six was resistance to E .coli, seven was sensitive, and five was resistance to S. aureus while four was resistance and eight sensitive to Streptococcus sp. The minimum inhibitory concentration (MIC) for E.coli, S. aureus, and  Streptococcus sp were 250, 125 and 31.25 mgml-1 while their minimum bactericidal concentration (MBC) were 500, 250 and 125 respectively. MIC and MBC tests showed that H. umbellata methanolic seed extract had noticeable bactericidal effects with MBC/MIC values ranging between 2 to 4. The extract has strong potency against these microorganisms with Streptococcus sp being the most susceptible. Conclusions: Hunteria umbellata has potential as natural therapeutic agents against E. coli, S. aureus and Streptococcus sp and they may prevent pathogenic diseases.

scholarly journals PRELIMINARY PHYTOCHEMICAL SCREENING AND IN VITRO ANTI-MICROBIAL ACTIVITY OF ETHANOLIC EXTRACT OF STEMS OF THE PLANT TAGETES ERECTA L. (FAMILY-ASTERACEAE)

2018 ◽  
Vol 10 (4) ◽  
pp. 64
Author(s):  
Jafar Ali ◽  
Dibyendu Shil
Keyword(s):  
Antimicrobial Activity ◽  
Microbial Activity ◽  
Ethanolic Extract ◽  
Diffusion Method ◽  
Tagetes Erecta ◽  
Phytochemical Analysis ◽  
Standard Drug ◽  
Phytochemical Constituents ◽  
Tagetes Erecta L

Objective: To estimate the anti-microbial activity of ethanolic extract of Tagetes erecta L. (family-Asteraceae) in association with phytochemical analysis.Methods: The ethanolic extract of the stems of TageteseErecta L. was prepared and investigate for phytochemical constituents using standard methods. Antimicrobial activity of ethanolic extract of has been carried out against one Gram positive bacteria-Staphylococcus aureus and one Gram negative bacteria-Escherichia coli, and the antifungal activity of the plant extract was evaluated on Candida albicans species. The testing was done by the disc diffusion method to visualize the zone of inhibition of ethanolic extract was compared with that of standard drug i.e., Ciprofloxacin for anti-bacterial activity and Terbinafine for anti-fungal activity. The MIC was determined by the microdilution method (Cup-plate method).Results: The present investigation shows the phytochemical analysis, antimicrobial activity of the ethanolic extract of the stems of Tagetes erecta L. Various phytochemical analysis confirmed the presence of alkaloids, saponin glycosides, flavonoids, phenol, proteins and amino acids, cardiac glycosides, steroids, tanin and phenolic compounds. The anti-microbial activity of the ethanolic extract of the plant showed significant results against all three of the test organisms in compare to the standard drugs.Conclusion: The present study concluded that ethanolic extract of-of the stems of Tagetes erecta L. Proved the existence of phytochemical constituents. The ethanolic extract of the plant was found to possess promising antimicrobial activity when compared with the standards and it can be useful for the development of the antibiotics.

In vitro antimicrobial activity and phytochemical analysis of fruits of Syzygium aromaticum (L.) Merr. & L.M.Perry - An important medicinal Plant

2016 ◽  
Vol 5 (4) ◽  
pp. 137-140
Author(s):  
Duraisamy Kayal Vizhi ◽  
◽  
Kokkaiah Irulandi ◽  
Palanichamy Mehalingam ◽  
Natarajan Nirmal Kumar ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Medicinal Plant ◽  
Ethyl Acetate ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Syzygium Aromaticum ◽  
Active Components ◽  
Methanol Extracts ◽  
Important Medicinal Plant

The fruit of Syzygium aromaticum is an important medicinal plant was subjected to phytochemical screening and antimicrobial effect of methanol, ethyl acetate and acetone extracts. Antimicrobial activity was analyzed by agar well diffusion method against gram positive and gram negative bacteria. The phytochemical analysis carried out revealed the presence of alkaloids, coumarins, catechins, flavanoids, phenols, saponins, terpenoids, tannins and steroids in various solvent extracts. Methanol extract of S. aromaticum showed good antimicrobial activity against Bacillus subtilis, Pseudomonas aeruginosa and Staohylococcus aureus. It has been showed that the methanol extracts had wider range of activity on these organisms than the acetone and ethyl acetate extracts, which indicates that the methanol extracts of selected plants may contain the active components. The use of plant extracts with known antimicrobial properties can be of great significance in therapeutic treatments.

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 Antimicrobial Activity of Selected Medicinal Plants from a Sub-Saharan African Country Against Bacterial Pathogens from Post-Operative Wound Infections

2021 ◽  
Vol 9 (2) ◽  
pp. 23
Author(s):  
Enid Owusu ◽  
Martin Mensah Ahorlu ◽  
Emmanuel Afutu ◽  
Amos Akumwena ◽  
George Awuku Asare
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Medicinal Plants ◽  
Traditional Medicine ◽  
Chronic Wounds ◽  
Bacterial Pathogens ◽  
Antimicrobial Activities ◽  
Aureus Strain ◽  
Diffusion Method ◽  
Phytochemical Analysis

Background: Globally, the application of medicinal plants in the management of acute and chronic wounds can be considered a common occurrence in most traditional medicine practices. In view of this, many plants in the tropical and subtropical regions have been screened for their wound-healing activities. Consequently, plants having antimicrobial activity against multidrug-resistant (MD-R) pathogens can be considered great assets. Therefore, this study evaluated ethanolic and aqueous extracts of five medicinal plants (Psidium guajava, Myrianthus arboreus, Alchornea cordifolia, Momordica charantia, and Justicia flava) for their antimicrobial activities against MD-R bacterial pathogens isolated from post-operative wounds; Methods: This involved the aqueous and ethanolic extraction of the selected medicinal plants. Preliminary phytochemical constituents of the plants were examined. The agar well diffusion method was then used to determine the antibacterial activity of the leaves against reference strains (Escherichia coli ATCC 25922, Salmonella typhi ATCC 19430, Pseudomonas aeruginosa ATCC 27853 and Staphylococcus aureus ATCC 25923, and a Methicillin-Resistant Staphylococcus aureus strain) as well as the MDR clinical isolates (E. coli, P. aeruginosa, S. aureus and CoNS) from the wounds; Results: The preliminary phytochemical analysis of the leaves showed the presence of saponins, phenolics, and reducing sugars in almost all the plants tested. All plant extracts were observed to have some antimicrobial activity against at least one reference strain. For the clinical MDR isolates, A. cordifolia from this study showed highest inhibition to growth of all bacteria used. Activity of J. flava against S. aureus was highest as compared to that of E.coli and P. aeruginosa. Similar observation was made for M. arboreus, P. guajava and M. charantia where the highest activity was observed against S. aureus; Conclusion: This study has mainly shown that P. guajava, M. arboreus, A. cordifolia, M. charantia, and J. flava exhibits antimicrobial activities against MD-R bacterial pathogens isolated from post-operative wounds. Also, these plants has bioactive phytochemical compounds with potential medicinal values for the treatment of numerous infections. Therefore, these plants may be helpful in the management of acute and chronic wounds, especially in traditional medicine practices.

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