scholarly journals A COMPARATIVE STUDY ON THE EFFECT OF SOLVENTS ON THE PHYTOCHEMICAL PROFILE AND BIOLOGICAL POTENTIAL OF ORMOCARPUM COCHINCHINENSE AUCT. NON (LOUR.) MERRILL

2016 ◽  
Vol 9 (1) ◽  
pp. 67
Author(s):  
A. Hannah Hepsibah ◽  
G. Jeya Jothi
Keyword(s):  
Antimicrobial Activity ◽  
Antifungal Activity ◽  
Ethyl Acetate ◽  
Diffusion Method ◽  
Antioxidant Compounds ◽  
Phytochemical Analysis ◽  
Dpph Assay ◽  
Biological Potential ◽  
Phytochemical Profile ◽  
Ethanol Extracts

<p><strong>Objective: </strong>Plants contain different classes of phytochemicals which have different levels of solubility in solvents, based on their polarity. Hence, this study aims to compare the effects of various solvents on the phytochemical profile and biological potential of <em>Ormocarpum cochinchinense</em>. The present study is the first to evaluate the antifungal activity of the plant.<strong></strong></p><p><strong>Methods: </strong>The sequential extraction was carried out using two sets of solvent systems namely hexane, ethyl acetate, ethanol and chloroform, acetone, methanol. The extracts were subjected to standard phytochemical analysis, antimicrobial activity by disc diffusion method against eight bacteria and six fungi and antioxidant activity by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assay.</p><p><strong>Results: </strong>Varied range of phytochemicals was found in the extracts. Acetone extract was rich in phenolic compounds, whereas terpenoids were extracted only in methanol. Acetone extracts showed highest antibacterial activity with a maximum zone of 14.5 mm against <em>Shigella flexineri</em> whereas ethyl acetate extract showed the best antifungal activity with the highest zone of inhibition of 12 mm against <em>Trichophyton menta agrophytes.</em> Hexane and chloroform extracts did not show any antimicrobial activity. For DPPH assay, the ethanol extracts showed the highest percentage inhibition of 92.87%. <strong></strong></p><p><strong>Conclusion: </strong>The present investigation on the plant <em>O. cochinchinense</em> has proved that the selection of solvent for extraction should be based on the target compounds and their bioactivity and concludes that acetone was the best for the extraction of antibacterial compounds and ethyl acetate for antifungal compounds whereas, ethanol was the best for extracting antioxidant compounds in <em>O. cochinchinense.</em></p>

IN VITRO ANTIMICROBIAL ACTIVITY OF CYNODON DACTYLON (L.) PERS. LEAF EXTRACTS. ANTIMICROBIAL ACTIVITY BY ZONE OF INHIBITION ESTIMATION

INDIAN DRUGS ◽  
2015 ◽  
Vol 52 (04) ◽  
pp. 37-41
Author(s):  
S. M Pawaskar ◽  
◽  
K. C. Sasangan
Keyword(s):  
Antimicrobial Activity ◽  
Antifungal Activity ◽  
Ethyl Acetate ◽  
Petroleum Ether ◽  
Cynodon Dactylon ◽  
Diffusion Method ◽  
Zone Of Inhibition ◽  
Leaf Extracts ◽  
In Vitro Antimicrobial Activity

