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Journal articles on the topic 'Ferric reducing antioxidant power (FRAP)'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kuang, Wei, Chen Zhang, Man Rong Huang, and Zhi Wei Liu. "Antioxidant Activities of the 95% Ethanol Extracts of Nine Chinese Herbs Commonly Used in Hakka Area." Advanced Materials Research 396-398 (November 2011): 246–49. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.246.

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Nine Chinese herbs including Artemisiae Argyi, Peristrophe baphica, Paederia scandense, Patrinia villosa, Cassia mimosoides, Gynostemma Pentaphyllum, Rabdosin serra, Mesona chinensis and Houttuynia cordata are commonly used in Hakka area. We investigated the antioxidant activities of 95% ethanol extracts from whole plants of the nine Chinese herbs by two in vitro assays, namely DPPH radical-scavenging activity and ferric reducing/antioxidant power(FRAP) assay. The contents of total flavonoids and total phenols were measured by aluminum chloride and Folin-Ciocalteu colorimetric assays, respecti

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Ugwo, Jeremiah, and Marvellous Kehinde Adealawode. "Determination of Antioxidant activities of locally produce rice in Northern and Western part of Nigeria, using Kebbi rice and Igbemo rice as case study." Catalyx : Journal of Process Chemistry and Technology 1, no. 1 (2024): 33–44. http://dx.doi.org/10.61978/catalyx.v1i1.238.

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This research provides the antioxidant activities of locally produced rice in the Northern and Western regions of Nigeria, with a focus on Kebbi rice and Igbemo rice. The study utilizes the Ferric Reducing Antioxidant Power (FRAP) and 2,2-Diphenyl-1-picrylhydrazyl (DPPH) assays to evaluate the antioxidant capacity of these rice varieties. In which the sample was extracted using solvent extraction method after which the antioxidant (AO) activity of the rice samples as ferric-reducing power, is determined using a modified FRAP (ferric reducing/antioxidant power) assay Sodium phosphate, buffer so

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Amin, Astuti, Nur Khairi, and Wahyu Hendrarti. "Aktivitas Antioksidan Ekstrak Etanol Batang, Daun, dan Akar Kopasanda (Chromolaena odorata L.) dengan Metode FRAP (Ferric Reducing Antioxidant Power)." Jurnal Sains dan Kesehatan 4, no. 5 (2022): 473–80. http://dx.doi.org/10.25026/jsk.v4i5.1271.

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Kopasanda (Chromolaena odorata L.) is a plant that contains flavonoid compounds that can act as antioxidants. This study aims to determine the antioxidant potential of the ethanol extract of the stems, leaves and roots of kopasanda by looking at the IC50 value. The stems, leaves and roots of Kopasanda were extracted by maceration using 70% ethanol as solvent. The results of the antioxidant activity test using the FRAP (Ferric Reducing Antioxidant Power) method showed very strong antioxidant activity with IC50 values ??of leaves 23.4 µg/ml, stems 37.556 g/ml and roots 36.860µg/ml with positive

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Vina Farah Fauziah, Devika Nurhasanah, and Nofran Putra Pratama. "Peredaman Radikal Bebas Ekstrak Etanol Daun Rosella (Hibiscus sabdariffa L) Dengan Metode Frap (Ferric Reducing Antioxidant Power)." JOURNAL OF PHARMACEUTICAL (JOP) 1, no. 1 (2023): 21–29. http://dx.doi.org/10.30989/jop.v1i1.866.

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Background: Antioxidant are chemical compounds that can donate electrons to unpaired free radicals, thereby reducing the effects of free radical oxidation. One of the plants that have antioxidants activity is the rosella plant, for example in the leaves. Rosella leaves contain phytochemical compounds that are useful as antioxidant, namely flavonoids, alkaloids, saponins, tanin.Objective: Determine the antioxidant activity of the ethanol extract of rosella leave (Hibiscus sabdariffa L) by FRAP method.Method: Rosella leaf was macerated using 70% ethanol as solvent. Then filtered and thicken usin

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Uchegbu, Nneka, Eric Okoli, and Laura Okpala. "OPTIMISATION OF STEEPING AND GERMINATION TIMES ON THE ANTIOXIDANT POTENTIALS OF PIGEON PEA (CAJANUS CAJAN)." Suranaree Journal of Science and Technology 30, no. 3 (2023): 030111(1–8). http://dx.doi.org/10.55766/sujst-2023-03-e02053.

