Preliminary Anti-bacterial Activity of Some Indigenous Plants of Bangladesh

The antibacterial activity of petroleum ether, carbon tetrachloride and chloroform solublefractions of crude methanol extracts of nine indigenous plant species of Bangladesh was evaluated by the agardiffusion method. Kanamycin (30 μg/disc) was used as a standard antibacterial agent. The results indicated thatall the nine plant species (not all partitionates) exhibited moderate to potent antibacterial activity against a widevariety of gram- positive and gram-negative bacteria at a concentration of 400μg/disc. Among them the carbontetrachloride soluble fraction of whole plant extract of Corriandrum sativum (family-Apiaceae) revealed thehighest antibacterial activity against Shigella boydii with zone of inhibition of 29 mm.Key words: Antibacterial activity; Disc diffusion method; Extract; Indigenous plants of Bangladesh.DOI: 10.3329/dujps.v8i1.5337Dhaka Univ. J. Pharm. Sci. 8(1): 61-65, 2009 (June)

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ANTIBACTERIAL ACTIVITY OF ETHANOL CRUDE EXTRACTS OF WHOLE PLANT OF THE UGANDAN PHYLLANTHUS AMARUS SCHUMACH. & THONN AGAINST SHIGELLA DYSENTERIAE

Bacterial Empire ◽

10.36547/be.2019.2.2.33-36 ◽

2019 ◽

Vol 2 (2) ◽

pp. 33

Author(s):

Magimbi Arthur ◽

Adamu Almustapha Aliero ◽

John Odda

Keyword(s):

Antibacterial Activity ◽

Crude Extract ◽

Standard Error ◽

Shigella Dysenteriae ◽

Diffusion Method ◽

Dilution Method ◽

Phyllanthus Amarus ◽

Zone Of Inhibition ◽

Crude Extracts ◽

Whole Plant

Apart from being used for the treatment of malaria fevers, mono-herbal preparation of Ugandan Phyllanthus amarus is widely by local communities in central Uganda, for treatment of bacterial dysentery. However, efficacy studies regarding the mono-herbal extracts of the Ugandan Phyllanthus amarus against Shigella dysenteriae is lacking. The present study was aimed at determined the antibacterial activity of aqueous ethanol crude extracts of whole plant of Phyllanthus amarus against Shigella dysenteriae. Whole plant of Phyllanthus amarus was collected from Wakiso district central of Uganda. Different concentrations (128µg/ml, 256µg/mL-1 and 512µg/ mL-1) of the ethanol crude extract of whole plant of Phyllanthus amarus were tested against Shigella dysenteriae using agar well diffusion method. Minimum inhibitory concentration (MIC) was determined using broth tube dilution method while Minimum bactericidal concentration (MBC) was determined by culture method. The results of this study showed that, Shigella dysenteriae was sensitive to different concentrations (128µg/ mL-1, 256µg/ mL-1and 512µg/ mL-1) of ethanol crude extract of whole plant of Phyllanthus amarus possessed antibacterial against Shigella dysenteriae with mean and standard error mean zone of inhibition ranging from 11.5±0.5 to 13.5±0.5mm, while the positive control had mean and standard error mean zone of inhibition 24.5±0.5mm. The MIC and MBC of the ethanol crude extract of whole plant of Phyllanthus amarus against Shigella dysenteriae was found to be 32µg/ml and 64µg/ml respectively. This study found that the whole plant of phyllanthus amarus of ethanol crude extract was active against Shigella dysenterie. Further study should be carried out test whole plant Phyllanthus amarus crude extract on different microorganisms that cause dysentery to find out its activity against them and spectrum, determine lead compound in the whole plant Phyllanthus amarus crude extract responsible for the anti-microbial activity against Shigella dysenteriae and also determine the mechanism of action by which this plant crude extract inhibits Shigella dysenteriae.

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Chemical and Biological Investigations of Justicia gendarussa (Burm. f)

Dhaka University Journal of Pharmaceutical Sciences ◽

10.3329/dujps.v10i1.10016 ◽

2012 ◽

Vol 10 (1) ◽

pp. 53-57

Author(s):

Md Rakib Uddin ◽

Suchana Sinha ◽

Md Aslam Hossain ◽

Md Abul Kaisar ◽

Md Khalid Hossain ◽

...

