scholarly journals In-vitro and In-vivo Antioxidant Activity of Ethanol Leaf Extract of Justicia carnea

2020 ◽  
pp. 48-60
Author(s):  
Udedi Stanley Chidi ◽  
Ani Onuabuchi Nnenna ◽  
Asogwa Kingsley Kelechi ◽  
Maduji Fitzcharles Chijindu ◽  
Okafor Clinton Nebolisa
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Superoxide Dismutase ◽  
Leaf Extract ◽  
Dpph Radical ◽  
Β Carotene ◽  
In Vitro Antioxidant Activity

This study investigated the in-vitro antioxidant activity of ethanol leaf extract of Justicia carnea and its effect on antioxidant status of alloxan-induced diabetic albino rats. The in-vitro antioxidant activity was assayed by determining the total phenol, flavonoids, ascorbic acid, β-carotene and lycopene contents and by using 2,2 diphenyl-1-picrylhydrazyl (DPPH) radical, reducing antioxidant power and inhibition of lipid peroxidation antioxidant systems. Oxidative stress was produced in rats by single intraperitoneal injection of 150 mg/kg alloxan and serum concentration of malonaldehyde (MDA), superoxide dismutase (SOD) and catalase (CAT) were determined. Five experimental groups of rats (n=6) were used for the study. Two groups of diabetic rats received oral daily doses of 100 and 200 mg/kg Justicia carnea leaf extract respectively while gilbenclamide (5 mg/ml); a standard diabetic drug was also given to a specific group for 14 days. From the result, the leaf extract contained a higher concentration of flavonoids followed byphenols, ascorbic acid, lycopene and β-carotene. The extract displayed more potent reducing power ability with EC50 of 40 µg/ml compared to BHA (EC50 of 400µg/ml). The percentage DPPH radical scavenging activity of the extract was also higher with EC50 of 200µg/ml and increased with increase in concentration while BHA had EC50of 320µg/ml. The inhibition of lipid peroxidation also increased with increase in concentration with EC50 of 58µg/ml and comparable with BHA (EC50=60µg/ml). The effect of the plant extract on antioxidant enzyme activities was concentration-dependent. Administration of 100mg/kg of the plant extract resulted in a significant decrease (p<0.05) in serum MDA concentration, while 200 mg/kg of the extract caused a significant (p˂0.05) increase in superoxide dismutase (SOD) and catalase activities with a non-significant increase (p>0.05) in the serum level of MDA when compared with the diabetic untreated group. These findings suggest that ethanol leaf extract of Justicia carnea have antioxidant properties and could handle diabetes-induced oxidative stress.

scholarly journals In vitro antioxidant potential study of some synthetic quinoxalines

2012 ◽  
Vol 38 (2) ◽  
pp. 47-50 ◽  
Author(s):  
MM Hossain ◽  
MM Hossain ◽  
MH Muhib ◽  
MR Mia ◽  
S Kumar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Conventional Heating ◽  
Dpph Radical ◽  
Cyclic Ketones ◽  
Scavenging Effect ◽  
Dpph Method ◽  
Quinoxaline Derivatives ◽  
In Vitro Antioxidant Activity

In continuation of our study the in vitro antioxidant activity of some novel quinoxaline derivatives was investigated by 1,1-diphenyl-2-picrylhydrazyl (DPPH) method with respect to ascorbic acid. To determine the antioxidant activity, a number of substituted indoxyls (3A-G), cyclic ketones (2A-G), and quinoxalines (1A-G) were synthesized by both microwave and conventional heating methods. The present findings revealed that some quinoxalines and their precursors (1D, 1F, 1G and 2E) exhibited a marked scavenging effect on DPPH radical. DOI: http://dx.doi.org/10.3329/bmrcb.v38i2.12880 Bangladesh Med Res Counc Bull 2012; 38: 47-50

scholarly journals In vitro antioxidant activity and protective effect of Hertia cheirifolia L. n-butanol extract against liver and heart mitochondrial oxidative stress in rat

2020 ◽  
Vol 7 (1) ◽  
pp. 33-45
Author(s):  
Mouna Menakh ◽  
Djahida Mahdi ◽  
Saber Boutellaa ◽  
Amar Zellagui ◽  
Mesbah Lahouel ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Protective Effect ◽  
Reducing Power ◽  
Mitochondrial Oxidative Stress ◽  
Butanol Extract ◽  
Potential Source ◽  
Β Carotene ◽  
In Vitro Antioxidant Activity

AbstractThe current study investigated the protective effect of Hertia cheirifolia L. n-butanol extract on oxidative stress in vitro by measuring lipid peroxidation (MDA) level and superoxide anion (O2•-) production in liver and heart mitochondria of rat. In addition, the antioxidant potential of H. cheirifolia n-butanol extract was evaluated by using five methods: ABTS•+, O2•-, Bleaching of β-carotene in linoleic acid, CUPRAC and Ferric reducing power. The results indicated that n-butanol extract contained large amounts of total phenolics (203.52±1.81 mg GAE/g) and flavonoids (104.86±0.57 mg QE/g), and had an interesting antioxidant activity and protective effect on mitochondrial oxidative stress. Therefore, H. cheirifolia n-butanol extract may serve as potential source of natural antioxidant for pharmaceutical applications.

