Detection of Antioxidant and Antimicrobial Activity of Leaf Extract of Jasminum azoricum

2018 ◽  
Vol 11 (8) ◽  
pp. 3629
Author(s):  
S. Thiruvengadam ◽  
S. Nivedha ◽  
V. Pujita ◽  
S. Ivo Romauld
Keyword(s):  
Antimicrobial Activity ◽  
Leaf Extract ◽  
Antioxidant And Antimicrobial Activity

scholarly journals Pharmacognostical, Phytochemical, Antioxidant and Antimicrobial Activity of Costus woodsonii

2019 ◽  
pp. 53-59
Author(s):  
Mukesh S Sikarwar ◽  
Chew Khai Szeek ◽  
Neeraj Paliwal
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Plant Extract ◽  
Total Phenolic Content ◽  
Leaf Extract ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Phytochemical Analysis ◽  
Concentration Test ◽  
Antioxidant And Antimicrobial Activity

Background: Herbal medicine mostly contains wide range of chemical compounds responsible for medicinal therapeutic use. Costus woodsonii is commonly called as Red Button Ginger and synonyms of the botanical name are Costus spiralis, Alpinia spiralis and Costus pisonis. In Malay, it is known as Setawar Halia Merah. In Chinese, it is known as Hong Bi Qiao Jiang. Objective: This research was conducted to study the pharmacognostical, phytochemical, antioxidant and antimicrobial activity of C. woodsonii leaf extracts. Method: Macroscopy, microscopy, phytochemical analysis, thin layer chromatography, antioxidant activity and antimicrobial activity of C. woodsonii leaf were carried out. Total flavonoids were estimated in the leaf extract. The total phenolic content of C. woodsonii leaf was determined using Folin-Ciocalteu reagent. The antioxidant activity of leaf extract of C. woodsonii was determined by performing DPPH radical scavenging. The microbial activity was determined by Well diffusion test, MIC (Minimum Inhibitory Concentration) test and MBC (Minimum Bactericidal Concentration) test. Result and Discussion: C. woodsonii belongs to costaceae with elliptical green leaves. Till now are no extensive studies on C. woodsonii. Preliminary phytochemical analysis revealed the presence of flavonoid, steroid, fat, phenol, tannin and mucilage in leaf extract. Physicochemical studies further revealed the ash value of leaf as 8.7%. Among the three extractions, alcohol extractive values showed the highest as 13%. Loss on drying at 105 degree Celsius in leaf was found to be 12.67%. The plant extract showed total phenolic content of 7.941 mg GAE/g at concentration of 5µg/ml. As for flavonoids content, plant extract showed 21.7 mg RE/g at concentration of 200µg/ml and 43.4 mg RE/g at concentration of 400µg/ml. For antioxidant activity, the plant extract showed weak antioxidant activity in DPPH scavenging activity assay. For antimicrobial test, the leaf extract of C. woodsonii showed weak antimicrobial activity. Conclusion: From this study, it can conclude that C. woodsonii leaf extract possess weak antioxidant activity and weak antimicrobial activity which need to be further validated by using more antioxidant assays and antimicrobial tests.

scholarly journals Phenolic Composition, Antioxidant and Antimicrobial Activity of Cotoneaster Medik. Species from Bosnia and Herzegovina

2020 ◽  
Keyword(s):  
Antimicrobial Activity ◽  
Leaf Extract ◽  
Acetylcholinesterase Inhibition ◽  
Bacterial Strains ◽  
Methanolic Extracts ◽  
Microbial Strains ◽  
Inhibition Zones ◽  
Antioxidant And Antimicrobial Activity ◽  
Antibacterial And Antifungal ◽  
Ornamental Species

Although the genus Cotoneaster Medik. includes mainly ornamental species, there are some data regarding its biological activity. The purpose of this study was to analyze the content of phenolic compounds, acetylcholinesterase inhibition, antioxidant and antimicrobial activity of methanolic extracts of leaf and bark of C. integerrimus Medik., C. tomentosus (Aiton) Lindl. and C. horizontalis Decne. The C. tomentosus leaf extract exhibited the highest content of total phenols (135.86 mg GAE/g) and flavonoids (18.17 mgQE/g), and also the most potent antioxidant activity against nonbiogenic free radicals, while the highest inhibition of acetylcholinesterase had the leaf extract of C. horizontalis (IC50 0.34 mg/mL). All extracts showed a significant level of antibacterial and antifungal activity against tested microbial strains. The largest inhibition zones were observed against Candida albicans treated with C. integerrimus leaf extract (30.50±0.50 mm). Furthermore, C. integerrimus extract was the most effective in the majority of bacterial strains tested. The results indicated that methanolic extracts of the investigated Cotoneaster species have promising bioactive and therapeutic potentials

