scholarly journals Antioxidant and Hypoglycemic Properties of Seeds of Cucurbitaceae Family from Western Nepal

2019 ◽  
Vol 9 (2) ◽  
pp. 1-5
Author(s):  
Atisammodavardhana Kaundinnyayana ◽  
Anita G.C ◽  
Asmita Banstola ◽  
Kishwor Poudel ◽  
Nirmal Acharya ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Positive Control ◽  
Lagenaria Siceraria ◽  
Benincasa Hispida ◽  
Ic50 Values ◽  
In Vitro Antioxidant Activity

Introduction: Diabetes mellitus is an endocrine and metabolic disorder characterized by the defect in insulin secretion or insulin action or both. The association between diabetes mellitus and oxidative stress is well established. Cucurbitaceae is the largest family containing 120 genera mostly grown for its sweet and juicy fruit in warm climates all over the world. In the present work ethanolic extracts of the seeds of Trichosanthes cucumerina Linn (Chichinno), Lagenaria siceraria (Lauka), Cucurbita pepo (Pharsi), Luffa aegiptiaca (Ghiraula), and Benincasa hispida (Kubindo) collected from Western Nepal has been evaluated for their in vitro antioxidant activity and in vivo hypoglycemic effects. Methods: In vitro antioxidant activity was assessed by using DPPH free radical scavenging activities and their IC50 values were calculated. In vivo hypoglycemic effect was examined on normoglycemic rats. The clinical significance of ethanolic extract at the doses of 250 and 500 mg/kg body weight was investigated in 0, 30, 60, 120 and 180 minutes of oral administration. Metformin treated group was used as the positive control. Results: For DPPH radical scavenging action, the IC50 values of Trichosanthes cucumerina, Luffa aegiptiaca, Benincasa  hispida, Cucurbita pepo, Lagenaria siceraria were found to be 60.72, 127.73, 49.63, 98.16 and 52.46 µg/ml respectively which were compared to the IC50 value of ascorbic acid (Positive control) which was found to be 38.11 µg/ml. The extracts of Benincasa hispida, and were having higher antioxidant activity and tested for in vivo hypoglycemic activity.In vivo administration of two doses of ethanolic extract of Lagenaria siceraria reduced the level of blood glucose while the best result was obtained at 250 mg/kg. Conclusions: Present study revealed promising antioxidant and hypoglycemic activity of ethanolic extract of Lagenaria siceraria. The further exploration of Lagenaria siceraria for its effective use in the traditional medicinal system is essential.

scholarly journals IN VITRO ANTIOXIDANT ACTIVITY, IN VIVO ANTIPYRETIC AND ANTI-INFLAMMATORY ACTIVITIES OF PARONYCHIA CAPITATA L.

2017 ◽  
Vol 10 (3) ◽  
pp. 177
Author(s):  
Soumia Bouzidi ◽  
Benkiki Naima ◽  
Allaoua Zina
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Butanol Extract ◽  
Antipyretic Activity ◽  
Male Wistar Rats ◽  
Anti Inflammatory ◽  
In Vitro Antioxidant Activity

ABSTRACTObjective: The aim of this study is to evaluate the in vitro antioxidant activity of Paronychia capitata various extracts, acute toxicity, the in vivoantipyretic and anti-inflammatory activities of the n-butanol extract.Methods: The antioxidant properties were tested using 2,2-diphenyl 1-picrylhydrazyl radical scavenging and β-carotene linoleic acid system, thetotal phenolic and flavonoid contents were determined. Furthermore, anti-inflammatory activity and antipyretic activity of the n-butanol extractwere assessed on male Wistar rats at the dose levels 250, 500 mg/kg body weight, using the egg albumin-induced edema, and brewer’s yeast-inducedpyrexia method, respectively.Results: The n-butanol extract of P. capitata had considerably the highest antiradical activity with inhibitory concentration 50 value of 8.667 μg/ml.Conclusion: The experimental data demonstrated that n-butanol extract of P. capitata possess significantly remarkable anti-inflammatory andantipyretic activities compared to the standard drugs.Keywords: Caryophyllaceae, Flavonoid, Inflammation, Fever, Paronychia capitata.

scholarly journals In vitro antioxidant activity and gastroprotective effect of ethanolic extract from Cucumis melo L. var. inodorus fruit on ethanol-induced gastric ulcer in rats

2020 ◽  
Vol 10 (5-s) ◽  
pp. 302-307
Author(s):  
Amel Bouaziz ◽  
Assia Bentahar ◽  
Saliha Djidel ◽  
Saliha Dahamna ◽  
Seddik Khennouf
Keyword(s):  
Antioxidant Activity ◽  
Gastric Ulcer ◽  
Hydroxyl Radical ◽  
Cucumis Melo ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Dry Extract ◽  
Cucumis Melo L ◽  
In Vitro Antioxidant Activity