scholarly journals Phytochemical evaluation, HPTLC analysis and in-vitro antioxidant activity of hydroalcoholic leaf extract of Grewia hirsuta collected from Western Ghats forest

2020 ◽  
Vol 11 (3) ◽  
pp. 4653-4659
Author(s):  
Dattatraya Kature ◽  
Gaurav Gupta ◽  
Ritu Gilotra
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Western Ghats ◽  
High Performance ◽  
Leaf Extract ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Phytochemical Analysis ◽  
In Vitro Antioxidant Activity

In-vitro antioxidant action of hydroalcoholic leaf extract of Grewia hirsuta (HAEGH) has been examined using one, “1-diphenyl-2-picryl-hydrazil (DPPH) free from radical scavenging” actions. The plant collected from the forest of the Western Ghats region of Karnataka province. The motive for plant collection from a specific location is the plant of forests exhibits the variation in growth, quantity, and quality of their active ingredients and secondary metabolites due to influence ecological factors like effect changes in location, soil, climate, etc. The work corresponds to preliminary phytochemical investigation for diverse phytoconstituents and quantitative phytochemical analysis of total phenolic, flavonoids &amp; alkaloids content (TPC, TFC &amp; TAC respectively) was evaluated with advanced methods. “HPTLC (High performance thin-layer” chromatography) fingerprint investigation was achieved for qualitative determination of the likely number of elements present in the hydroalcoholic extract. In-vitro antioxidant activity of HAEGH has been determined through hydroxyl radical scavenging assay that exhibited strong dose-dependent antioxidant activity as compared with standards compound, ascorbic acid. The IC50 value of HAEGH found, 25.90 % inhibition and for ascorbic acid, it was 17.68%. The Preliminary phytochemical estimation found presence of flavonoids, alkaloids, glycosides, phenol, proteins, diterpins and quantitative phytochemical analysis estimation of TPC, TFC &amp; TAC found to be 3.627%, 4.059% &amp; 5.671% respectively. HPTLC analysis of HAEGH at 354nm reveals the presence of a compound with Rf value 0.44 compare with Rf value 0.46 of quercetin. These outcomes indicated that the hydroalcoholic leaf extract of Grewia hirsuta plant contains phytoconstituents that exhibit antioxidant activity possible because of the existence of bioactive compounds.

scholarly journals Assessment of in vitro Antioxidant and Antidiabetic Capacities of Medlar (Mespilus germanica)

2018 ◽  
Vol 47 (2) ◽  
pp. 384-389
Author(s):  
Sebnem Selen ISBILIR ◽  
Sevilay Inal KABALA ◽  
Hulya YAGAR
Keyword(s):  
Antioxidant Activity ◽  
Leaf Extract ◽  
Antioxidant Activities ◽  
Inhibitory Effect ◽  
Total Phenolic ◽  
Flower Bud ◽  
Ethanol Extracts ◽  
Dpph Scavenging ◽  
Β Carotene

The objective of the current study was to evaluate the antioxidant activity and enzyme inhibitory effect of different parts of medlar including fruit, leaf and flower bud by using various in vitro methods, and also determination of total phenolic and flavonoid content in the samples. Ethanol extracts of medlar parts were prepared and their antioxidant activities were determined using 1,1-diphenyl-2-picryl-hydrazil (DPPH•) scavenging and β-carotene bleaching methods. The leaf extract showed the strongest antioxidant activity. DPPHradical scavenging activity was in the order of BHA > leaf > bud > fruit. This ordering was the same for β-carotene bleaching activity, tocopherol > leaf > bud > fruit. The highest total phenolic (60.3 ± 1.69 mg GAE g-1 extract) and flavonoid (14.77 ± 1.15 mg QE g-1 extract) content were determined in leaf extract. For possible antidiabetic effects of extracts, α-amylase and α-glucosidase inhibitory activities were investigated, the bud extract showed the highest inhibition activities among the all extracts.

scholarly journals Antioxidant Effect of the Castanea sativa Mill. Leaf Extract on Oxidative Stress Induced upon Human Spermatozoa

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Marco Biagi ◽  
Daria Noto ◽  
Maddalena Corsini ◽  
Giulia Baini ◽  
Daniela Cerretani ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Sperm Motility ◽  
Leaf Extract ◽  
Colorimetric Assay ◽  
Castanea Sativa ◽  
High Concentration ◽  
Tem Analysis ◽  
Dpph Test

