scholarly journals An ethno medicinal plant: Antibacterial activities of Stachys lavandulifolia Vahl aqueous extract against common pathogens

2021 ◽  
Vol 3 (1) ◽  
pp. 0-0
Author(s):  
Hori Ghaneialvar ◽  
Naser Abbasi ◽  
Sania Saneei ◽  
akram Zangeneh ◽  
Mohammad Mahdi Zangeneh ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Aqueous Extract ◽  
Antibacterial Activities

Effects of the aqueous extract of Dicliptera verticillata on fertility and different stages of gestation in female rats

Zygote ◽  
2021 ◽  
pp. 1-7
Author(s):  
Stéphanie Ouabo Meguem ◽  
Landry Lienou Lienou ◽  
Marie Stéphanie Chekem Goka ◽  
Richard Simo Tagne ◽  
Didiane Mefokou Yemele ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Aqueous Extract ◽  
Implantation Rate ◽  
The Other ◽  
Female Rats ◽  
High Dose ◽  
Immature Female ◽  
Implantation Sites ◽  
Parameters Analysis ◽  
Hepatic Proteins

Summary Dicliptera verticillata is a medicinal plant traditionally used in western Cameroon to cure female infertility. This experiment was designed to assess the effects of the aqueous extract of Dicliptera verticillata (AEDv) on fertility and gestation in female rats. Oral increasing doses of AEDv were administered to immature female rats over 20 d. After this time, some animals were mated with fertile males and some fertility parameters were assayed; the other animals were euthanized for preliminary toxicity parameters analysis. The effects of AEDv on the different stages of gestation were assayed on selected animals previously controlled for estrous cycle regularity and mated. AEDv led to an increase in serum, uterine and ovarian proteins as well as in ovarian and uterine weights (P < 0.05) in immature female rats. Hepatic proteins significantly decreased (P < 0.01) in high dose-treated animals (50 and 100 mg/kg) compared with controls. The number of implantation sites and the fertility rate were significantly lower (P < 0.05), while the antifertility activity increased significantly (P < 0.05) in treated rats compared with controls. When administered from the 1st to the 5th day of pregnancy, AEDv led to a decrease of more than 60% in the implantation rate in high dose-treated rats (50, 100, and 400 mg/kg). From the 6th to the 9th day, the implantation, gestation rates and the number of fetuses decreased significantly in all treated groups. From the 11th to the 20th day, a 50% resorption and decrease in gestation rate were reported in 50 mg/kg dose-treated animals. AEDv possesses weak contraceptive and abortifacient effects during pregnancy.

Polyphenol Contents, Antioxidant and Antibacterial Activities of Aqueous Algerian Propolis Extracts

2021 ◽  
Author(s):  
E.K. Soltani ◽  
K. Zaim ◽  
K. Mokhnache ◽  
N. Haichour ◽  
S. Mezaache-Aichour ◽  
...  
Keyword(s):  
Aqueous Extract ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Antibacterial Properties ◽  
Natural Antioxidants ◽  
Antibacterial Activities ◽  
Antimicrobial Activities ◽  
Biological Properties ◽  
Aqueous Extracts

The propolis, an extremely complex resinous material, exhibits valuable pharmacological and biological properties, mainly attributed to the presence of polyphenols. The composition of propolis depends on time, vegetation, and the area of collection. Total flavonoid and polyphenol contents of aqueous extracts of propolis samples from different areas of Algeria, determined by using aluminum chloride and Folin–Ciocalteu colorimetric methods, were in the range of 3.047 ± 0.004–5.273 ± 0.013 mg/g and 96.833 ± 0.027–458.833 ± 0.0005 mg/g crude extract of propolis, respectively. This study examined the antioxidant and antimicrobial activities of propolis. Aqueous extracts of propolis were obtained in order to evaluate their antioxidant activities by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging, β-carotene and electrochemical assays. All tested propolis samples had relatively strong antioxidant activities, which were also correlated with the total polyphenol and flavonoid content present. The percentage of inhibition of lipid peroxidation of linoleic acid emulsion during 24 h varied between 86.04 ± 0.42 and 90.60 ± 3.77% among the tested samples. The highest DPPH radical scavenging activity was observed by ABAL (Ain Abassa Aqueous Extract) with IC50 = 8.49 ± 5.07 10−5 μg/ml, and the lowest was observed by SAL (Setif Aqueous Extract) with IC50 of 21.16 ± 0.0001 μg/ml. The most important antibacterial activity was obtained with Ain Abassa extract; the zones of inhibition obtained for this excerpt vary from 15.22 to 15.5 mm. Followed by the Setif extract with areas of 12.33 to 12.75 mm, the Tizi-Ouzou extract with areas of 10.11 to 11.11 mm. This study will bring an innovation for further studies with regard to the antioxidant and antibacterial properties of the aqueous extracts of propolis. This study corroborates that Algerian propolis is a rich source of natural antioxidants, properties which could be used in the prevention of different diseases, both in humans and in animals.