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In an attempt to maximize the antioxidant potentials of pigeon peas, the effect of steeping and germination times on the antioxidant content and radical scavenging activities of pigeon pea was investigated using response surface methodology. Using the central composite rotatable design (CCRD), pigeon pea seeds were soaked in water (2-28 h) and germinated (9-111 h). Thirteen samples were generated and analyzed for phenols, flavonoids, reducing power, 1, 1, Diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity and ferric reducing antioxidant power (FRAP). Results revealed that the qu

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Krishnan, Vijendren, Syahida Ahmad, and Maziah Mahmood. "Antioxidant Potential in Different Parts and Callus ofGynura procumbensand Different Parts ofGynura bicolor." BioMed Research International 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/147909.

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Plants from Gynura family was used in this study, namely,Gynura procumbensandGynura bicolor.Gynura procumbensis well known for its various medicinal properties such as antihyperglycaemic, antihyperlipidaemic, and antiulcerogenic; meanwhile,G. bicolorremains unexploited. Several nonenzymatic antioxidants methods were utilized to study the antioxidant capacity, which include ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay, total flavonoid content, total phenolic content, and ascorbic acid content determination. DPPH assay revealsG. procumbe

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7

Alam, Roshan, Haseeb Ahsan, and Saba Khan. "The Role of Malondialdehyde (MDA) and Ferric Reducing Antioxidant Power (FRAP) in Patients with Hypertension." Molecular and Cellular Biomedical Sciences 7, no. 2 (2023): 58. http://dx.doi.org/10.21705/mcbs.v7i2.288.

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Oxidative stress contributes to the pathogenesis of hypertension and studies have shown that hypertension is associated with an increase in oxidative stress. Reactive oxygen species (ROS) lead to hypertension and antioxidants may be beneficial for its prevention. The main cause of oxidative stress in hypertension is endothelial dysfunction due to the malfunctions in the vasodilator systems, specifically the molecular mechanism of ROS and nitric oxide (NO). The level of malondialdehyde (MDA), a biomarker of lipid peroxidation and oxidative stress, is found to be higher in hypertension patients.

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8

Maulida, Julva, Supran Hidayat Sihotang, and Syarifah Nadia. "SKRINING DAN UJI AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL DAUN SUKUN (Artocarpus altilis) DENGAN METODE FRAP (FERRIC REDUCING ANTIOXIDANT POWER)." Forte Journal 4, no. 1 (2024): 13–19. http://dx.doi.org/10.51771/fj.v4i1.665.

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Kesehatan bagi tiap manusia merupakan hal yang perlu dipelihara dan dijaga untuk menjalankan aktivitas dengan lancar. Namun banyak hal menyebabkan kesehatan tubuh menurun. Salah satu penyebabnya adalah radikal bebas yang merupakan pemicu bermacam penyakit. Oleh karena itu diperlukan antioksidan yang tinggi yang berasal dari salah satu bagian tumbuhan seperti daun sukun (Artocarpus altilis). Penelitian ini bertujuan untuk mengetahui adanya kandungan antioksidan pada daun sukun (Artocarpus altilis) dengan metode FRAP (Ferric Reducing Antioxidant Power). Ekstraksi daun sukun (Artocarpus altilis)

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9

Al Jaafreh, Ahmad M. "Evaluation of Antioxidant Activities of Rosemary (Rosmarinus officinalis L.) Essential Oil and Different Types of Solvent Extractions." Biomedical and Pharmacology Journal 17, no. 1 (2024): 323–39. http://dx.doi.org/10.13005/bpj/2860.

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The evaluation of the antioxidant activity of different solvents of rosemary extract would involve testing the efficacy of various solvents in extracting antioxidants. This can be done by measuring the antioxidant capacity of the extracts using different assays. The solvent that results in the highest antioxidant activity can then be considered the most effective for extraction purposes. This study examined the effects of several solvents on the extract of rosemary leaves, including its total phenolic content, total flavonoid content, total tannin content, and antioxidant activity. Six differe

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Sharopov, Farukh S., Michael Wink, and William N. Setzer. "Radical Scavenging and Antioxidant Activities of Essential Oil Components – An Experimental and Computational Investigation." Natural Product Communications 10, no. 1 (2015): 1934578X1501000. http://dx.doi.org/10.1177/1934578x1501000135.