The aim of this study was to estimate the content of polyphenols, flavonoids and tannins and to evaluate the antioxidant property and the antiulcer activity of the ethanolic extract of melon (Cucumis melo L. var. inodorus) pulp on ethanol-induced gastric ulcers in rats.  Ferric reducing power and hydroxyl radical scavenging tests were applied to evaluate the in vitro antioxidant activity. The polyphenolic and flavonoids contents of    melon extract were found to be 56.5 ± 2.49 mg GAE/g of dry extract and 0.43 ± 0.09 mg QE/ g of dry extract, respectively. Whereas the tannins content was 48. 30 ±  0. 9 mg ETA/ g of dry extract.  Melon pulp  extract exhibited  a good reducing potential   with  an  EC50 of  4.23 ± 0.08 mg/ml and high hydroxyl radical scavenging activity with IC50 of  1.83± 0.09 mg/ml. Oral administration of the melon pulp extract at doses of  200 and 600 mg/kg to rats  reduced gastric mucosal lesions  dose-dependently  with percentage protection of 56.56 and 93.79% compared to omeprazole (95.92 %) as reference drug. These results showed that the melon pulp extract had a good antioxidant activity and gastroprotective potential suggesting it use as an adjuvant in the treatment of gastric ulcer. Keywords: Cucumis melo var. inodorus, Polyphenols, Flavonoids, Tannins, Ulcer, Rat.

scholarly journals Antioxidant Activity of the Ethanol Extract of Manilkara zapota Leaf

2011 ◽  
Vol 4 (1) ◽  
pp. 193 ◽  
Author(s):  
M. E. Islam ◽  
M. S. Parvin ◽  
M. R. Islam ◽  
M. S. Islam ◽  
S. M. R. Hasan
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Ethanolic Extract ◽  
Serum Marker ◽  
Control Group ◽  
Marker Enzymes ◽  
Manilkara Zapota

The present study evaluated the antioxidant activity of cold ethanolic extract of Manilkara zapota (Sapotaceae) leaves. In vitro antioxidant activity was determined using 1, 1-diphenyl-2-picrylhydrazyl radical, reducing power capacity, total phenol and flavonoid content. The extract demonstrated significant dose dependent antioxidant activity in vitro methods. In DPPH radical scavenging assay IC50 values of Manilkara zapota leaves (MZL) and ascorbic acid (standard) were found to be 68.27 and 16.17 μg/ml, respectively. In vivo, the extract was evaluated by carbon tetrachloride (CCl4) induced liver damage rats in hepatoprotective model. CCl4 produced significant alteration of serum marker enzymes, total bilirubin, total protein and liver weight. Restoration of these values towards normal, which is comparable to control group, indicated hepatoprotective activity, which reflects the antioxidant potential of the extract. Results presented here indicate that MZL possess strong antioxidant activity and they can therefore be used as a good natural source of antioxidant.Keywords: MZL; DPPH; Scavenging activity; Serum marker enzymes.© 2012 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi: http://dx.doi.org/10.3329/jsr.v4i1.7148J. Sci. Res. 4 (1), 193-202 (2012)

scholarly journals In Vitro Antioxidant Activity of Zingiber officinale, Piper retrofractum, and Their Combinations

2011 ◽  
Vol 2 (3) ◽  
pp. 295 ◽  
Author(s):  
Hendri Wasito ◽  
Heny Ekowati ◽  
Fitri Fauziah Hayati
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Zingiber Officinale ◽  
Free Radical Scavenging ◽  
Dpph Method ◽  
Piper Retrofractum ◽  
X 24 ◽  
In Vitro Antioxidant Activity

Many plants are used empirically as antioxidant. Plants that are frequently used in Indonesian communities are Zingiber officinale and Piper retrofractum. The aim of this research was to investigate the in vitro antioxidant activity of single ethanolic extract and the combinations ofZ. officinale and P. retrofratum using free radical scavenging DPPH (1,1-diphenyl-2-picrylhydrazyl) method. Z. officinale and P. retrofratum were extracted by maceration using 95% ethanol for 3 x 24 hours. Antioxidant activity was evaluated using 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. The concentration of the extract (μg/mL) that was required to scavenge 50% of free radicals (IC50)was calculatedusing the percent scavenging activities of six different extract concentrations. The results showed that the single ethanolic extract of Z. Officinalle produced the highest antioxidant activity with IC50of 56 μg/mL, while the antioxidant  activity of the single ethanolic extract of  P. retrofractum produced an IC50 of 3.445 μg/mL. The IC50 of combination of Z. officinale and P. retrofratum ethanolic extracts at concentration ratios of 1: 2, 1 : 1, and 2 : 1 were 148 μg/mL, 85 μg/mL, and 73 μg/mL.Keywords: Zingiber officinale, Piper retrfratum, Antioxidant, DPPH

scholarly journals IN-VITRO ANTIOXIDANT ACTIVITY OF PLANT ELAEOCARPUS TUBERCULATUS ROXB.