Monoterpenes with antibacterial activities from a Cameroonian medicinal plant Canthium Multiflorum (Rubiaceae)

Fitoterapia ◽  
2013 ◽  
Vol 91 ◽  
pp. 199-204 ◽  
Author(s):  
Simeon Fogue Kouam ◽  
Alain Wembe Ngouonpe ◽  
Anke Bullach ◽  
Marc Lamshöft ◽  
Guy Merlin Kuigoua ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Antibacterial Activities

In vitro antifilarial activity of extracts of the medicinal plant Cardiospermum halicacabum against Brugia pahangi

2000 ◽  
Vol 74 (3) ◽  
pp. 241-246 ◽  
Author(s):  
W. Khunkitti ◽  
Y. Fujimaki ◽  
Y. Aoki
Keyword(s):  
Medicinal Plant ◽  
Aqueous Extract ◽  
Mtt Assay ◽  
Ethanol Extract ◽  
Aqueous Extracts ◽  
Adult Males ◽  
Brugia Pahangi ◽  
Ethanol Extracts ◽  
Antifilarial Activity

AbstractThe in vitro effects of ethanol and aqueous extracts of the medicinal plant Cardiospermum halicacabum on adult worms and microfilariae of Brugia pahangi were investigated. With or without the plant extracts in culture medium, the motility of adult worms, microfilariae and microfilarial release from female worms were monitored daily. After 7 days of culture, viability or tissue damage of adult worms was assessed using the MTT assay. At > 500 μg ml-1, the aqueous extract significantly reduced motility of adult females after 24 h of exposure and adult males after 3 days. The aqueous extract, at > 500 μg ml-1, also significantly reduced microfilarial release from female worms, starting on day 2. The reduction in the motility of adult worms and the pattern of microfilarial release from female worms were concentration and time dependent. The MTT assay results revealed that adult worms cultured in the presence of aqueous extracts at > 500 μg ml-1 were damaged. However, the aqueous extract did not affect the motility of microfilariae with the exception of those in higher concentration extracts. Higher concentrations of ethanol extracts (2 mg ml-1) inhibited both the motility of adult worms and the release of microfilariae from females. Little effect of ethanol extracts was detected by the MTT assay, as only slight damage was caused to worms exposed only to the highest concentration (2 mg ml-1). However, ethanol extract at 500 μg ml-1 rapidly reduced the motility of microfilariae on day 2. The present study revealed that an aqueous extract of C. halicacabum has mild but definite direct macrofilaricidal action on B. pahangi.

scholarly journals Antibacterial activities and phytochemical screening of crude extract of Carica papaya leaf against selected pathogens

2020 ◽  
Vol 26 (2) ◽  
pp. 165-170
Author(s):  
A.E. Ajiboye ◽  
R.A. Olawoyin
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Klebsiella Pneumoniae ◽  
Aqueous Extract ◽  
Carica Papaya ◽  
Antibacterial Activities ◽  
Phytochemical Screening ◽  
Zone Of Inhibition ◽  
Crude Extracts ◽  
Test Organisms

Carica papaya commonly known as paw paw belongs to the family of Curcubitaceae and commonly grown in tropical regions. It possesses  antimicrobial, antihelmintic and antioxidant properties. The study assessed the antibacterial potency of Carica papaya against Escherichia coli, Klebsiella pneumoniae and Staphylococcus aureus. Acetone and aqueous extracts of the leaves of Carica papaya were obtained using standard methods. The antibacterial activity of the extracts was done using agar well diffusion methods. The Minimum inhibitory and Minimum bactericidal concentrations were done using standard procedures. The antibacterial activities of the crude extracts of Carica papaya against the test organisms revealed that acetone extract showed maximum zone of inhibition on Staphylococcus aureus with a diameter of 17.90±0.10mm at 500 mg/ml and the lowest inhibitory effect on Klebsiella pneumoniae with a zone of 6.50±0.50mm at 100 mg/ml, the aqueous extract showed maximum zone of  inhibition on Staphylococcus aureus with a diameter of 15.50±0.50mm at 500 mg/ml and the lowest zone of inhibition was on Staphylococcus aureus with a diameter of 6.50±0.50mm at 100 g/ml. The Minimum Inhibitory Concentration of acetone and aqueous extract was 40 mg/ml and 50mg/ml against Klebsiella pneumoniae respectively. The Minimum Bactericidal Concentration of the extracts ranges from 40-60mg/ml. The qualitative  phytochemical screening result revealed the presence of tannins, saponnin, alkaloids and steroid. The quantitative phytochemicals revealed 0.70%  of flavonoids, 0.48% of alkaloids, 1.02% of tannin, 0.11% of steroids and 1.08% of glycoside. The result obtained revealed that crude extracts of Carica papaya leaves has antibacterial activities against the test organisms. Keywords: Carica papaya, Phytochemical screening, Pathogens, Antibacterial  activity