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The antioxidant activities of eighteen different essential oil components have been determined using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay, the 2,2 ’-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS) radical cation assay, and the ferric reducing antioxidant power (FRAP) assay. The phenolic compounds, carvacrol, thymol, and eugenol, showed the best antioxidant activities, while camphor, menthol, and menthone were the least active. The structural and electronic properties of the essential oil components were assessed using density functional theory (DFT) at the

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11

Malinowska, Paulina. "Effect of flavonoids content on antioxidant activity of commercial cosmetic plant extracts." Herba Polonica 59, no. 3 (2013): 63–75. http://dx.doi.org/10.2478/hepo-2013-0017.

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Abstract The aim of this work was to evaluate the antioxidant capacity and flavonoids content in 10 commercial cosmetic plant extracts used in cosmetics industry. Antioxidant activity of plant extracts were measured using two methods: FRAP (Ferric Reducing Antioxidant Power) and TEAC (Trolox Equivalent Antioxidant Capacity). The relationship between flavonoids content and antioxidant capacity of plant extracts were checked. As a result of this research it was found that FRAP and TEAC values of plant extracts significantly depend on the flavonoids content. The highest antioxidant activity, both

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12

Nurhayati, Nuning, Fadilah Qonitah, and Ahwan Ahwan. "Aktivitas Antioksidan Fraksi N-Heksan Dan Fraksi Kloroform Ekstrak Etanol Daun Jeruk Purut (Citrus hystrix D.C) Dengan Metode FRAP (Ferric Reducing Antioxidant Power)." Lumbung Farmasi: Jurnal Ilmu Kefarmasian 3, no. 1 (2022): 84. http://dx.doi.org/10.31764/lf.v3i1.7457.

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ABSTRAKAntioksidan merupakan senyawa yang dapat menyeimbangkan ROS (reactive oxygen species) yang dapat menyebabkan penuaan kulit. Tubuh manusia secara alamiah dapat menghasilkan antioksidan akan tetapi jumlahnya terbatas sehingga perlu antioksidan eksogen. Daun jeruk purut merupakan tanaman yang mengandung senyawa fenolik dan flavonoid yang berpotensi sebagai antioksidan alami. Penelitian ini bertujuan untuk mengetahui aktivitas antioksidan fraksi n-heksan dan fraksi kloroform ekstrak etanol daun jeruk purut dengan metode FRAP (Ferric Reducing Antioxidant Power). Metode ekstraksi menggunakan

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13

Ivanova, Kristina, Ivan Bakalov, Vesela Shopska, Peter Nedyalkov, and Georgi Kostov. "Phytochemical Composition of Brewers’ Spent Grains." Acta Universitatis Cibiniensis. Series E: Food Technology 24, no. 1 (2020): 139–45. http://dx.doi.org/10.2478/aucft-2020-0012.

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AbstractBrewers’ spent grains (BSG) are the main waste product of the brewing industry, accounting for about 85% of the total waste materials. Their composition is different (due to various brewing technologies) but includes high levels of dietary fiber, proteins, essential amino acids, polyphenols, antioxidants, vitamins and fats. The aim of the present study was to investigate the phenolic content and antioxidant activity (the radical scavenging assay (DPPH) and ferric reducing antioxidant power (FRAP)) of 19 different malt types and their BSG. The highest phenolic content was demonstrated b

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14

Brainina, Khiena, Natalia Stozhko, and Marina Vidrevich. "Antioxidants: Terminology, Methods, and Future Considerations." Antioxidants 8, no. 8 (2019): 297. http://dx.doi.org/10.3390/antiox8080297.

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Unreliable terminology and incompatible units of antioxidant activity/concentration expression lead to the failure of antioxidant clinical trials, ambiguity of conclusions about the effect of a chosen therapy in medicine and evaluation of food quality, diet, difficulties using information in monitoring the training process in sports, etc. Many different terms (antiradical activity, antioxidant activity, antioxidant capacity, antioxidant power, antioxidant ability) and methods: Trolox equivalent capacity assay (TEAC), Ferric Reducing Antioxidant Power assay (FRAP), Cupric Reducing Antioxidant C

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15

Enríquez Estrella, Miguel Ángel. "Evaluation of the antioxidant capacity and phenolic content of the essential oil of dry and humid leaves of Guaviduca (Piper carpunya Ruiz & Pav.)." Semiárida: Revista de la Facultad de Agronomía UNLPam 31, no. 1 (2021): 9–15. http://dx.doi.org/10.19137/semiarida.2021(01).09-15.