2019 ◽  
Vol 8 (3) ◽  
Author(s):  
Vikas R. Mathad ◽  
Jayadevaiah K. V. ◽  
Vinay R. ◽  
Basavaraja H. S. ◽  
Bharathi D. R. ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Free Radical ◽  
Developing World ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Ethanolic Extract ◽  
Stem Bark ◽  
In Vitro Antioxidant Activity

A majority of the population in the developing world is struggling to raise living standards and improve health-care delivery due to increasing poverty and population. According to an estimate, 70-80% of the developing world is dependent on conventional plant-obtained remedies, as pharmaceuticals are high priced, so the present study was aimed at evaluating the crude ethanolic extract of stem bark of plant Elaeocarpus tuberculatus Roxb. belonging to the family Elaeocarpaceae with in- vitro antioxidant activity by following various methods namely total reducing power and free radical scavenging activity was evaluated using 1,1-diphenyl-2-picryl hydrazyl (DPPH) free radical. The crude ethanolic extract possesses significant concentration dependent inhibition of DPPH activity and concentration dependent increase in reducing power property against the standard ascorbic acid. Our findings provide evidence that the crude ethanolic extract of stem bark of Elaeocarpus tuberculatus Roxb. is a potential source of natural antioxidant. Keywords: Elaeocarpus tuberculatus Roxb., 1,1-diphenyl-2-picryl hydrazyl (DPPH), Total reducing power, ascorbic acid.

scholarly journals Antioxidant and genotoxic properties of Maytenus dasyclada: a comparative study in relation to Maytenus reference species

2015 ◽  
Vol 75 (2) ◽  
pp. 471-476 ◽  
Author(s):  
RL. Cansian ◽  
GB. Kubiak ◽  
L. Borsatti ◽  
AA. Mielniczki-Pereira ◽  
SS. Roman ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Content ◽  
Pearson Correlation ◽  
Total Phenolic ◽  
Reference Species ◽  
Carbonyl Content ◽  
Ic50 Values ◽  
In Vitro Antioxidant Activity

In these work the in vitro antioxidant activity and the in vivo genotoxicity of M. dasyclada was compared to the reference species M. aquifolium and M. ilicifolia. M. dasyclada showed in vitro antioxidant activity comparable to M. aquifolium but lower than M. ilicifolia, being that a inverse Pearson correlation between DPPH IC50 values and total phenolic content was detected (–0.932). The carbonyl content of M. dasyclada and M. aquifolium extracts promoted a similar increase in protein oxidation in vivo, while M. ilicifolia no altered the carbonyl levels. The comet assay demonstrated that the three analyzed species promoted a low and similar level of genotoxicity; which is compatible with DNA damage induced by other medicinal plants and is partially recovered by a co-treatment with vitamin C. The data showed M. dasyclada as antioxidant activity in vitro, and that its genotoxic and pro-oxidant effects in vivo are comparable to the Maytenus reference species.

scholarly journals Inhibitory Effect of Antidesma bunius Fruit Extract on Carbohydrate Digestive Enzymes Activity and Protein Glycation In Vitro

Antioxidants ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 32
Author(s):  
Pattamaporn Aksornchu ◽  
Netima Chamnansilpa ◽  
Sirichai Adisakwattana ◽  
Thavaree Thilavech ◽  
Charoonsri Choosak ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Digestive Enzyme ◽  
Radical Scavenging ◽  
Protein Glycation ◽  
Trolox Equivalent Antioxidant Capacity ◽  
Fruit Extract ◽  
Antioxidant Power ◽  
Ic50 Values

Antidesma bunius (L.) spreng (Mamao) is widely distributed in Northeastern Thailand. Antidesma bunius has been reported to contain anthocyanins, which possess antioxidant and antihypertensive actions. However, the antidiabetic and antiglycation activity of Antidesma bunius fruit extract has not yet been reported. In this study, we investigated the inhibitory activity of anthocyanin-enriched fraction of Antidesma bunius fruit extract (ABE) against pancreatic α-amylase, intestinal α-glucosidase (maltase and sucrase), protein glycation, as well as antioxidant activity. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) chromatogram revealed that ABE contained phytochemical compounds such as cyanidin-3-glucoside, delphinidin-3-glucoside, ellagic acid, and myricetin-3-galactoside. ABE inhibited intestinal maltase and sucrase activity with the IC50 values of 0.76 ± 0.02 mg/mL and 1.33 ± 0.03 mg/mL, respectively. Furthermore, ABE (0.25 mg/mL) reduced the formation of fluorescent AGEs and the level of Nε-carboxymethyllysine (Nε-CML) in fructose and glucose-induced protein glycation during four weeks of incubation. During the glycation process, the protein carbonyl and β-amyloid cross structure were decreased by ABE (0.25 mg/mL). In addition, ABE exhibited antioxidant activity through DPPH radical scavenging activity and Trolox equivalent antioxidant capacity (TEAC) with the IC50 values 15.84 ± 0.06 µg/mL and 166.1 ± 2.40 µg/mL, respectively. Meanwhile, ferric reducing antioxidant power (FRAP) showed an EC50 value of 182.22 ± 0.64 µg/mL. The findings suggest that ABE may be a promising agent for inhibiting carbohydrate digestive enzyme activity, reducing monosaccharide-induced protein glycation, and antioxidant activity.