The present study was undertaken to evaluate in vitro antimicrobial activity of the successive leaf extracts of Cynodon dactylon in petroleum ether, ethyl acetate, acetone, ethanol, methanol and water, against various gram positive & gram negative bacterial strains using zone of inhibition. Both Agar well diffusion method & Agar disc diffusion method were used to evaluate the antibacterial efficacy. The microorganisms used in the test were – Escherichia coli, Proteus vulgaris, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Shigella flexneri, Salmonella typhi, Salmonella paratyphi A, Salmonella paratyphi B, Bacillus subtilis, Streptococcus pyogenes, Vibrio cholerac and Enterobacter aerogenes. Two fungal strains - Candida albicans and Saccharomyces cerevisiae were also tested to evaluate the antifungal potential of the said plant extract. The reference antibiotics chloramphenicol & ampicillin (antibacterial); nystatin & clotrimazole and (antifungal) were also tested against these standard microorganisms used in the assay and the results were compared with that of the plant extracts.The results of the study revealed that all the seven successive extracts of the leaf powder of Cynodon dactylon ( L.) Pers. exhibited prominent antimicrobial and antifungal activity against all microorganisms used in the study. The nonpolar extracts i.e. petroleum ether, ethyl acetate and acetone showed the most significant antibacterial and antifungal activity against all tested organisms. The petroleum ether and ethyl acetate extracts showing maximum inhibition in the range of 8 mm - 15 mm. This was closely followed by, acetone extract, which showed the inhibition in the range of 9 mm - 13 mm.

Antimicrobial potentials, phytochemical screening and determination of bioactive compounds from Three Indian folk medicinal plants

2020 ◽  
Vol 16 ◽  
Author(s):  
V. Vanitha ◽  
S. Vijayakumar ◽  
S. Rajalakshmi
Keyword(s):  
Antimicrobial Activity ◽  
Ethyl Acetate ◽  
Leaf Extract ◽  
Antimicrobial Agents ◽  
Ethyl Acetate Extract ◽  
Diffusion Method ◽  
Dilution Method ◽  
Phytochemical Analysis ◽  
Leaf Extracts ◽  
Ft Ir

Aim: To investigate the antimicrobial efficacy of various solvents leaf extracts of Aegle marmelos, Plumbago zeylanica and Rhinacanthus nasutus against human pathogenic organisms such as Acinetobacter baumannii, Salmonella enteriditis, Bacillus cereus, Streptococcus pneumonia, Mycobacterium tuberculosis and Aspergillus fumigatous by agar well diffusion method. Background: Also, this is the first time report on MIC and MBC/MFC activities and identify the phytochemicals and functional groups using HPLC, GC-MS and FT-IR analysis. Objective: Minimum inhibitory concentration (MIC), minimum bactericidal (MBC/MFC) values were also carried out by the micro dilution method. Methods: Ethyl acetate extract of P. zeylanica showed better antimicrobial activity against the tested pathogens, especially for S. pneumoniae (40 mm) followed by ethyl acetate extract of R. nasutus (36 mm) against S. pneumoniae. While least inhibition was observed for aqueous extract of P.zeylanica against S. enteritis (10 mm). Results: The MIC ranged from 3.75 µg/ml to 60µg/ml and MBC/MFC 7.5 µg/ml to 60 µg/ml. Phytochemical analysis exhibited the presence of alkaloids, steroids, saponins, flavonoids, tannins, terpenes, phenolics and cardiac glycoside in all samples of selected plant extracts. Tannins, phenolics and glycoside were found only in the ethyl acetate extract of P.zeylanica. HPLC and GC-MS analysis of ethyl acetate leaf extract of P. zeylanica exposed ten major peaks and eleven compounds respectively. Chemical nature of the leaf extract was analysed by FT-IR spectrum. Conclusion: Ethyl acetate leaf extract of P. zeylanica showed better antimicrobial activity than other extracts as well as standard drugs. Therefore, this plant could be studied in detail for the identification of active biomolecules for antimicrobial agents.

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 PRELIMINARY PHYTOCHEMICAL SCREENING AND ANTIMICROBIAL ACTIVITY OF DRIED FLOWERS OF ADENIUM OBESUM

2019 ◽  
pp. 34-36
Author(s):  
SIREESHA KALVA ◽  
RAGHUNANDAN N.
Keyword(s):  
Antimicrobial Activity ◽  
Antifungal Activity ◽  
Methanolic Extract ◽  
Diffusion Method ◽  
Dilution Method ◽  
Phytochemical Analysis ◽  
Standard Drug ◽  
Inhibition Concentration ◽  
Test Organisms ◽  
Phytochemical Constituents

