scholarly journals Antioxidant Activity of Mytilus galloprovincialis and Ruditapes philippinarum

2019 ◽  
Vol 7 (sp1) ◽  
pp. 150
Author(s):  
Sehat Çolakoğlu ◽  
Gülen Türker ◽  
İlknur Ak ◽  
Fatma Çolakoğlu
Keyword(s):  
Antioxidant Activity ◽  
Mytilus Galloprovincialis ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ruditapes Philippinarum ◽  
Butylated Hydroxytoluene ◽  
Carotenoid Content ◽  
Marmara Sea ◽  
Scavenging Activity ◽  
Total Carotenoid

This study reports on the evaluation of the antioxidant of ethanolic extracts of Mytilus galloprovincialis and Ruditapes philippinarum collected from the Marmara Sea. The antioxidant activity of the two bivalve species was evaluated using the 2,2-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging method. The total carotenoid contents were also determined. In the DPPH method, all extracts exhibited low radical scavenging activity when compared to the standards used, i.e. -tocopherol and butylated hydroxytoluene (BHT) with the inhibition percentage in the range of 35.87±0.05 – 36.27±0.02%. In particular, M. galloprovincialis exhibited the highest radical scavenging activity with an IC50 value of 29.55±0.02 mg/g Ext. However, there are no statistically significant differences in the IC50 values of two species. The highest total carotenoid content was found in M. galloprovincialis as 1.13±0.02 µg/g sample. The statistically significant differences were found in total carotenoid contents of two bivalves. In this study in M. galloprovincialis was also found to be high in carotenoid content, while R. philippinarum was found to be almost nonexistent. More detailed studies are needed to determine relationship between the bioactive compounds of crustaceans and their antioxidant activities, distributed in our country.

scholarly journals In vitro assessment of the protection from oxidative stress by various fractions of Artemisia incisa Pamp.

2011 ◽  
Vol 76 (10) ◽  
pp. 1379-1386
Author(s):  
A Aziz-Ur-Rehman ◽  
Sehrish Gulzar ◽  
Muhammad Abbasi ◽  
Tayyaba Shahzadi ◽  
Tauheeda Riaz ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Butylated Hydroxytoluene ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Aqueous Fraction ◽  
Antioxidant Power ◽  
Ic50 Value

The methanolic extract of Artemisia incisa Pamp. was dissolved in distilled water and successively partitioned with n-hexane, chloroform, ethyl acetate and n-butanol. The antioxidant potential of all these fractions and remaining aqueous fraction was evaluated by four methods, i.e., the scavenging activity of the 1,1-diphenyl-2-picrylhydrazyl radical (DPPH), the total antioxidant activity, the ferric reducing antioxidant power (FRAP) assay and the ferric thiocyanate assay. In addition, the total phenolics was determined. The obtained results revealed that among the studied fractions the ethyl acetate soluble fraction showed the most potent DPPH-radical scavenging activity with an IC50 value of 5.3 ? 0.71 ?g mL-1, which is even more effective than the standard antioxidant butylated hydroxytoluene (BHT) (IC50 value 0f 12.1? 0.92 ?g mL-1). The ethyl acetate fraction also showed the highest FRAP value (3677.13 ? 27.1 ?g TE mL-1), inhibition of lipid peroxidation (60.93 ? 0.84 % at 500 ?g mL-1) and total phenolic content (95.5 ? 0.05 ?g GAE g-1) as compared to other fractions. However, the remaining aqueous fraction was found to posses the highest antioxidant activity of all the fractions.

scholarly journals Composition and Antioxidant Activity of Essential Oils of Lippia Origanoides H.B.K. grown in Colombia

2008 ◽  
Vol 3 (4) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Elena Stashenko ◽  
Carlos Ruiz ◽  
Amner Muñoz ◽  
Martha Castañeda ◽  
Jairo Martínez
Keyword(s):  
Antioxidant Activity ◽  
Essential Oil ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
The Other ◽  
Butylated Hydroxytoluene ◽  
Scavenging Activity ◽  
Compound Identification ◽  
Microwave Assisted ◽  
Main Components