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El presente estudio evaluó la capacidad antioxidante y contenido de compuestos fenólicos de la hoja cruda y seca de la Guaviduca (Piper carpunya Ruiz & Pav.), siendo la capacidad antioxidante determinada por el método FRAP (Ferric ion reducing antioxidant Power) y ABTS (Ácido 2,2 –azinobis (3etilbenzotiazolin) 6sulfónico), y el contenido de compuestos fenólicos totales usando el método FolinCiocalteau, como resultado evidenciamos que existe una elevada actividad fenólica en aceites esencial obtenido de las hojas húmedas así como la actividad antioxidante total por el método FRAP y ABTS. En

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16

Surachai, Techaoei, Jarmkom Khemjira, and Khobjai Warachate. "Total Antioxidant Capacity of Thai Herbal Teas by the Ferric Reducing Antioxidant Power." Applied Mechanics and Materials 886 (January 2019): 46–51. http://dx.doi.org/10.4028/www.scientific.net/amm.886.46.

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The main objective aimed to compare in vitro antioxidant power of different recipes of Thai herbal teas including of Tatirot, Krajeab, Kamfoi, and Kesorn Bua. The ferric reducing/antioxidant power (FRAP) assay was used to measure the total antioxidant power of freshly brewed tea. Results showed that different Thai tea recipes had slightly different in vitro antioxidant power. The herbal teas recipe was expressed as µM of antioxidant power/g of dried Thai tea recipes. Values ranges as 555.62±0.77-908.43±0.69 µM/1g of Thai herbal tea, especially Krajeab tea showed strongly antioxidant of 908.43±

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17

Ninlaor, Wanvisa, Thaksaorn Thongom, Chawapon Phoomphong, and Warachate Khobjai. "Evaluation of Free Radical Scavenging Activity and Reducing Power of Careya arborea Roxb." Applied Mechanics and Materials 886 (January 2019): 86–91. http://dx.doi.org/10.4028/www.scientific.net/amm.886.86.

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Antioxidant plays an important role in inhibiting and scavenging radicals, thus providing protection for human against infection and degenerative diseases. The aim of this study was to evaluate the effect of the solvent on the extraction of the antioxidant compounds from Careya arborea (CA) Roxb. The leaves of CA were extracted by using water, ethanol, methanol, and chloroform. The total phenolic content of the extracts was determined by the Folin-Ciocalteu reagent and their antioxidant activity was measured using 2, 2-diphenyl-1 picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRA

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18

Abhiram, G., A. Briyangari, and R. Sivakanesan. "The antioxidant activity, total phenolic and monomeric anthocyanin content of <em>Gymnema sylvestre</em> leaf aqueous extract." Journal of Dry Zone Agriculture 9, no. 1 (2023): 26–44. http://dx.doi.org/10.4038/jdza.v9i1.68.

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The Gymnema sylvestre is a widely recognized medicinal plant, particularly for its effectiveness in treating diabetes. Aim of this study is to measure the antioxidant property, polyphenol and anthocyanin content of G. sylvestre aqueous extract using various in-vitro techniques. The aqueous extract was prepared and total phenolic compounds (TPC), DPPH (2,2-Diphenyl-1-Picrylhydrazyl) radical scavenging ability, total antioxidant activity using ferric reducing antioxidant power (FRAP), ferric reducing power and monomeric anthocyanin content were estimated. Correlation analyses were performed for

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El Jemli, Meryem, Rabie Kamal, Ilias Marmouzi, Asmae Zerrouki, Yahia Cherrah, and Katim Alaoui. "Radical-Scavenging Activity and Ferric Reducing Ability ofJuniperus thurifera(L.),J. oxycedrus(L.),J. phoenicea(L.) andTetraclinis articulata(L.)." Advances in Pharmacological Sciences 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/6392656.

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Objective. The aim of this work is to study and compare the antioxidant properties and phenolic contents of aqueous leaf extracts ofJuniperus thurifera,Juniperus oxycedrus,Juniperus Phoenicea,andTetraclinis articulatafrom Morocco.Methods. Antioxidant activities of the extracts were evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical-scavenging ability, Trolox equivalent antioxidant capacity (TEAC), and ferric reducing antioxidant power (FRAP) assays. Also the total phenolic and flavonoids contents of the extracts were determined spectrophotometrically.Results. All the extracts showe

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Mandokhail, Aminullah, Samiullah Samiullah, Naqeebullah Khan, et al. "Determination of Antioxidants by Four Different Methods in Medicinally Important Plant Ebenus Stellata of Balochistan." Al-Nahrain Journal of Science 23, no. 4 (2020): 13–18. http://dx.doi.org/10.22401/anjs.23.4.03.