Keyword(s):

Petroleum Ether ◽

Methanol Extract ◽

Soluble Fraction ◽

Diffusion Method ◽

Cytotoxic Activities ◽

Zone Of Inhibition ◽

Disc Diffusion Method ◽

Whole Plant ◽

Ic50 Value ◽

Crude Methanol Extract

In this study, three compounds, stigmasterol (1), lupeol (2), 16-hydroxylupeol (3) were isolated from the petroleum ether soluble fraction of a methanol extract of whole plant of Justica gendarussa (Burm. f). The crude methanol extract as well as its petroleum ether, carbon tetrachloride and chloroform soluble Kupchan fractions were studied for antioxidant, antimicrobial and cytotoxic activities. Among the different fractions tested for antioxidant activity, the chloroform soluble partitionate was the most potent with IC50 value of 18.80 μg/ml as compared to tertbutyl- 1-hydroxytoluene (IC50=17.69 μg/ml). Antimicrobial screening of the different extractives was conducted by the disc diffusion method and all the fractions except chloroform soluble partitionate exhibited mild antimicrobial activity with zone of inhibition ranging from 7-10 mm. In brine shrimp lethality bioassay, the petroleum ether soluble materials demonstrated the highest toxicity with LC50 of 1.27μg /ml. This is the first report of isolation of compounds from J. gendarussa, and its antioxidant, antimicrobial and cytotoxic properties. DOI: http://dx.doi.org/10.3329/dujps.v10i1.10016 DUJPS 2011; 10(1): 53-57

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Evaluation of the Antibacterial and Antioxidant Activity of Mimosa rubicaulis and Reinwardtia indica

Evidence-based Complementary and Alternative Medicine ◽

10.1155/2020/3862642 ◽

2020 ◽

Vol 2020 ◽

pp. 1-6

Author(s):

Roshani Gurung ◽

Sundar Adhikari ◽

Kalpana Parajuli

Keyword(s):

Antioxidant Activity ◽

Wound Healing ◽

Antibacterial Activity ◽

Plant Species ◽

Antioxidant Activities ◽

Radical Scavenging ◽

Diffusion Method ◽

Zone Of Inhibition ◽

Ic50 Value ◽

Antibacterial And Antioxidant Activity

Many plants have the property of wound healing, but most of the people are using costly allopathic medicine for the wound. This might be due to lack of awareness about the traditional uses and lack of scientific study of ethnomedicinal plants. So, this study aimed to carry out the antibacterial and antioxidant activity of two medicinal plants which are used traditionally for wound healing activity, i.e.,Mimosa rubicaulis and Reinwardtia indica. Different parts of Mimosa rubicaulis (root, stem, and leaves) and Reinwardtia indica (flower and leaves) were used for the study. Extractions were done by maceration using ethanol as solvent. Antibacterial activity was carried out by the well diffusion method, and antioxidant activities were screened by DPPH radical scavenging and NO scavenging assays. Extract of M. rubicaulis has shown a weak zone of inhibition towards S. aureus and P. vulgaris whereas R. indica has shown no zone of inhibition towards selected bacterial strains. Leaf, root, and stem extracts of M. rubicaulis have shown potent antioxidant activity, i.e., IC50 value of 9.8 µg/ml, 10.19 µg/ml, and, 13.64 µg/ml, respectively. Similarly, leaf extract of R. indica exhibited antioxidant activity with an IC50 value of 19.73 μg/ml. The percentage inhibition of NO radicals of root and stem of M. rubicaulis and leaves of R. indica was 31%, 21%, and 22%, respectively. Out of these two plant species, M. rubicaulis had shown antibacterial activity towards selected microorganism, but antioxidant activity was shown by both plant species. These properties on above mentioned two plant species might help for the development of a marketed formulation for antibacterial and wound-healing agent since wound healing is promoted by antibacterial and antioxidant activities.

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In-vitro analysis of potential antibacterial activity of three medicinal plants

Journal of Applied and Natural Science ◽

10.31018/jans.v8i3.990 ◽

2016 ◽

Vol 8 (3) ◽

pp. 1497-1500

Author(s):

Vandana Gupta ◽

Rakesh Kumar ◽

Deepika Chaudhary ◽

Nirmal Yadav

Keyword(s):

