scholarly journals Phytochemical Constituents and Antioxidant Properties of Aqueous Leaf Extract of <i>Myrianthus arboreus</i>

2017 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
Awodi Patience Ilecholubo
Keyword(s):  
Leaf Extract ◽  
Antioxidant Properties ◽  
Aqueous Leaf Extract ◽  
Phytochemical Constituents

Preliminary Phytochemical Screening of Leaves of Ocimum tenuiflorum

2021 ◽  
Vol 1 (30) ◽  
pp. 63-66
Author(s):  
Shweta Tyagi I.P.Pandey
Keyword(s):  
Secondary Metabolites ◽  
Leaf Extract ◽  
Antioxidant Properties ◽  
Fats And Oils ◽  
Phytochemical Screening ◽  
The People ◽  
Ocimum Tenuiflorum ◽  
Phytochemical Constituents ◽  
Clinical Drugs ◽  
Clinical Drug

Abstract-The medicinal plants are useful for healing and curing of human diseases. Over 55% of all modern clinical drugs are of natural product origin. The plant, Ocimum tenuiflorum is highly used by the people of whole world specially Indians to cure various disorders because of the presence of phytochemical constituents. Ocimum tenuiflorum plant is known to possess anticancer, antispasmodic, antiviral, insecticide, antiseptic, analgesic, antiinflammatory, antimicrobial, antistress, Immunomodulatory, hypotensive and antioxidant properties. The present study reveals that various secondary metabolites such as glycosides, alkaloids, flavonoids, phenols, terpenoids, tannins, saponins, antraquenone , fats and oils and steroids are present in different leaf extract of the plant. Keywords: Ocimum tenuiflorum , secondary metabolites, clinical drug

scholarly journals Phytochemical Profiling and Antioxidant Activity of Aqueous Leaf Extract of Vitex negundo

2021 ◽  
pp. 22-32
Author(s):  
Govindarajan Umamaheswari ◽  
Kuppusamy Selvam ◽  
Palanisamy Prakash
Keyword(s):  
Vitamin C ◽  
Leaf Extract ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Vitex Negundo ◽  
Strong Activity ◽  
Aqueous Leaf Extract ◽  
Phytochemical Constituents ◽  
High Level ◽  
Antioxidant Mechanisms

Natural products from plants, animals and minerals are the basis for treating human diseases. The present investigation explains that the antioxidant potential of aqueous extract of vitex negundo leaves.  Phytochemical constituents, total phenolic and flavanoid content of aqueous analysis and   vitro methods such as 1,1-diphenyl-2picrylhydrazyl (DPPH), 2,2-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radical scavenging assays and GC_MS studies are reported.  In addition, TPC and TFC of the extract were evaluated. It was observed that the leaf extract total phenol (14.3 mg) and flavanoids (8.5 mg) Quercetin equivalent (Q/g)  high level of Phenolic and flavonoid content that might have accounted for the strong activity observed ABTS 62% of inhibition  µg/ mL almost equivalent to that of standard vitamin C  and DPPH value of 66.32 µg/ mL almost equivalent to that of standard vitamin C  results revealed that leaves of vitex negundo have  Since this investigation is a preliminary study, a detailed study of the antioxidant mechanisms of specific phenol components is an absolute necessity. Many phytochemical constituents which may be responsible for many pharmacological activities.

Evaluation of the Antihyperlipidemic and Antioxidant Properties of the Aqueous Leaf Extract of Camellia sinensis in Oil-induced Hyperlipidemic Rats

2017 ◽  
Vol 1 (4) ◽  
pp. 176-181
Author(s):  
Mbang Owolabi ◽  
◽  
Grace Ukpo ◽  
Celina Ogah ◽  
Olaronke Oloruntoba ◽  
...  
Keyword(s):  
Camellia Sinensis ◽  
Leaf Extract ◽  
Antioxidant Properties ◽  
Aqueous Leaf Extract

scholarly journals Plant-Based Synthesis of Zinc Oxide Nanoparticles (ZnO-NPs) Using Aqueous Leaf Extract of Aquilegia pubiflora: Their Antiproliferative Activity against HepG2 Cells Inducing Reactive Oxygen Species and Other In Vitro Properties

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Hasnain Jan ◽  
Muzamil Shah ◽  
Anisa Andleeb ◽  
Shah Faisal ◽  
Aishma Khattak ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Leaf Extract ◽  
Antioxidant Properties ◽  
Aqueous Dispersion ◽  
Inhibitory Response ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Aqueous Leaf Extract