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The quantification of a plant, which is vital in medication bearing antioxidant activity of the North West area of the province Balochistan Ebenus Stellata family Fabaceae is explained in this paper. The plant composition was determined chemically through well-known four analytical tests and sensitive EMR operating techniques. The crude extract was obtained from the plant by using methanol, and the antioxidant activity of that extract was measured. Additionally, with the help of spectrophotometer, antioxidant potentials were determined through the DPPH (2, 2-Diphenyl-1-Picrylhydrazyl) assay, F

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Jafri, Syed Anis Ali, Zafar Mahmood Khalid, Muhammad Zakryya Khan, and NaqeebUllah Jogezai. "Evaluation of phytochemical and antioxidant potential of various extracts from traditionally used medicinal plants of Pakistan." Open Chemistry 20, no. 1 (2022): 1337–56. http://dx.doi.org/10.1515/chem-2022-0242.

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Abstract The antioxidant potential of various extracts was evaluated using different antioxidant assays such as 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay, ferric reducing antioxidant power (FRAP) assay, and 2,2-azinobis-ethylbenzothiozoline-6-sulphonic acid (ABTS) using UV spectrophotometer. The highest absorbance was observed in ethanolic extracts (EEs) of Euphrasia stricta 71.92 ± 1.22%, 65.77 ± 1.38%, and 67.88 ± 0.74%, followed by methanolic extracts (MEs) 70.14 ± 0.82%, 64.84 ± 0.74%, and 65.48 ± 1.40% for DPPH assay (517 nm), FRAP assay (700 nm), and ABTS assay (734 nm), respectively. T

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Petridis, Antonios, Magdalene Koukourikou, Thomas Sotiropoulos, and Dimitrios Stylianidis. "Antioxidant Activity of Fruits Produced in Northern Greece." HortScience 45, no. 9 (2010): 1341–44. http://dx.doi.org/10.21273/hortsci.45.9.1341.

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The antioxidant activities (μmol ascorbic acid equivalent/g fresh weight) of the edible part of fruits grown in northern Greece were determined using the ferric-reducing antioxidant power (FRAP) assay. Differences were observed among species as well as cultivars of the same species. Cornelian cherry had the highest FRAP value followed by jujube. Cherries, black grapes, and blackberry showed high activity followed by pears, persimmons, plums, peaches, white grapes, pomegranates, apples, nectarines, kiwifruits, quinces, figs, and apricots.

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M.M., Adeyemi, and Osilesi O. "Comparative in Vitro Antioxidant Activities of Methanol Extracts OF Phragmanthera incana Leaves from Guava, Cashew, Mango and Kolanut Trees." African Journal of Biology and Medical Research 6, no. 1 (2023): 35–41. http://dx.doi.org/10.52589/ajbmr-citemqlo.

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The therapeutic effects of several plants used in traditional medicine are usually attributed to their antioxidant potential. Phragmanthera incana belonging to the family Loranthaceae is a species of mistletoe commonly found in South-Western part of Nigeria and used ethno-medicinally in the management of diseases such as diabetes, hypertension and oxidative stress. This study evaluates and compare the antioxidant potential of methanol extracts of P. incana leaves hemi-parasitic on Guava, Cashew, Mango and Kolanut trees using 1,1-diphenyl-2-picrylhydrazyl (DPPH), Ferric Reducing Antioxidant Pow

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Duy, Nguyen Quoc, Huynh Anh Thoai, Tri Duc Lam, and Xuan Tien Le. "Effects of Different Extraction Solvent Systems on Total Phenolic, Total Flavonoid, Total Anthocyanin Contents and Antioxidant Activities of Roselle (Hibiscus sabdariffa L.) Extracts." Asian Journal of Chemistry 31, no. 11 (2019): 2517–21. http://dx.doi.org/10.14233/ajchem.2019.22147.

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This study aims to investigate the variations in total phenolic content, total anthocyanin content, total flavonoid content and the antioxidant capacity of Roselle extracts in various extraction solvents. Extracts produced using three solvent systems (methanol, ethanol and acetone) at three different concentrations (50, 70 and 90 % (v/v)) were compared roselle calyx extract produced using distilled water. The antioxidant capacities of roselle calyx extracts were evaluated using DPPH free radical-scavenging capacity, ferric reducing antioxidant power (FRAP) and reducing power. The extraction ef

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Saundane, Anand R., Vaijinath A. Verma, and Vijaykumar T. Katkar. "Synthesis and Antimicrobial and Antioxidant Activities of Some New 5-(2-Methyl-1H-indol-3-yl)-1,3,4-oxadiazol-2-amine Derivatives." Journal of Chemistry 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/148412.