Staphylococcus Aureus ◽

Antibacterial Activity ◽

Bacillus Subtilis ◽

Medicinal Plants ◽

Diffusion Method ◽

Gram Negative Bacteria ◽

Zone Of Inhibition ◽

Gram Positive ◽

Gram Negative ◽

Gram Positive Bacteria

The present study was aimed to examine and compare the antibacterial activity of hot methanolic extract of medicinal plants viz. Portulaca oleracea (purslane), Syzygium cumini (L.) (jamun), Psidium guajava (L.) (guava). Antibacterial activity was carried by using agar well diffusion method, against Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis) and Gram-negative bacteria (Escherichia coli). Results indicated that all the three plant extracts possess antibacterial property against Gram-positive bacteria and no activity was found against Gram-negative bacteria. Moderate zone of inhibition against Staphylococcus aureus and Bacillus subtilis was exhibited by S. cumini (L.) (11mm and 12mm) and P. guajava (L.) (10mm and 11mm) and weak zone of inhibition was exhibited by P. oleracea (5 mm and 6mm). In conclusion, S. cumini (L.) and P. guajava (L.) possess bettercapabilities of being a good candidate in search for natural antibacterial agent against infections and diseases causing Gram-positive bacteria as compared to P. oleracea.

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Antibacterial activity, metabolites and elemental analysis of Saussurea candicans C. B. Clarke

Current Botany ◽

10.19071/cb.2017.v8.3153 ◽

2017 ◽

Vol 8 ◽

Author(s):

Shweta Puri ◽

M.C. Sidhu ◽

Avantika Sharma

Keyword(s):

Antibacterial Activity ◽

Ethanol Extract ◽

Diffusion Method ◽

Phytochemical Analysis ◽

Bacterial Strains ◽

Zone Of Inhibition ◽

Whole Plant ◽

Ethanol Extracts ◽

The Fourier Transform ◽

Medicinal Activity

Phytochemical analysis of ethanol and water extracts of Saussurea candicans has indicated the presence of flavonoides, phenolics, tannins etc. that supports its use in traditional medicine both for human and animals in different parts of the world. S. candicans is a plant of medicinal interest hence selected for analysis. Antibacterial activity of the two extracts was tested against Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. Only the ethanol extract was found to be effective. Both aqueous and ethanol extracts were prepared and studied for different phytochemicals like alkaloids, flavonoides, phenolics, steroids etc. and also for their antibacterial activity using agar well diffusion method. The Fourier Transform Infrared (FTIR) and Wavelength Dispersive X-Ray Fluorescence (WD-XRF) spectroscopy of whole plant powder were done to study the functional groups and elemental profile, respectively. The aqueous extract contains more (11) phytochemicals as compared to ethanol (9). No zone of inhibition was observed at different volumes of the extract i. e., 20μl, 50μl and 100μl but at 150μl and 200μl concentration of 230.7 mg/ml plant extracts, the zone of inhibition was reported. The dose of 150μl concentration active only against E. faecalis, whereas, 200μl concentration showed activity against all bacterial strains. Only the ethanol extract had antibacterial activity against all the tested bacteria. The medicinal activity of S. candicans is assumed to be because of the presence of different phytochemicals and elements. Further study can be conducted to understand the role of each and every reported phytochemicals and elements.

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In-vitro Antioxidant and Antibacterial Activity of Methanolic Extract of Shorea robusta Gaertn. F. Resin

International Journal of Pharmaceutical and Phytopharmacological Research ◽

10.24896/eijppr.2016641 ◽

2016 ◽

Vol 6 (4) ◽

pp. 68

Author(s):

Sushma Vashisht ◽

Manish Pal Singh ◽

Viney Chawla

Keyword(s):

Antibacterial Activity ◽

Methanolic Extract ◽

Diffusion Method ◽

Gram Negative Bacteria ◽

Disc Diffusion ◽

Gram Positive ◽

Gram Negative ◽

Shorea Robusta ◽

Dose Dependent ◽

Resin Extract

The methanolic extract of the resin of Shorea robusta was subjected to investigate its antioxidant and antibacterial properties its utility in free radical mediated diseases including diabetic, cardiovascular, cancer etc. The methanol extract of the resin was tested for antioxidant activity using scavenging activity of DPPH (1,1-diphenyl-2-picrylhydrazil) radical method, reducing power by FeCl3 and antibacterial activity against gram positive and gram negative bacteria using disc diffusion method. The phytochemical screening considered the presence of triterpenoids, tannins and flavoniods. Overall, the plant extract is a source of natural antioxidants which might be helpful in preventing the progress of various oxidative stress mediated diseases including aging. The half inhibition concentration (IC50) of resin extract of Shorea robusta and ascorbic acid were 35.60 µg/ml and 31.91 µg/ml respectively. The resin extract exhibit a significant dose dependent inhibition of DPPH activity. Antibacterial activity was observed against gram positive and gram negative bacteria in dose dependent manner.Key Words: Shorea robusta, antioxidant, antibacterial, Disc-diffusion, DPPH.