Objective: To estimate the antimicrobial activity of methanolic extract of Adenium obesum (family Apocyanaceae) in association with phytochemical analysis. Methods: The methanolic extract of the flowers of Adenium obesum was prepared and investigated for phytochemical constituents using standard methods. Antimicrobial activity of methanolic extract Adenium obesum 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 methanolic extract was compared with that of standard drug i.e., Ciprofloxacin for antibacterial activity and Fluconazole for antifungal activity. The minimum inhibition concentration was determined by micro dilution method (cup-plate method). Results: The present investigation shows the phytochemical analysis confirmed the presence of alkaloids, saponin glycosides, flavonoids, phenols, proteins and amino acids, cardiac glycosides, steroids, tannin, and phenolic compounds. The anti-microbial activity of the methanolic extract of the plant showed significant results against all the three of the test organisms in compare to the standard drugs. Conclusion: The present study concluded that methanolic extract of the flowers of adenium obesum proved the existence of phytochemical constituents. The methanolic extract of the was found to possess promising antimicrobial activity when compared with the standards and it can be useful for the development of antibiotics.

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 Phytochemical analysis of Ardisia silvestris leaf extracts and their antioxidant and antibacterial activities

2020 ◽  
Vol 19 (04) ◽  
pp. 28-35
Author(s):  
Biet V. Huynh
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Ethyl Acetate Extract ◽  
Antibacterial Properties ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Agar Diffusion ◽  
Dpph Method ◽  
Agar Diffusion Method ◽  
Ethanol Extracts

The phytochemical analysis and antibacterial and antioxidant activity of Ardisia silvestris extracts were carried out. The bioactive compounds of Ardisia silvestris leaves were extracted with petroleum ether, ethyl acetate, ethanol and water by immersion and microwave method. The DPPH method was used to determine the antioxidant activity of Ardisia silvestris extracts. The antibacterial properties of Ardisia silvestris tested against of Staphylococcu saureus, Samonella sp., and Escherichia coli were determined by using agar diffusion method. The agar diffusion method was used to determine the antibacterial effects of both plant extracts on the test organisms. The results showed that Ardisia silvestris leaves contained compounds such as essential oils, fats, alkaloids, flavonoids, coumarins, tannins, anthocyanoids, carotenoids, organic acids, reducing agents, proanthocyanidins, saponins and anthraquinones. Ardisia silvestris leaves had a total polyphenol content of 0.26% dry matter, tannin of 8.8%, and a total flavonoid of 1.44 mg/g. The ethyl acetate extract and water extract of the leaves had the antioxidant activity and were 4.2 and 4.4 times lower than ascorbic acid, respectively. The ethyl acetate extract of Ardisia silvestris had the highest oxidative activity. The zone of inhibition of the plant extract diameters at the concentration of 100 µl/ml ranged between 9.67mm and 20.67mm for ethyl acetate and ethanol extracts, respectively on E. coli. Similarly, the zones of inhibitionof ethyl acetate and ethanol extracts diameters were 14.67 and 15.33 mm, respectively on Samonella sp., however, it was not shown for Staphylococus aureus.

scholarly journals PRELIMINARY PHYTOCHEMICAL SCREENING AND ANTIMICROBIAL ACTIVITY OF DRIED FLOWERS OF ADENIUM OBESUM

2019 ◽  
pp. 34-36
Author(s):  
SIREESHA KALVA ◽  
RAGHUNANDAN N.
Keyword(s):  
Antimicrobial Activity ◽  
Antifungal Activity ◽  
Methanolic Extract ◽  
Diffusion Method ◽  
Dilution Method ◽  
Phytochemical Analysis ◽  
Standard Drug ◽  
Inhibition Concentration ◽  
Test Organisms ◽  
Phytochemical Constituents