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A series of 5-(2-methyl-1H-indol-3-yl)-1,3,4-oxadiazol-2-amine derivatives (3–5) were synthesized. These previously unknown compounds were characterized by spectral studies and elemental analysis. These compounds were evaluated for their antimicrobial and antioxidant activities. Among all the compounds tested5dexhibited promising antibacterial, antifungal, radical scavenging, and ferric ions (Fe3+) reducing antioxidant power (FRAP) activities, whereas the compounds3b,4c, and5eexhibited good FRAP and metal chelating activities. In general compounds containing chloro and methyl substituent exhib

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Zhang, Xiu-Li, Yong-Dong Zhang, Tao Wang, Hong-Yun Guo, Qi-Ming Liu, and Hai-Xiang Su. "Evaluation on Antioxidant Effect of Xanthohumol by Different Antioxidant Capacity Analytical Methods." Journal of Chemistry 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/249485.

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Several assays have been frequently used to estimate antioxidant capacities includingABTS•+, DPPH, and FRAP assays. Xanthohumol (XN), the major prenylated flavonoid contained in beer, witnessed various reports on its antioxidant capacity. We systematically evaluated the antioxidant activity of XN using three systems, 2,2,-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS•+) scavenging assays, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical assays, and ferric reducing antioxidant power (FRAP) assays. The results are expressed as Trolox equivalent antioxidant capacity (TEAC). The TEAC of XN wa

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Zayyanu Abdullahi, Shamsu Nasiru, Usman Abubakar, Isah Musa Fakai, and Jude Nwaogu. "Phytochemicals and In vitro antioxidants screening of aqueous unripe fruits extract of Musa acuminate." World Journal of Biology Pharmacy and Health Sciences 22, no. 3 (2025): 340–51. https://doi.org/10.30574/wjbphs.2025.22.3.0587.

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Musa acuminata remains an essential fruit and its consumption has been increased due to its nutritional content and medicinal properties. This study aims at evaluating the phytochemicals constituents and antioxidants properties of aqueous unripe fruits extract of Musa acuminata. The phytochemicals constituents were detected using standard tests methods. The total flavonoids and phenolic contents were determined using folic-ciocalteau method. Free radical scavenging activity and ferric reducing power of the extract was evaluated using 1, 1-diphenyl-2-picryl-hydrazyl (DPPH) and ferric reducing a

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Journal, Baghdad Science. "Determination of total phenol, antioxidant and antimicrobial activities of Avena sativa and Ocimum basilicum." Baghdad Science Journal 11, no. 2 (2014): 1062–66. http://dx.doi.org/10.21123/bsj.11.2.1062-1066.

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The present study investigated the total content of phenolic compounds, antioxidant and antimicrobial activities of water extracts oat (Avena sativa) and basil (Ocimum basilicum), medicinal plants. The Folin-ciocalteu reagent assay was used to estimate the total phenolic content of plants extract. The antioxidant capacity of the plants extract was tested by ferric reducing/antioxidant power Assay (FRAP) and ferric reducing scavenging activity using DPPH method, and the antimicrobial activity was measured against [Staphylococcus epidermidis; Staphylococcus aureus; Proteus spp.; Klebsiella spp.;

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Salim, Farah D., Sundus H. Ahmed, Anaam M. Abd, Shatha Z. Skben, and Nuha AZ Ramadhan. "Determination of total phenol, antioxidant and antimicrobial activities of Avena sativa and Ocimum basilicum." Baghdad Science Journal 11, no. 2 (2014): 1062–66. http://dx.doi.org/10.21123/bsj.2014.11.2.1062-1066.

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The present study investigated the total content of phenolic compounds, antioxidant and antimicrobial activities of water extracts oat (Avena sativa) and basil (Ocimum basilicum), medicinal plants. The Folin-ciocalteu reagent assay was used to estimate the total phenolic content of plants extract. The antioxidant capacity of the plants extract was tested by ferric reducing/antioxidant power Assay (FRAP) and ferric reducing scavenging activity using DPPH method, and the antimicrobial activity was measured against [Staphylococcus epidermidis; Staphylococcus aureus; Proteus spp.; Klebsiella spp.;

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Azad, Nazneen, and Chumkijini Chhatria. "Antioxidant Activity of Hydroethanolic Extracts of Asteracantha longifolia and Moringa oleifera Using DPPH, Nitric Oxide, Hydrogen Peroxide and Frap Model." Asian Journal of Biology 21, no. 7 (2025): 120–29. https://doi.org/10.9734/ajob/2025/v21i7534.