scholarly journals Exploring the Molecular Mechanisms of Action of Samoan Medicinal Plants via Chemical Genetic Analyses

2021 ◽  
Author(s):  
◽  
Seeseei Molimau-Samasoni
Keyword(s):  
Natural Products ◽  
Medicinal Plants ◽  
Medicinal Plant ◽  
Aqueous Extract ◽  
Mechanism Of Action ◽  
Condensed Tannin ◽  
Iron Chelation ◽  
Yeast Cells ◽  
Intracellular Iron ◽  
Drug Leads

<p>Natural products are a robust source of drug leads, and medicinal plants have been the source of natural products that are important pharmaceuticals in modern medicine. Samoan medicinal plants have been investigated in the past, but their potential as a source of new drug leads has not been realized. I hypothesized that determining the mechanism of action of Samoan medicinal plant extracts would provide insight into their pharmaceutical potential. The work described herein was carried out on 11 Samoan medicinal plants, from which 22 extracts were prepared. A bioactivity rate of 68% was determined when 15 of the 22 extracts inhibited the growth of yeast (Saccharomyces cerevisiae). The medicinal plant Psychotria insularum was the most potent, thus genome-wide analyses were completed using the haploid deletion mutant library of S. cerevisiae. Yeast strains deficient in iron transport were hypersensitive to the P. insularum aqueous extract. Further investigations showed that exogenous iron supplementation rescued the growth defect induced by P. insularum extracts, suggesting that P. insularum reduced intracellular iron. Fittingly, yeast cells treated with P. insularum extracts contained less intracellular iron than control cells. Paraxodically, the expression levels of iron transporter proteins were upregulated upon extract treatment. When we investigated iron-requiring cellular processes, we found that yeast cells treated with P. insularum extracts exhibited a respiratory deficient phenotype and reduced heme synthesis, indicative of an impaired cellular iron status. These findings suggested that P. insularum reduced bioavailable iron leading to the induction of the low iron response, and indeed the extracts of P. insularum were shown to chelate iron via the iron-chelating CAS assay. To translate results from yeast to mammalian cells, we treated primary murine macrophages with P. insularum extracts and detected an anti-inflammatory response, which we found to correlate with reduced activity of the iron-requiring aconitase enzyme. We further determined using pooled diploid mutant genetic analyses that the extracts of P. insularum did not have a genetic target. To identify the compound mediating the iron chelation mechanism, bioassay-guided isolation was conducted. Fractionation of the crude aqueous extract of P. insularum produced a relatively pure fraction that NMR and the acid-butanol assay identified as a condensed tannin. Together, these results indicate a relationship between iron chelation, a condensed tannin and inflammation. Further, we established an iron chelation mechanism of action by which P. insularum extracts are used to treat inflammation-associated symptoms in traditional Samoan medicine. Lastly, the findings presented here substantiate the reliability of plants with ethnobotanical background as sources for bioactive natural products.</p>

scholarly journals Efficacy of Aqueous Extract of Pistia Stratiotes (Water Lettuce) Against some Tropical Fish Bacterial

2021 ◽  
Author(s):  
Adelakun Kehinde Moruff ◽  
Halidu Shafiu Kilishi ◽  
Fajobi Enobong Aloysious ◽  
Joshua Deji Abiodun
Keyword(s):  
Pseudomonas Fluorescens ◽  
Aqueous Extract ◽  
Aeromonas Hydrophila ◽  
Antibacterial Activities ◽  
Salmonella Typhi ◽  
Tropical Fish ◽  
Pistia Stratiotes ◽  
Significant Activity ◽  
Water Lettuce ◽  
Fish Pathogens