Cytotoxic, Antioxidant and Antimicrobial Activity of Polygonum Chinensis Linn

2012 ◽  
Vol 4 (4) ◽  
pp. 1569-1574
Author(s):  
Srividya A.R. ◽  
A Shalom ◽  
Chandrasekhar R ◽  
Vijayan P ◽  
V.J Vishnuvarthtan
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Leaf Extract ◽  
Dilution Method ◽  
Cytotoxicity Studies ◽  
Ic50 Value ◽  
The Family ◽  
Stem Extract ◽  
Serial Dilution Method ◽  
Antioxidant And Antimicrobial Activity

Polygonum chinensis linn belongs to the family Polygonaceae. The plant used in this study was shade dried and extracted with methanol by a cold maceration process. Qualitiave phytochemicals estimation showed the presence of the majority of compounds including terpinoids, flavonoids, tannins, saponins and glycosides. All the extracts showed moderate inhibition ranged from 12- 14 mm against both Gram-positive and Gram-negative strains and 00-21 mm against fungal trains.  In the two-fold serial dilution method, the minimum inhibitory concentration of the extract ranges between 250 – >1000 µg/ml.  The leaf extract of polygonum chinensis showed the potent activity with an IC50 value of 18.59 ± 0.356 µg/ml. In DPPH, the lipid peroxidation and hydrogen peroxide method, the leaf extract showed potent antioxidant activity. Root and stem extract showed moderate antioxidant activity. All the extracts showed moderate cytotoxicity to all the five cell lines Vero, A-549, L6, BRL, 3A and L-929 with CTC50 value ranging from 400-125 µg/ml. Short-term cytotoxicity studies were conducted for all the extracts against (Dalton Lymphocytes ascites) cells.  The CTC50 value was found to be 435 µg/ml. Thus, the extracts of P. Chinensis may possess cytotoxic, antioxidant and antimicrobial activity.   

scholarly journals ANTIOXIDANT AND ANTIMICROBIAL ACTIVITY OF Brunfelsia uniflora LEAF EXTRACT

2019 ◽  
Vol 21 (3) ◽  
Author(s):  
Leticia de Cássia Thiesen ◽  
Itaruã Marchri Colla ◽  
Glacy Jaqueline Silva ◽  
Mariane Gamba Kubiak ◽  
Maria Graciela Iecher Faria ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Leaf Extract ◽  
Antioxidant Activities ◽  
Ethanolic Extract ◽  
Phytochemical Analysis ◽  
Food Industries ◽  
E Coli ◽  
Microdilution Method ◽  
Broth Microdilution Method ◽  
Antioxidant And Antimicrobial Activity

Finding bioactive compounds with antimicrobial and antioxidant capacity from natural sources has been a challenge., mainly due to the increase in microbial resistance. This study aimed at prospecting the main classes of secondary metabolites and the antioxidant and antimicrobial activity of Brunfelsia uniflora leaf extract. The ethanolic extract was obtained by dynamic maceration with solvent, and the antioxidant activity was analyzed using the DPPH (2,2-diphenyl-1-picrylhydrazyl) method. The antimicrobial activity was evaluated against Escherichia coli, Staphylococcus aureus, and Candida albicans by broth microdilution method. The phytochemical analysis of B. uniflora leaf extract showed the presence of saponins, tannins and alkaloids. The extract presented minimum inhibitory concentration of 62.5 mg/mL for E. coli. The 1.49 mg/mL extract concentration inhibited 50% of free radicals in the DPPH solution at 60 µM. The antimicrobial and antioxidant activities of this plant extract were the basis of studies to develop applications in the pharmaceutical, cosmetics and food industries.

Antioxidant and antimicrobial activity of willow herb (Epilobium angustifolium L.)

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
I Kosalec ◽  
M Zovko ◽  
K Sankovic ◽  
D Kremer ◽  
S Pepeljnjak
Keyword(s):  
Antimicrobial Activity ◽  
Epilobium Angustifolium ◽  
Antioxidant And Antimicrobial Activity

Green Synthesis of Silver Nanoparticles by Allamanda cathartica L. Leaf Extract and Evaluation for Antimicrobial Activity

2013 ◽  
Vol 6 (4) ◽  
pp. 2260-2268
Author(s):  
M. Linga Rao ◽  
Bhumi G ◽  
Savithramma N
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Fusarium Species ◽  
Inhibition Zone ◽  
Fungal Species ◽  
Green Technology ◽  
Metallic Silver ◽  
Synthesis Of Nanoparticles ◽  
Aqueous Leaf Extract