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Aims: The current study was conducted to evaluate and compare the antioxidant activity of 70% ethanolic extracts of Asteracantha longifolia (aerial parts and roots) and Moringa oleifera (stem and leaves) using four In vitro models: DPPH, nitric oxide (NO), hydrogen peroxide (H₂O₂), and ferric reducing antioxidant power (FRAP) assays. Study Design: The plant parts, such as the aerial parts and roots of Asteracantha longifolia and the stem and leaves of Moringa oleifera were collected from nearby areas of Sambalpur district. Dust particles were removed by washing with tap water followed by disti

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Saha, Priyanka, Anupam Das Talukdar, and Manabendra Dutta Choudhury. "ANTIOXIDANT POTENTIAL PROFILE OF PAJANELIA LONGIFOLIA (WILLD.) K. SCHUMAN.; POTENTIAL NEW SOURCES OF NATURAL ANTIOXIDANT." Asian Journal of Pharmaceutical and Clinical Research 10, no. 6 (2017): 184. http://dx.doi.org/10.22159/ajpcr.2017.v10i6.17750.

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Objectives: The aim of the present work is to screen the antioxidant potentiality of the bark extracts of Pajanelia longifolia (Willd.) K. Schuman, ethnomedicinally prescribed plant as hepatoprotective. Methods: Bark extract was prepared using Soxhlet apparatus. Total phenol, flavonoid, total alkaloid were analyzed using Folin–Ciocalteu assay, aluminum chloride calorimetric assay, atropine standard, respectively. Antioxidant capacity and free radical scavenging potentialities were done by various in vitro methods, viz.; 1,1-diphenyl-2-picrylhydrazyl (DPPH), hydrogen peroxide scavenging activit

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Yefrida, Yefrida, Hamzar Suyani, Hermansyah Aziz, and Mai Efdi. "Comparison of Iron Reduction Methods on the Determination of Antioxidants Content in Vegetables Sample." Oriental Journal of Chemistry 34, no. 5 (2018): 2418–24. http://dx.doi.org/10.13005/ojc/340525.

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Determination of antioxidant content in 14 vegetables has been done using Modified Phenanthroline (MPM), Phenanthroline (PM) and Ferric Reducing Antioxidant Power (FRAP) methods. The SDR values obtained for the MPM and PM methods were (2.65 ± 1.26) % and (3.51 ± 0.88) %, while the recovery values were (100.86 ± 4.45)% and (99.93 ± 3.50) %, respectively. The antioxidant content of vegetables obtained by MPM, PM and FRAP methods were (30.4 ± 1.46 - 515.9 ± 3.32), (25.9 ± 1.13 - 327.3 ± 2.57) and (21.4 ± 0.51 - 371.7 ± 1.10) μmol Fe / g DW, respectively. The antioxidant content obtained with

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Azman, Nur Fatin Inazlina Noor, Azrina Azlan, Hock Eng Khoo, and Muhammad Rizal Razman. "Antioxidant Properties of Fresh and Frozen Peels of Citrus Species." Current Research in Nutrition and Food Science Journal 7, no. 2 (2019): 331–39. http://dx.doi.org/10.12944/crnfsj.7.2.03.

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Citrus peel is a functional food. It is rich in antioxidants. This study aims to investigate the antioxidant properties of selected fresh and frozen peels of Citrus species. Frozen and fresh peels of lemon (Citrus limon), key lime (C. aurantifolia) and musk lime (C. microcarpa) were screened for their antioxidant properties such as total phenolic content and total flavonoid content. DPPH radical scavenging activity and ferric ion reducing antioxidant power (FRAP) assays were also determined. Among the three citrus peels, musk lime peel had the significantly highest total phenolic content and t

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Rohman, Abdul, H. Widodo, E. Lukitaningsih, M. Rafi, Nurrulhidayah A.F., and A. Windarsih. "Review on in vitro antioxidant activities of Curcuma species commonly used as herbal components in Indonesia." Food Research 4, no. 2 (2019): 286–93. http://dx.doi.org/10.26656/fr.2017.4(2).163.