Microwave-assisted hydrodistillation, simultaneous distillation-solvent extraction, and supercritical fluid extraction, were used to isolate secondary metabolites from two Lippia origanoides chemotypes growing wild in Colombia. Compound identification was based on chromatographic and spectroscopic criteria. The main components identified in the essential oil of one chemotype were carvacrol (44.4 – 51.8%) and p-cymene (8.8 – 10.1%). Those of the other chemotype were p-cymene (11.3 – 15.7%) and 1,8-cineole (6.8 – 10.9%). The last one constitutes a new chemotype, characterized by its low thymol and carvacrol contents and very low antioxidant activity. The radical scavenging activity of the essential oil of the first chemotype was higher than that of butylated hydroxytoluene (BHT) and similar to that of α-tocopherol.

In vitro antioxidant and preliminary phytochemical screening of methanolic extract of Macaranga denticulata (Blume) Müll.Arg.

2018 ◽  
Vol 18 (3) ◽  
pp. 92-97
Author(s):  
R. Lalmuanawmi ◽  
Zothanpuia
Keyword(s):  
Antioxidant Activity ◽  
Methanolic Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reference Standards ◽  
Butylated Hydroxytoluene ◽  
Scavenging Activity ◽  
Phytochemical Screening ◽  
In Vitro Antioxidant Activity

Macaranga denticulata (Blume) Müll.Arg. (family Euphorbiaceae) is an evergreen tree and a common pioneer species in moist open and secondary forest. It is commonly known as Kharpa in Mizoram. Traditionally, the species of Macaranga are used in the treatment of swelling, cuts, sores, boils and bruises. Preliminary phytochemical screening and evaluation of in vitro antioxidant activity were carried out on the methanolic extract obtained from the bark of M. denticulata. The presence of alkaloids, tannins, flavonoids, saponins, steroids and triterpenoids was indicated by the tests conducted. The in vitro antioxidant activity was evaluated using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, reducing power and hydrogen peroxide radical scavenging activity. Ascorbic acid and butylated hydroxytoluene (BHT) were used as reference standards. The methanolic extract of the plant shows a strong antioxidant activity comparable to that of the reference standards.

scholarly journals Antioxidant Activity in Rheum emodi Wall (Himalayan Rhubarb)

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2555
Author(s):  
Sang Koo Park ◽  
Yoon Kyung Lee
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ethyl Acetate Fraction ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Polyphenol Content ◽  
Abts Assay ◽  
Ic50 Values

Using natural products as antioxidant agents has been beneficial to replace synthetic products. Efforts have been made to profile the antioxidant capacities of natural resources, such as medicinal plants. The polyphenol content of Himalayan rhubarb, Rheum emodi wall, was measured and the antioxidant activity was determined using DPPH and ABTS+ assay, and the oxidative stress was assessed using SOD enzymatic assay. Five different solvent fractions, n-hexane, n-butanol, ethyl acetate, dichloromethane, and water, were used for screening the antioxidant capacity in effort to determine the optimum extraction solvent. The total phenolic contents for R. emodi fractions ranged from 27.76 to 209.21 mg of gallic acid equivalents (GAE)/g of dry weight. DPPH and ABTS+ assay results are presented into IC50 values, ranged from 21.52 to 2448.79 μg/mL and 90.25 to 1718.05 μg/mL, respectively. The ethyl acetate fraction had the highest antioxidant activity among other fractions. Also, n-butanol and water fractions showed significantly lower IC50 values than the positive control in DPPH radical scavenging activity. The IC50 values of SOD assay of fractions ranged from 2.31 to 64.78 μg/mL. A similar result was observed with ethyl acetate fraction showing the highest SOD radical scavenging activity. The study suggests that the ethyl acetate fraction of R. emodi possess the strongest antioxidant activity, thus the most efficient in extracting antioxidant contents. Moreover, a highly significant correlation was shown between total polyphenol content and antioxidant activity screening assays. The compounds related to the antioxidant activity of R. emodi were identified to myricitrin, myricetin 3-galloyl rhamnoside, and myricetin, which have not been reported in studies about R. emodi before.