Objective: To estimate the antimicrobial activity of methanolic extract of Adenium obesum (family Apocyanaceae) in association with phytochemical analysis. Methods: The methanolic extract of the flowers of Adenium obesum was prepared and investigated for phytochemical constituents using standard methods. Antimicrobial activity of methanolic extract Adenium obesum 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 methanolic extract was compared with that of standard drug i.e., Ciprofloxacin for antibacterial activity and Fluconazole for antifungal activity. The minimum inhibition concentration was determined by micro dilution method (cup-plate method). Results: The present investigation shows the phytochemical analysis confirmed the presence of alkaloids, saponin glycosides, flavonoids, phenols, proteins and amino acids, cardiac glycosides, steroids, tannin, and phenolic compounds. The anti-microbial activity of the methanolic extract of the plant showed significant results against all the three of the test organisms in compare to the standard drugs. Conclusion: The present study concluded that methanolic extract of the flowers of adenium obesum proved the existence of phytochemical constituents. The methanolic extract of the was found to possess promising antimicrobial activity when compared with the standards and it can be useful for the development of antibiotics.

The In vitro Evaluation of the Antimicrobial Activity of Quercus robur L. Methanolic and Aqueous Leaves’ Extracts, from the Algerian High Plateaus Against some Uropathogenic Microbial Strains

2019 ◽  
Vol 18 (5) ◽  
pp. 262-274
Author(s):  
E. Benyagoub ◽  
N. Nabbou ◽  
S. Boukhalkhel ◽  
I. Dehini
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Enterococcus Faecalis ◽  
Fusidic Acid ◽  
Quercus Robur ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Microbial Strains

The medicinal value of the plants is due to their chemical components that bring a definite physiological action on the human body to prevent the diseases. In this work, we investigated the antimicrobial activity of leaves’ extracts of Quercus robur L., collected from the Algerian upper highlands, on ten bacterial strains and one fungal strain known to be pathogenic. First, we performed a qualitative phytochemical analysis, and second, antimicrobial activity tests performed by agar diffusion method (disc and well) with the determination of MIC by broth macro-dilution method. Given the results, it appears that obtained macerates of Quercus robur L. were rich in bioactive phytoconstituents such as alkaloids, anthraquinones, saponins, tannins, and other components. The yield of aqueous and methanolic macerates of leaves was 8.5 ± 1.41 and 22.4 ± 4.36%, respectively. The bacterial resistance was relatively important to several antibiotics, namely, ampicillin, amoxicillin + clavulanic acid for strains of Escherichia coli and Salmonella sp. However, Staphylococcus aureus strains were resistant to fusidic acid, penicillin, and oxacillin; while Enterococcus faecalis was resistant to fusidic acid, penicillin, oxacillin, and ticarcillin. The antibacterial activity of the macerates toward tested microbial strains showed that the aqueous and methanolic macerates of the leaves were proportional to the tested concentration and active not only against Gram-positive and Gram-negative bacteria but also on the fungal species Candida albicans. The estimated MIC for Escherichia coli, Enterococcus faecalis, and Staphylococcus aureus was in the order of 10 mg/mL, which seems more effective than toward Salmonella sp., Klebsiella pneumoniae, Pseudomonas aeruginosa, and Candida albicans which were in the order of 30 mg/mL. These preliminary results confirm that the part of the studied plant had a very good antimicrobial activity that was proportional to the serial concentrations of the tested extracts.

scholarly journals An In Vitro Study on the Antimicrobial Properties of Essential Oil Modified Resin Composite against Oral Pathogens

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4383
Author(s):  
Barbara Lapinska ◽  
Aleksandra Szram ◽  
Beata Zarzycka ◽  
Janina Grzegorczyk ◽  
Louis Hardan ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Antifungal Activity ◽  
Antimicrobial Agents ◽  
Resin Composite ◽  
Antimicrobial Properties ◽  
In Vitro Study ◽  
Diffusion Method ◽  
Oral Pathogens