This study was aimed at evaluating in vitro the effects of a 75% v/v ethanolic extract of leaves of Castanea sativa Mill. (var. Bastarda Rossa, Mount Amiata, Tuscany, Italy) on ejaculated human sperm. Total polyphenols and total flavonoids contained in the extract were determined by a colorimetric assay and HPLC-DAD. The DPPH test and electrochemistry were utilized to study the antioxidant activity of the extract. Swim-up-selected sperm from 8 healthy men were treated with the C. sativa leaf extract at different dilutions (1 : 100, 1 : 200, and 1 : 500), and sperm motility was assessed following the WHO guidelines. Swim-up-selected spermatozoa were incubated with 100 μM H2O2 to induce lipid peroxidation (LPO) and with H2O2 and the leaf extract (1 : 100, 1 : 200, and 1 : 500) to test the antioxidant activity of the extract. The levels of LPO were determined by measuring malondialdehyde (MDA) concentrations. The treated samples were also analyzed by transmission electron microscopy (TEM) for ultrastructural evaluation. The chemical analysis showed that one-third ca. of the polyphenols in the C. sativa extract were made up of flavonoids, with hyperoside present in high concentration. A good antioxidant activity was demonstrated by both the DPPH test and electrochemical analysis. The C. sativa leaf extract did not decrease sperm motility at all tested dilutions. Treatment with H2O2 alone caused a significant increment in MDA levels (P=0.006993), while the treatment with H2O2 plus C. sativa extract diluted to 1 : 100 and 1 : 200 significantly reduced MDA levels (P=0.01476 and P=0.01571, respectively), with respect to H2O2 alone. TEM analysis confirmed the protective effect of the extract on damage induced by LPO, in particular that occurring at the plasma membrane level. The C. sativa leaf extract could be used in human and farm animal protocols for gamete handling, such as techniques of assisted reproduction and cryopreservation of semen, all conditions in which oxidative stress is exacerbated.

scholarly journals Aqueous Extracts of Teucrium polium Possess Remarkable Antioxidant Activity In Vitro

2006 ◽  
Vol 3 (3) ◽  
pp. 329-338 ◽  
Author(s):  
Predrag Ljubuncic ◽  
Suha Dakwar ◽  
Irina Portnaya ◽  
Uri Cogan ◽  
Hassan Azaizeh ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Rat Liver ◽  
Antioxidant Properties ◽  
Liver Homogenate ◽  
Plasma Oxidation ◽  
Teucrium Polium ◽  
Liver Homogenates ◽  
Β Carotene

Teucrium poliumL. (Lamiaceae) (RDC 1117) is a medicinal plant whose species have been used for over 2000 years in traditional medicine due to its diuretic, diaphoretic, tonic, antipyretic, antispasmodic and cholagogic properties. The therapeutic benefit of medicinal plants is often attributed to their antioxidant properties. We previously reported that an aqueous extract of the leaves and stems of this plant could inhibit iron-induced lipid peroxidation in rat liver homogenate at concentrations that were not toxic to cultured hepatic cells. Others have reported that organic extracts of the aerial components of this plant could inhibit oxidative processes. Against this background, we felt further investigation on the antioxidant action of the extract ofT. poliumprepared according to traditional Arab medicine was warranted. Accordingly, we assessed (i) its ability to inhibit (a) oxidation of β-carotene, (b) 2,2′-azobis(2-amidinopropan) dihydrochloride (AAPH)-induced plasma oxidation and (c) iron-induced lipid peroxidation in rat liver homogenates; (ii) to scavenge the superoxide ($${\hbox{ O }}_{2}^{\bullet -}$$) radical and the hydroxyl radical (OH•); (iii) its effects on the enzyme xanthine oxidase activity; (iv) its capacity to bind iron; and (v) its effect on cell glutathione (GSH) homeostasis in cultured Hep G2 cells. We found that the extract (i) inhibited (a) oxidation of β-carotene, (b) AAPH-induced plasma oxidation (c) Fe2+-induced lipid peroxidation in rat liver homogenates (IC50 = 7 ± 2 μg ml−1); (ii) scavenged $${\hbox{ O }}_{2}^{\bullet -}$$(IC50 = 12 ± 3 μg ml−1) and OH• (IC50 = 66 ± 20 μg ml−1); (iii) binds iron (IC50 = 79 ± 17 μg ml−1); and (iv) tended to increase intracellular GSH levels resulting in a decrease in the GSSG/GSH ratio. These results demonstrate that the extract prepared from theT. poliumpossesses antioxidant activityin vitro. Further investigations are needed to verify whether this antioxidant effect occursin vivo.

scholarly journals EVALUATION OF INVITRO ANTI-OXIDANT ACTIVITY OF MAGNOLIA CHAMPACA

2021 ◽  
Vol 6 (8) ◽  
pp. 73-77
Author(s):  
G.SAI SRUTHI ◽  
K. SPANDANA ◽  
RAMANJANEYULU K ◽  
HIMABINDHU J
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Leaf Extract ◽  
Ethanol Extract ◽  
In Vitro Assay ◽  
Vitro Assay ◽  
Soxhlet Apparatus ◽  
Dpph Method ◽  
Anti Oxidant

The aim of this article is to evaluate antioxidant activity of leaf extract of Magnolia champaca by using in vitro assay. Extraction was carried out with ethanol by using Soxhlet apparatus. The invitro antioxidant activity of ethanol extract has been investigated by 1, 1-diphenyl, 2-picryl–hydrazyl free radical (DPPH) method. The ethanol extract exhibited maximum antioxidant activity. The results have been compared with the standard ascorbic acid.

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