scholarly journals Antiglycation and Antioxidant Properties of Ficus deltoidea Varieties

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Nur Sumirah Mohd Dom ◽  
Nurshieren Yahaya ◽  
Zainah Adam ◽  
Nik Mohd Afizan Nik Abd. Rahman ◽  
Muhajir Hamid
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Protein Carbonyl ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Ficus Deltoidea ◽  
Dpph Radical Scavenging

The present study aimed to evaluate the potential of standardized methanolic extracts from seven Ficus deltoidea varieties in inhibiting the formation of AGEs, protein oxidation, and their antioxidant effects. The antiglycation activity was analyzed based on the inhibition of AGEs, fructosamine, and thiol groups level followed by the inhibition of protein carbonyl formation. The antioxidant activity (DPPH radical scavenging activity and reducing power assay) and total phenolic contents were evaluated. After 28 days of induction, all varieties of Ficus deltoidea extracts significantly restrained the formation of fluorescence AGEs by 4.55–5.14 fold. The extracts also reduced the fructosamine levels by 47.0–86.5%, increased the thiol group levels by 64.3–83.7%, and inhibited the formation of protein carbonyl by 1.36–1.76 fold. DPPH radical scavenging activity showed an IC50 value of 66.81–288.04 μg/ml and reducing power activity depicted at 0.02–0.24 μg/ml. The extent of phenolic compounds present in the extracts ranged from 70.90 to 299.78 mg·GAE/g. Apart from that, correlation studies between the activities were observed. This study revealed that seven varieties of Ficus deltoidea have the potential to inhibit AGEs formation and possess antioxidant activity that might be attributed to the presence of phenolic compounds.

scholarly journals Composition, antimicrobial and antioxidant activity of the extracts of Eryngium palmatum Pančić and Vis. (Apiaceae)

2014 ◽  
Vol 9 (2) ◽  
pp. 149-155 ◽  
Author(s):  
Mirjana Marčetić ◽  
Silvana Petrović ◽  
Marina Milenković ◽  
Marjan Niketić
Keyword(s):  
Antioxidant Activity ◽  
Methanol Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Chloroform Extract ◽  
Volatile Fraction ◽  
Scavenging Activity ◽  
Antioxidant Power ◽  
Aerial Parts ◽  
Antimicrobial And Antioxidant Activity

AbstractThe chemical composition, antimicrobial and antioxidant activity of Eryngium palmatum, an endemic plant species from the Balkan Peninsula, were investigated. The flavonoids apigenin (9.5±0.3 mg g−1) and apigenin 7-O-glucoside (2.4±0.1 mg g−1) were determined in a methanol extract of aerial parts using HPLC analysis. The methanol extract of roots contained catechin (5.0±0.1 mg g−1), epicatechin (2.9±0.1 mg g−1), chlorogenic acid (1.6±0.0 mg g−1), gallic acid (0.9±0.0 mg g−1) and rosmarinic acid (0.9±0.2 mg g−1). GC-FID and GCMS analysis of a chloroform extract of aerial parts showed that the main volatile constituents were falcarinol, linoleic acid, hexadecanoic acid and methyl linoleate (comprising 32.6%; 24.4%; 19.9; 13.2% of the volatile fraction, respectively), while octanoic acid, tetradecanol and dodecanol dominated in the chloroform extract of the roots (34.9%; 25.8%; 22.2% of the volatile fraction, respectively). Investigation of antimicrobial activity by broth microdilution showed that the methanol and chloroform extracts of aerial parts and roots exerted a significant effect (MIC 3.5–15.6 μg mL−1) against tested Gram-positive and Gram-negative bacteria. The methanol extracts of aerial parts or roots exerted moderate ferric reducing antioxidant power, DPPH radical scavenging activity and hydroxyl radical scavenging activity.

scholarly journals Antioxidant and Anticancer Activities of Wampee (Clausena lansium(Lour.) Skeels) Peel

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
K. Nagendra Prasad ◽  
Jing Hao ◽  
Chun Yi ◽  
Dandan Zhang ◽  
Shengxiang Qiu ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Total Phenolic ◽  
Liver Carcinoma ◽  
Scavenging Activity ◽  
Anticancer Activities