Background: The study was undertaken to determine the phytochemical screening and the antibacterial activities of Pistia stratiotes (water lettuce) against some clinically isolated fish pathogens. Methods: The healthy and disease free plants samples were collected from Jebba Upper Basin of River Niger and tested for their antibacterial activities and phytochemical properties. Pistia stratiotes aqueous extract was extracted using sterile distilled water. The Agar diffused methods were used to determine the antimicrobial actions of the plant against fish pathogens of Pseudomonas fluorescens, Escherichia coli, Salmonella typhi, Aeromonas hydrophila, and Vibrio anguillarum. Results: The antibacterial investigation of aqueous extracts revealed the significant activity against these bacterial. Moreover, phytochemical examination of the crude extract showed the occurrence of saponins, alkaloids, tannins, anthraquinones, flavonoids, and catechins, which completely inhibited the growth of V. anguillarum and E. coli. However, Salmonella typhi, Pseudomonas fluorescens, and Aeromonas hydrophila exhibited moderate varying levels of resistance. Conclusion: The finding of this study showed that bioactive resistance from Pistia stratiotes can help disrupt the activities of various fish bacterial in aquaculture practices

scholarly journals Antibacterial Potential of Ethanolic and Aqueous Extracts of Carica papaya Leaves

2020 ◽  
pp. 33-38 ◽  
Author(s):  
Augustine I. Airaodion ◽  
John A. Ekenjoku ◽  
Ime U. Akaninyene ◽  
Anthony U. Megwas
Keyword(s):  
Aqueous Extract ◽  
Carica Papaya ◽  
Ethanolic Extract ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Aqueous Extracts ◽  
Filter Paper Disc ◽  
E Coli ◽  
Zones Of Inhibition ◽  
Antibacterial Potential

Background: The search for newer sources of antibiotics is a global challenge pre-occupying research institutions, pharmaceutical companies and academia, since many infectious agents are becoming resistant to synthetic drugs. Aim: This present study sought to investigate the antibacterial potential of ethanolic and aqueous extracts of Carica papaya leaves. Materials and Methods: Fresh and healthy leaves of C. papaya were harvested, air dried and milled into powder. The powder was extracted using ethanol and water as solvents. The antibacterial activities of both extracts were determined by diffusion method. Nutrient agar medium was prepared using standard method. Pure cultures of Coliform bacillus, Staphylococcus epidermidis, Streptococcus viridans, Salmonella typhi and Escherichia coli were obtained from the Department of Veterinary Microbiology and Parasitology, Federal University of Agriculture, Abeokuta, Nigeria. The extracts were serially diluted to obtain 1.0%, 0.5%, 0.25% and 0.125% solutions in sterile test tubes. Sterilized 9 mm filter paper disc soaked in the diluted extracts were placed on the plate and incubated for 24 hours at room temperature. The plates were examined for clear zones of inhibition. Presence of zones of inhibition indicated activity. Results: the results showed that both ethanolic and aqueous extracts of C. papaya leaves exhibit antibacterial activities against C. bacillus, S. epidemidis, S. viridans and E. coli and also inhibited their growth. The effect of the ethanolic extract was greater than that of the aqueous extract. However, this activity was not observed with S. typhi. Conclusion: The result of the present study showed that C. papaya leaves might effectively inhibit the growth of C. bacillus, S. epidemidis, S. viridans and E. coli but not that of S. typhi. However, the ethanolic extract is more potent than the aqueous extract.

Phytochemical profiles and antimicrobial activities of garlic bulb extracts: Traditional medicinal plant in Maiduguri, Borno State

2021 ◽  
Vol 1 (1) ◽  
pp. 008-011
Author(s):  
Fatima Adamu Lawan ◽  
Ibrahim Yusuf Ngoshe ◽  
Binta Baba Shehu ◽  
Ali AG Benisheikh ◽  
Abdullahi Abdulkadir ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Ethyl Acetate ◽  
Bacterial Species ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Antimicrobial Activities ◽  
Antibacterial Drug ◽  
Garlic Bulb ◽  
Phytochemical Profile ◽  
Phytochemical Profiles

The aim of present study was to assess phytochemical profile and antibacterial activities of some selected bacterial species. All the bacteria species tested showed higher inhibition zone varying from 20mm-27mm with 100mg/ml of ethyl acetate, methanol, Hexane and chloroform respectively. Moreover, the phytochemical profile revealed the presence of steroids, alkaloids, flavonoids and tannin in the extracts. Thus, result of this study showed that Garlic bulb extract could be a good candidate for production of synthetic antibacterial drug for the treatment of infections caused by the organisms used in this study.

Chemical composition, antioxidant and antibacterial activities of the essential oils of medicinal plant Ammodaucus leucotrichus from Algeria

2016 ◽  
Vol 29 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Dahmane Dahmane ◽  
Tahar Dob ◽  
Soumeya Krimat ◽  
Ahmed Nouasri ◽  
Hafidha Metidji ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Medicinal Plant ◽  
Essential Oils ◽  
Antibacterial Activities
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