The anti-cancer, anti-aging, anti-inflammatory, antioxidant, and anti-diabetic effects of zinc oxide nanoparticles (ZnO-NPs) produced from aqueous leaf extract of Aquilegia pubiflora were evaluated in this study. Several methods were used to characterize ZnO-NPs, including SEM, FTIR, XRD, DLS, PL, Raman, and HPLC. The nanoparticles that had a size of 34.23 nm as well as a strong aqueous dispersion potential were highly pure, spherical or elliptical in form, and had a mean size of 34.23 nm. According to FTIR and HPLC studies, the flavonoids and hydroxycinnamic acid derivatives were successfully capped. Synthesized ZnO-NPs in water have a zeta potential of -18.4 mV, showing that they are stable solutions. The ZnO-NPs proved to be highly toxic for the HepG2 cell line and showed a reduced cell viability of 23.68 ± 2.1 % after 24 hours of ZnO-NP treatment. ZnO-NPs also showed excellent inhibitory potential against the enzymes acetylcholinesterase (IC50: 102 μg/mL) and butyrylcholinesterase (IC50: 125 μg/mL) which are involved in Alzheimer’s disease. Overall, the enzymes involved in aging, diabetes, and inflammation showed a moderate inhibitory response to ZnO-NPs. Given these findings, these biosynthesized ZnO-NPs could be a good option for the cure of deadly diseases such as cancer, diabetes, Alzheimer’s, and other inflammatory diseases due to their strong anticancer potential and efficient antioxidant properties.

scholarly journals Qualitative Phytochemical Screening, GCMS Studies and In-Vitro Anti-Oxidative Properties of Aqeuous Leaf Extract of Gnetum africanum

2020 ◽  
Vol 10 (1) ◽  
pp. 11-17
Author(s):  
A.S. Ezekwe ◽  
P.C. Ugwuezumba ◽  
P. Nwankpa ◽  
J.N. Egwurugwu ◽  
C.N. Ekweogu ◽  
...  
Keyword(s):  
Leaf Extract ◽  
Antioxidant Properties ◽  
Antioxidant Property ◽  
Phytochemical Screening ◽  
Standard Drug ◽  
Standard Procedures ◽  
Anti Oxidant ◽  
Aqueous Leaf Extract ◽  
Dpph Scavenging

This study aimed at carrying out a qualitative phytochemical screening, GC-MS studies and in-vitro antioxidant properties of aqueous leaf extract of Gnetum africanum. The qualitative phytochemical screening of the aqueous leaf extract of Gnetum africanum was done using standard procedures and revealed the presence of terpenoids, saponins, tannins, steroids, flavonoids, alkaloids, cardiac glucosides and phenols. The GC-MS screening revealed the presence of 14 compounds, 6 out of the 14 compounds were most prominent. The compound with the highest percentage peak area was caffeine with peak area of 96.9%, followed by n-Hexadacanotic acid with peak area of 60.9%, 2-methoxy-4-vinylphenol with peak area of 55.9%, tetradacanoic acid with peak area of 50.3%, cyclopentaneundecanoic acid with peak area of 47.8% and 2-cyclo-penten-1-2-hydroxy with peak area of 43.6% respectively. In-vitro determination of antioxidant property of leaf extract of Gnetum africanum was done photometrically using 2,2-dyhenyl-l-picrylhydrazyl (DPPH) assay. The DPPH scavenging ability of the leaf extract (43.2, 60.5, 68.8, and 75.7) was statistically significant at p<0.05 when compared with the standard drug ascorbic acid (81.1, 82.6, 85.1, and 90.4) % at 10, 20, 30 and 40 mg/l. In conclusion, the leaf extract of Gnetum africanum is loaded with a host of important phytochemicals and has antioxidant properties which increase in potency with increase dose. Keywords: Phytochemical Screening, GCMS Studies, Anti-Oxidant, Gnetum africanum

scholarly journals Ascorbic Acid and Polyphenols Mediated Green Synthesis of Silver Nanoparticles from Tagetes erecta L. Aqueous Leaf Extract and Studied Their Antioxidant Properties

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Pankaj Kumar Tyagi ◽  
Shruti Tyagi ◽  
Deepak Gola ◽  
Arvind Arya ◽  
Seyed Abdulmajid Ayatollahi ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Free Radical ◽  
Leaf Extract ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Tagetes Erecta ◽  
Aqueous Leaf Extract ◽  
Tagetes Erecta L ◽  
Phenolic And Flavonoid