scholarly journals Evaluation antioxidant activity and corrosion inhibition of C38 in Hydrochloric acid medium by dried lemon peels of Kenitra Marrakech cities in Morocco and Taiz town in Yemen: A Comparative study

2021 ◽  
Vol 119 ◽  
pp. 04001
Author(s):  
Khaled Abdu ◽  
Rahma Erahioui ◽  
Khadija Khedid ◽  
Hefdhal deen ◽  
Maha Elhawary ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Comparative Study ◽  
Corrosion Inhibition ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Fatty Tissue ◽  
Scavenging Activity ◽  
Ic50 Values

This paper presents a comparative study about the evaluation of antioxidant activity and corrosion inhibition in Kenitra, Marrakesh and Taiz. An interesting topic, indeed polyphenols can improve or help to reduce oxidative stress in the treatment of digestive problems, weight management difficulties, diabetes, hypertension, arteriosclerosis and damage fatty tissue. Therefore, the authors deal with the measurement of polyphenol content and evaluation of the antioxidant activity of lemon peels in Kenitra , Marrakesh and Taiz.The authors performs empirical analyzes on lemon peels. The total polyphenol contents of the ethanolic extract of lemon peels were measured. It was to be 30. 23, 26. 346 and 20.961 mg/CE/g in Kenitra, Marrakech, and Taiz, respectively. Moreover, the DPPH radical scavenging activity of ethanolic extract of dried lemon peels was higher than 200μg/ml concentration. They were 73.47%, 47.36%, and 32.09in Kenitra, Marrakech, and Taiz, respectively. Also, the IC50 values of ethanolic extracts calculated from the percentage inhibitions at the same concentration. Inhibition (IC50) which obtained in Kenitra was 123.089 μg/ml. It was lower compared to the ethanol extract of Marrakech and Taiz that were 197.418, 276.750μg/mL, respectively. Therefore, the extract which is containing a high amount of phenolic is showed high radical scavenging activity. In addition, the maximum inhibition efficiencies for 2 mL L-1 of the inhibitor at 298 k were 98, 12% and 84, 85 % in Kenitra and Taiz, respectively. These values obtained through polarization curve measurements.

scholarly journals In Vitro and In Vivo Antioxidant Activity of the New Magnetic-Cerium Oxide Nanoconjugates

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1565 ◽  
Author(s):  
Turin-Moleavin ◽  
Fifere ◽  
Lungoci ◽  
Rosca ◽  
Coroaba ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Iron Oxide ◽  
Cerium Oxide ◽  
Chemical Activation ◽  
Radical Scavenging ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles

Background. Cerium oxide nanoparticles present the mimetic activity of superoxide dismutase, being able to inactivate the excess of reactive oxygen species (ROS) correlated with a large number of pathologies, such as stents restenosis and the occurrence of genetic mutations that can cause cancer. This study presents the synthesis and biological characterisation of nanoconjugates based on nanoparticles of iron oxide interconnected with cerium oxide conjugates. Methods. The synthesis of magnetite-nanoceria nanoconjugates has been done in several stages, where the key to the process is the coating of nanoparticles with polyethyleneimine and its chemical activation-reticulation with glutaraldehyde. The nanoconjugates are characterised by several techniques, and the antioxidant activity was evaluated in vitro and in vivo. Results. Iron oxide nanoparticles interconnected with cerium oxide nanoparticles were obtained, having an average diameter of 8 nm. Nanoconjugates prove to possess superparamagnetic properties and the saturation magnetisation varies with the addition of diamagnetic components in the system, remaining within the limits of biomedical applications. In vitro free-radical scavenging properties of nanoceria are improved after the coating of nanoparticles with polyethylenimine and conjugation with magnetite nanoparticles. In vivo studies reveal increased antioxidant activity in all organs and fluids collected from mice, which demonstrates the ability of the nanoconjugates to reduce oxidative stress. Conclusion. Nanoconjugates possess magnetic properties, being able to scavenge free radicals, reducing the oxidative stress. The combination of the two properties mentioned above makes them excellent candidates for theranostic applications.

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