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Antibacterial activity of magnesium oxide nanoparticles prepared by Calcination method

International Journal of Pharmaceutical Quality Assurance ◽

10.25258/ijpqa.10.3.25 ◽

2019 ◽

Vol 10 (03) ◽

Author(s):

Elaf Ayad Kadhem ◽

Miaad Hamzah Zghair ◽

Sarah , Hussam H. Tizkam, Shoeb Alahmad Salih Mahdi ◽

Hussam H. Tizkam ◽

Shoeb Alahmad

Keyword(s):

Antibacterial Activity ◽

Magnesium Oxide ◽

Diffusion Method ◽

Oxide Nanoparticles ◽

Gram Negative Bacteria ◽

Gram Positive ◽

Gram Negative ◽

Gram Positive Bacteria ◽

Magnesium Oxide Nanoparticles ◽

Agar Disc

magnesium oxide nanoparticles (MgO NPs) were prepared by simple wet chemical method using different calcination temperatures. The prepared NPs were characterized by Electrostatic Discharge (ESD), Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD). It demonstrates sharp intensive peak with the increase of crystallinty and increase of the size with varying morphologies with respect to increase of calcination temperature. Antibacterial studies were done on gram negative bacteria (E.coli) and gram positive bacteria (S.aureus) by agar disc diffusion method. The zones of inhibitions were found larger for gram positive bacteria than gram negative bacteria, this mean, antibacterial MgO NPs activity more active on gram positive bacteria than gram negative bacteria because of the structural differences. It was found that antibacterial activity of MgO NPs was found it has directly proportional with their concentration.

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Antibacterial Activity of Prismatomeris tetrandra K. Schum Root Extract against Antibiotic Resistance Bacteria

Walailak Journal of Science and Technology (WJST) ◽

10.48048/wjst.2019.6291 ◽

2018 ◽

Vol 16 (5) ◽

pp. 341-348

Author(s):

On-Anong SOMSAP

Keyword(s):

Antibacterial Activity ◽

Antibiotic Resistance ◽

Culture Broth ◽

Diffusion Method ◽

Resistant Bacteria ◽

Root Extract ◽

Gram Negative Bacteria ◽

Antibiotic Resistant ◽

Gram Positive Bacteria ◽

Colony Forming Units

Antibiotic resistance bacteria has become an increasing problem now today due to many factors. This study investigates the efficacy of Prismatomeris tetrandra K. Schum root extract as a new source of antibacterial activity for antibiotic resistant bacteria using agar well diffusion method. The results showed that S. aureus TISTR517 exhibited more sensitivity to P. tetrandra K. Schum root extract than other Gram-positive bacteria indicator strains. On the other hand, Gram-negative bacteria exhibited resistance to P. tetrandra K. Schum root extract. The study further showed the activity between P. tetrandra K. Schum root extract and gentamycin (10 µg), it revealed that MRSA142 was resistant to gentamycin (10µg) but sensitive to P. tetrandra K. Schum root extract. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) was evaluated by using S. aureus TISTR517 and MRSA142 as indicator strains. The MIC value was 0.59 mg/mL and 1.17 mg/mL for S. aureus TISTR517 and MRSA142, respectively. MBC assay demonstrated that the MBC value was 9.75 mg/mL and 150 mg/mL for S. aureus TISTR517 and MRSA142 respectively. The mode of action was investigated with the presence of P. tetrandra K. Schum root extract in the culture broth. The action of P. tetrandra K. Schum root extract was revealed of bacteriostatic activity due to the Optical density (OD) at 600 nm and Colony-Forming Units (CFU) of indicator strains were continuously decreased.