Silver nanoparticle synthesis of the leaf extract Tagetes erecta L. enriched with ascorbic acid and polyphenols has been investigated. The color of the golden yellow extract has changed to pinkish-brown due to the reduction of Ag+ to the colloidal solution of AgNPs and a sharp absorption peak at 420 nm under the UV-Vis spectrophotometer. In addition, the Fourier Transfer Infrared Spectroscopy (FTIR) estimation was completed in order to recognize and identify the biomolecules present in the extract acting as a reducing and capping agent for the AgNPs. The X-ray diffraction (XRD) peaks at (111), (201), (220), and (311) confirm the presence of monoclinic crystals in the solution. The morphology and size of the particles were provided by transmission electron microscopy (TEM) images of AgNPs. At a scale of 100 nm, synthesized AgNPs were predominantly spherical with a size range of 7-35 nm. In comparison to 7.39 mg/100 g in AgNPs, aqueous leaf extract was 55.14 mg/100 g higher in ascorbic acid. The phenolic and flavonoid content of extract was 52.54 ± 2.15  mg (GAE/100 g) and 15.43 ± 0.34  mg (QE/mL), and the colloidal AgNP solution was 21.45 ± 1.15  mg (GAE/100 g) and 8.05 ± 2.42  mg (QE/mL), respectively. Phenolic and flavonoid contents play a major role as a reducing agent and reduce the precursor AgNO3 into AgNPs. The DPPH scavenging assay also assessed the antioxidant properties of extract and its derived AgNPs. As compared antioxidant value to aqueous leaf extract (mg/mL), higher percentage inhibition (PI) was found in AgNPs and free-radical scavenging activity of extract and AgNPs were directly linked to their concentrations. Results of this research have discovered a higher potential for free-radical scavenging AgNPs and will help to develop new and more potent antioxidants for the treatment of different diseases caused by oxidative stress; the higher antioxidant properties bearing AgNPs might be used.

Cytoprotective and antiadhesive effects of aqueous leaf extract from Orthosiphon aristatus against uropathogenic E. coli

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381 ◽  
Author(s):  
S Sarshar ◽  
MR Asadi Karam ◽  
M Habibi ◽  
S Bouzari ◽  
X Qin ◽  
...  
Keyword(s):  
Leaf Extract ◽  
E Coli ◽  
Aqueous Leaf Extract

Insecticidal Activities of the Leaf Extract of the Invasive Alien Plant, Chromolaena odorata (L.) (Asteraceae) Against Macrotermes species (Termites)

2019 ◽  
Vol 35 (1) ◽  
pp. 145-153
Author(s):  
O. Uyi, ◽  
I.G. Amolo ◽  
A.D. Adetimehin
Keyword(s):  
Leaf Extract ◽  
Insect Pests ◽  
Chromolaena Odorata ◽  
Leaf Extracts ◽  
Alien Plant ◽  
Biological Efficacy ◽  
Invasive Alien Plant ◽  
Impregnation Technique ◽  
Aqueous Leaf Extract ◽  
Worker Caste

Several studies have demonstrated the biological efficacy of leaf, stem and root powders or extracts of Chromolaena odorata (L.) King and Robinson against insect pests but those that are focused on the biological efficacy of aqueous leaf extracts against Macrotermes species are scanty. Current management of termites with synthetic insecticides is being discouraged due to human and environmental hazards. Therefore, the insecticidal effectiveness of aqueous leaf extract C. odorata against Macrotermes species was investigated. Five concentrations (0, 2.5, 5.0, 7.5 and 10.0% (w/v)) of the aqueous extract of C. odorata plant were evaluated for repellency and toxicity on the worker caste of Macrotermes species following standard procedures. The filter paper impregnation technique was used for the bioassay. Percentage repellency was monitored for 30 minutes and mortality recorded at 12, 24 and 36 hours post exposure. The leaf extract of C. odorata significantly repelled 95% of Macrotermes species at the highest concentration of 10% (w/v) after 30 minutes post treatment exposure. Mortality of Macrotermes species was independent of treatment concentration, but dependent on duration of exposure. All treatment concentrations of aqueous leaf extract of C. odorata caused significant mortality against Macrotermes species ranging between 94% and 98% compared to the control; indicating very great potential for adoption and use in the management of Macrotermes species.

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