Antioxidant activities of wampee peel extracts using five different solvents (ethanol, hexane, ethyl acetate, butanol and water) were determined by using in-vitro antioxidant models including total antioxidant capability, 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging activity, reducing power, and superoxide scavenging activity. Ethyl acetate fraction (EAF) exhibited the highest antioxidant activity compared to other fractions, even higher than synthetic antioxidant butylated hydroxyl toluene (BHT). In addition, the EAF exhibited strong anticancer activities against human gastric carcinoma (SGC-7901), human hepatocellular liver carcinoma (HepG-2) and human lung adenocarcinoma (A-549) cancer cell lines, higher than cisplatin, a conventional anticancer drug. The total phenolic content of wampee fraction was positively correlated with the antioxidant activity. This is the first report on the antioxidant and anticancer activities of the wampee peel extract. Thus, wampee peel can be used potentially as a readily accessible source of natural antioxidants and a possible pharmaceutical supplement.

scholarly journals EFFECT OF DIFFERENT SOLVENTS ON ANTIOXIDANT ACTIVITY OF LEAF EXTRACTS OF CALOTROPIS PROCERA AND AZADIRACHTA INDICA

2016 ◽  
Vol 10 (1) ◽  
pp. 268
Author(s):  
Sharmistha Banerjee ◽  
Shuchi Kaushik ◽  
Rajesh Singh Tomar
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolics ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Calotropis Procera ◽  
Peroxide Radical ◽  
Scavenging Activity ◽  
Leaf Extracts ◽  
Dry Extract ◽  
Leaf Powder

ABSTRACTObjective: This study was performed to identify the phytochemicals and comparatively evaluate the antioxidant activity of Calotropis procera andAzadirachta indica by detection of total phenolics, hydrogen peroxide radical scavenging activity, and estimation of condensed tannins in differentsolvent systems and at different temperatures.Methods: Leaves of C. procera and A. indica were extracted in water, methanol by soaking dried leaf powder at room temperature and also by boilingthe leaf powder in water for 30 minutes. Phytochemical tests were performed in all of the extracts. The antioxidant activity was determined byhydrogen peroxide radical scavenging activity. Quantitative estimation of total phenolics and hydrolysable tannins was also performed.Results: The total phenolics in both leaf extracts was obtained maximum in boiled extract (40.7±1.20 mg gallic acid equivalent [GAE]/g dry extractin C. procera and 33.66±1.45 mg GAE/g dry extract in A. indica). The amount of hydrolysable tannins in both leaf extracts was found to be highest inmethanol (150±1.88 mg catechin equivalent/g dry extract in C. procera and 144.8±2.63 mg catechin equivalent/g dry extract in A. indica).Conclusion: The study showed promising results indicating that these plants are a good source of antioxidants. The majority of phytochemicals wereextracted in distilled water and methanol acts as a good solvent for extraction of tannins, whereas an increase in temperature leads to poor extractionof tannins.Keywords: Antioxidant, Phytochemicals, Phenolics, Radical, Tannins.© 2017 The Authors. Published by Innovare Academic Sciences Pvt Ltd. This is an open access article under the CC BY license (http://creativecommons.

DPPH Radical Scavenging Activity of Kaempferol

2013 ◽  
Vol 781-784 ◽  
pp. 1294-1297 ◽  
Author(s):  
Ping Liu ◽  
Yun Tao Gao ◽  
Jiao Jiao Yu ◽  
Jia Wei Cha ◽  
Dong Mei Zhao ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Absorption Spectrum ◽  
Reaction Time ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Dpph Radical Scavenging

The UV-Vis absorption spectrum of kaempferol and DPPH was investigated, the optimum determination wavelength and reaction time for determining the DPPH radical scavenging activity of kaempferol was 517 nm and 30 min, respectively. Kaempferol exhibited strong DPPH radical scavenging activity with a IC50 value of 0.004349 mg·mL-1, which is smaller than that of rutin, indicating that kaempferol has a stronger antioxidant activity than rutin.

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