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Antibacterial Activity and Flavonoids Content of Artemisia cina Berg. ex Poljakov Ethyl Acetate Extracts

Biosaintifika Journal of Biology & Biology Education ◽

10.15294/biosaintifika.v13i1.27665 ◽

2021 ◽

Vol 13 (1) ◽

pp. 106-112

Author(s):

Sri Kasmiyati ◽

Elizabeth Betty Elok Kristiani ◽

Maria Marina Herawati ◽

Andreas Binar Aji Sukmana

Keyword(s):

Antibacterial Activity ◽

Medicinal Plant ◽

Ethyl Acetate ◽

Biological Activities ◽

Diffusion Method ◽

Gram Negative Bacteria ◽

Flavonoid Content ◽

Gram Positive ◽

Gram Negative ◽

Significant Difference

The medicinal plant-derived bioactive compounds have a potential for many biological activities, including antimicrobial activity. Artemisia cina is a medicinal plant from the Compositae family with the potential of having antitumor, antifungal, and antibacterial activity. This study aimed to determine the antibacterial activity and the flavonoid content of A. Cinaâ€™s ethyl acetate extract. Plants samples were extracted by ethyl acetate maceration method. Antibacterial activity was tested against Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus) by a disk diffusion method using 25, 50, and 100 mg/l extract concentrations. The flavonoid contents (quercetin and kaempferol) were measured using High-Performance Liquid Chromatography. The extracts of diploid and polyploid A. cina displayed some antibacterial activity, with the Gram-negative bacteria being more resistant than the Gram-positive counterpart. However, no significant difference was observed between the diploid and polyploid extracts. As for the flavonoid content, the highest quercetin content (0.5501 mg/ml) was found in the polyploid A. cina (J), while the highest kaempferol content (0.5818 mg/ml) was observed in the diploid A. cina (KJT). Although A. cina is widely grown in Indonesia, compared to other Artemisia species, A. cina has not been widely studied, especially its antibacterialÂ potential and in related to its flavonoid content and the use of ethyl acetate as the extraction solvent. Â This study reveals the potential of A. cina as a natural antibacterial agent.Â

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Giloy (Tinospora Cordifolia): In Vitro Evaluation of Antibacterial Properties

RA Journal Of Applied Research ◽

10.47191/rajar/v7i6.03 ◽

2021 ◽

Vol 07 (06) ◽

Author(s):

Tulsa Devi ◽

Keyword(s):

Antibacterial Activity ◽

Methanolic Extract ◽

Water Extract ◽

Hot Water ◽

Tinospora Cordifolia ◽

Diffusion Method ◽

Zone Of Inhibition ◽

Hot Water Extract ◽

Agar Well Diffusion Method

Antibiotic resistance has become a global concern and hence, the search for other source of antimicrobials initiated to find a way to control infections in future. The main objective of this paper is to screen Giloy (Tinospora cordifolia) for its antibacterial activity. The stem of Tinospora cordifolia is used to prepare extract for determining it’s in vitro antibacterial activity as per the agar well diffusion method. In the agar well diffusion method 100μl of 24 hr broth culture of bacteria was aseptically and evenly swabbed on Mueller Hinton agar plates. Wells of about 8 mm diameter were aseptically cut using sterile cork-borer. 100 μl of plant extracts of different concentrations were then placed into the separate wells. The plates were incubated at 37 oC for 24hr. Antimicrobial activity of the giloy was determined by measuring the diameter of zone of inhibition. The methanolic extract of Tinospora cordifolia showed 13, 11, 9 and 5 mm zone of inhibition in S. aureus cultures by using 100, 75, 50 and 25 mg/ml concentration, respectively while hot water extract of Tinospora cordifolia showed 14, 12, 10 and 8 mm zone of inhibition for S. aureus by using 100, 75, 50 and 25 mg/ml concentration, respectively and the cold extract of Tinospora cordifolia showed 10, 8, 5 and 0 mm zone of inhibition for S. aureus by using 100, 75, 50 and 25mg/ml concentration, respectively. The methanolic extract of Tinospora cordifolia indicated 12, 10, 6 and 4 mm zone of inhibition in cultures of E.coli by using 100, 75, 50 and 25 mg/ml concentration, respectively and the hot water extract of Tinospora cordifolia showed 16, 14, 12 and 10 mm zone of inhibition in cultures of E.coli by using 100, 75, 50 and 25mg/ml concentration, respectively. The cold water extract of Tinospora cordifolia showed 13, 10, 8, and 5 mm zone of inhibition in cultures of E.coli by using 100, 75, 50 and 25 mg/ml concentration, respectively. It has been observed that Tinospora cordifolia showed very promising results as indicated by the zone of inhibition of bacterial culture through agar well diffusion method that varies from few mm to few cm. This study indicates the in-vitro antibacterial effect of Giloy which needs further validation through in-vivo studies.

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