Silver nanoparticles (SNPs) exhibit tremendous applications in medicine as antimicrobial agent.  The use of different parts of plants for the synthesis of nanoparticles is considered as a green technology as it does not involve any harmful chemicals.  In the present study, we report a rapid biosynthesis of silver nanoparticles from aqueous leaf extract of medicinal plant Allamanda cathartica.  The active phytochemicals present in the plant were responsible for the quick reduction of silver ion to metallic silver nanoparticles. The reduced silver nanoparticles were characterized by using UV-Vis spectrophotometry, Scanning Electron Microscope (SEM), Energy Dispersive Analysis of X-ray (EDAX) and Atomic Force Microscopy (AFM).  The spherical shaped silver nanoparticles were observed and it was found to 19-40 nm range of size.  These phytosynthesized SNPs were tested for their antimicrobial activity and it analyzed by measuring the inhibitory zone. A. cathartica aqueous leaf extract of SNPs showed highest toxicity to Pseudomonas followed by Klebsiella, Bacillus and E. coli and lowest toxicity towards Proteus. In fungal species, highest inhibition zone was noted against Rhizopus followed by Curvularia, Aspergillus flavus and Aspergillus niger and minimum inhibition zone was observed against Fusarium species.  These results suggest a promising potential of Indian plant-based green chemistry for production of SNPs for biomedical and nanotechnology applications.

The Comparative Study of Equisetum pratense, E. sylvaticum, E. telmateia: Accumulation of Silicon, Antioxidant and Antimicrobial Screening

2019 ◽  
Vol 70 (7) ◽  
pp. 2519-2523
Author(s):  
Denisa Batir Marin ◽  
Oana Cioanca ◽  
Mihai Apostu ◽  
Cristina Gabriela Tuchilus ◽  
Cornelia Mircea ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Methanol Extract ◽  
Previous Treatment ◽  
Total Phenolic ◽  
Quantitative Chemical Analysis ◽  
Qualitative And Quantitative ◽  
Antioxidant And Antimicrobial Activity ◽  
The Comparative Study

The objective of the current study is represented by the determination of silica and a phytochemical screening of phenolic derivates of some Equisetum species. The antioxidant and antimicrobial activity for Equisetum pratense Ehrh.,, Equisetum sylvaticum L. and Equisetum telmateia Ehrh. (sin. Equisetum maximum Lam.) were also investigated. The concentration of silicon (Si) in plants was determined by the spectrophotometric method using previous treatment with NaOH 50% both for the stem and the nodal branches [1]. Results obtained varied from 95.12 to 162.10 SiO2 mg/g dry plant which represents 4.44% to 7.58% Si/100g dry sample. Two types of total extracts were obtained using different solvents and were subjected to qualitative and quantitative chemical analysis considering total phenolic content [2]. The highest concentration of investigated compounds was found in the methanolic extract, E. sylvaticum, 196.5mg/g dry sample. Antioxidant activity was monitored spectrophotometrically and expressed in terms of IC50 (�g/mL) [3]. Values gathered ranged from 261.7 to 429.5 �g/mL. The highest capacity to neutralized DPPH radicals was found in E. sylvaticum. In vitro antimicrobial activity was determined using difusimetric method [4]. Testing was performed on four microorganisms: three strains of bacteria and one species of fungi. Different effects were noticed against the bacteria, furthermore the methanol extract appeared to be most efficient. All extracts showed significand antimicrobial activity against Staphylococcus aureus (ATCC 25923) and Candida albicans (ATCC 90028) and weak to no activity against Pseudomonas aeruginosa (ATCC 27853) and Escherichia coli (ATCC 25922).

scholarly journals Green Biosynthesis of Silver Nanoparticles Using Leaf Extract of Carissa carandas L. and Their Antioxidant and Antimicrobial Activity against Human Pathogenic Bacteria

Biomolecules ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 299
Author(s):  
Reetika Singh ◽  
Christophe Hano ◽  
Gopal Nath ◽  
Bechan Sharma
Keyword(s):  
Silver Nanoparticles ◽  
Pathogenic Bacteria ◽  
Leaf Extract ◽  
Room Temperature ◽  
Xrd Analysis ◽  
Antibacterial Activities ◽  
Effect Of Temperature ◽  
Human Pathogenic Bacteria ◽  
Carissa Carandas ◽  
Antioxidant And Antimicrobial Activity

Carissa carandas L. is traditionally used as antibacterial medicine and accumulates many antioxidant phytochemicals. Here, we expand this traditional usage with the green biosynthesis of silver nanoparticles (AgNPs) achieved using a Carissa carandas L. leaf extract as a reducing and capping agent. The green synthesis of AgNPs reaction was carried out using 1mM silver nitrate and leaf extract. The effect of temperature on the synthesis of AgNPs was examined using room temperature (25 °C) and 60 °C. The silver nanoparticles were formed in one hour by stirring at room temperature. In this case, a yellowish brown colour was developed. The successful formation of silver nanoparticles was confirmed by UV–Vis, Fourier transform infrared (FT-IR) and X-ray diffraction (XRD) analysis. The characteristic peaks of the UV-vis spectrum and XRD confirmed the synthesis of AgNPs. The biosynthesised AgNPs showed potential antioxidant activity through DPPH assay. These AgNPs also exhibited potential antibacterial activity against human pathogenic bacteria. The results were compared with the antioxidant and antibacterial activities of the plant extract, and clearly suggest that the green biosynthesized AgNPs can constitute an effective antioxidant and antibacterial agent.

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