Modifying the composition of dental restorative materials with antimicrobial agents might induce their antibacterial potential against cariogenic bacteria, e.g., S.mutans and L.acidophilus, as well as antifungal effect on C.albicans that are major oral pathogens. Essential oils (EOs) are widely known for antimicrobial activity and are successfully used in dental industry. The study aimed at evaluating antibacterial and antifungal activity of EOs and composite resin material (CR) modified with EO against oral pathogens. Ten EOs (i.e., anise, cinnamon, citronella, clove, geranium, lavender, limette, mint, rosemary thyme) were tested using agar diffusion method. Cinnamon and thyme EOs showed significantly highest antibacterial activity against S.mutans and L.acidophilus among all tested EOs. Anise and limette EOs showed no antibacterial activity against S.mutans. All tested EOs exhibited antifungal activity against C.albicans, whereas cinnamon EO showed significantly highest and limette EO significantly lowest activity. Next, 1, 2 or 5 µL of cinnamon EO was introduced into 2 g of CR and microbiologically tested. The modified CR showed higher antimicrobial activity in comparison to unmodified one. CR containing 2 µL of EO showed the best antimicrobial properties against S.mutans and C.albicans, while CR modified with 1 µL of EO showed the best antimicrobial properties against L.acidophilus.

scholarly journals Evaluation of antimicrobial, antioxidant and cytotoxic properties of bioactive compounds produced from endophytic fungi of Himalayan yew (Taxus wallichiana) in Nepal

F1000Research ◽  
2020 ◽  
Vol 9 ◽  
pp. 379 ◽  
Author(s):  
Dhurva Prasad Gauchan ◽  
Pratistha Kandel ◽  
Astha Tuladhar ◽  
Ashesh Acharya ◽  
Upendra Kadel ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Secondary Metabolites ◽  
Ethyl Acetate ◽  
Bioactive Compounds ◽  
Endophytic Fungi ◽  
Diffusion Method ◽  
Dry Extract ◽  
Brine Shrimp Lethality Assay ◽  
Fungal Extracts ◽  
Taxus Wallichiana

Background: Endophytic fungi are largely underexplored in the discovery of natural bioactive products though being rich sources of novel compounds with promising pharmaceutical potential. In this study, Taxus wallichiana, which has huge medicinal value, was investigated for its endophytic diversity and capability to produce bioactive secondary metabolites by analyzing antioxidant, antimicrobial and cytotoxic properties. Methods: The endophytes were identified by ITS-PCR using genomic DNA samples. The secondary metabolites were extracted by solvent extraction method using ethyl acetate. The antioxidant activity was analyzed by Thin Layer Chromatography, Total Phenol Content (TPC), Total Flavonoid Content (TFC) and DPPH assay, and the antimicrobial activity was analyzed by agar-well diffusion method. Brine shrimp lethality assay was used to analyze the cytotoxicity of the fungal extracts. Results: Out of 16 different Taxus trees sampled from different locations of Dhorpatan, 13 distinctive endophytic fungi were isolated and grouped into 9 different genera: Bjerkandera, Trichoderma, Preussia, Botrytis, Arthrinium, Alternaria, Cladosporium, Sporormiella and Daldinia. The ethyl acetate extracts isolated from three endophytic fungi: Alternaria alternata, Cladosporium cladosporioides and Alternaria brassicae showed significant TPC values of 204±6.144, 312.3±2.147 and 152.7±4.958µg GAE/mg of dry extract, respectively, and TFC values of 177.9±2.911, 644.1±4.202 and 96.38±3.851µg RE/mg of dry extract, respectively. Furthermore, these three extracts showed a dose dependent radical scavenging activity with IC50 concentration of 22.85, 22.15 and 23.001 µg/ml, respectively. The extracts of C. cladosporioides and A. brassicae also showed promising antimicrobial activity against Escherichia coli, Staphylococcus aureus and Bacillus subtilis with a minimum inhibitory concentration of 250μg/ml for all bacteria. Both the samples showed cytotoxic property against shrimp nauplii with LC50 of 104.2 and 125.9µg/ml, respectively. Conclusions: The crude fungal extracts obtained from endophytes: A. alternata, C. cladosporioides and A. brassicae upon purification and further identification of the bioactive compounds can be a fascinating source for novel pharmaceutical agents.

Sign in / Sign up

Export Citation Format

Share Document