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Free radicals, reactive nitrogen species (RNS) and reactive oxygen species (ROS) have been known to contribute several degenerative diseases such as cardiovascular diseases, aging, certain types of cancers, rheumatoid arthritis, neurodegenerative, and diabetes mellitus. In order to overcome the negative effects of these radicals, some scientists have explored some natural antioxidants from plants and it's by-products. The antioxidant can be defined as any substances or samples capable of inhibiting free radical reactions in the oxidation reaction. Due to curcuminoids contained, Curcuma species

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Tiwari, Raj Kumar, Udayabanu Malairaman, and Silpi Chanda. "EVALUATION OF IN VITRO- ANTI-OXIDANT POTENTIAL OF AQUEOUS ROOT EXTRACT OF CLERODENDRUM SERRATUM L." Asian Journal of Pharmaceutical and Clinical Research 10, no. 4 (2017): 402. http://dx.doi.org/10.22159/ajpcr.2017.v10i4.16930.

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Objective: The intent of this report was to investigate the effect of aqueous root extract of Clerodendrum serratum L. for antioxidant activity using divergent models viz. DPPH scavenging assay, Superoxide scavenging assay and Ferric Reducing Antioxidant Power (FRAP) assay.Materials and Methods: The root of C. serratum was extracted using water. The yield of aqueous extract was 10%w/w. The outcome was examined statistically by the regression method.Results and discussions: The IC50 values are 85.43 µg/ml and 107.59 µg/ml for DPPH radical scavenging and Superoxide scavenging assay respectively

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Zhang, Gui Zhi, Bao Ping Ji, and Gang Chen. "Antioxidant Activities and Phenolic Composition of Apple Peel, Core and Flesh Extracts on Selected Apple Cultivars." Advanced Materials Research 554-556 (July 2012): 1103–9. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.1103.

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Phenolic antioxidants have multiple benefits to human health. Polyphenols are responsible for the antioxidant activity in apples. Antioxidant activities were assessed using the ferric reducing/antioxidant power (FRAP) and 2,2-dipheny l-1-picrylhydrazyl (DPPH) radical scavenging assays in different cultivars and different parts of apples grown in China. The phenolic compounds and antioxidant activities differed significantly among the four apple cultivars. Guoguang had the highest phenolic concentration and antioxidant activity and Golden Delicious had the lowest. The peels had the highest tota

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Utari, Andi Ulfiana, Nurhikma A, and Eka Astuti. "Antioxidant Activity Test of Caulerpa racemosa Extract from Takalar District Using the FRAP (Ferric Reducing Antioxidant Power) Method." NSMRJ: Nusantara Scientific Medical Research Journal 2, no. 01 (2023): 45–54. http://dx.doi.org/10.58549/nsmrj.v2i01.67.

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Sea grapes or Caulerpa racemosa contain alkaloids, flavonoids, tannins, phenols and steroids. These compositions work as antioxidants. Antioxidants are compounds that can contribute one or more electrons to free radicals, so that the free radicals can be suppressed. The goal of this study was to determine the antioxidant activity of sea grape (Caulerpa racemosa) extract using the FRAP method. Extraction of sea grapes (Caulerpa racemosa) applied maceration and methanol methods. Absorbance of antioxidant activity was measured using a UV-VIS spectrophotometer at a wavelength of 700 nm. The result

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Benzie, Iris F. F., and J. J. Strain. "The Ferric Reducing Ability of Plasma (FRAP) as a Measure of “Antioxidant Power”: The FRAP Assay." Analytical Biochemistry 239, no. 1 (1996): 70–76. http://dx.doi.org/10.1006/abio.1996.0292.

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Vifta, Rissa Laila, and Fania Putri Luhurningtyas. "Nanoparticle from Medinilla speciosa with Various of Encapsulating Agent and Their Antioxidant Activities Using Ferric Reducing Assay." Indonesian Journal of Cancer Chemoprevention 11, no. 1 (2020): 22. http://dx.doi.org/10.14499/indonesianjcanchemoprev11iss1pp22-29.

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Antioxidants are agents that can reduce free radicals. Parijoto fruit (Medinilla speciosa) contains flavonoids that could act as an antioxidant. However, those flavonoids are water-soluble and show low bioavailability. Nanotechnology is a potential approach to improve the bioavailability of flavonoids from Parijoto fruit. This study was conducted to determine the antioxidant activity of parijoto nanoparticles with variations of the chitosan, alginate, and chitosan/alginate encapsulants. Secondary metabolites of parijoto fruit were using the maceration method. The synthesis of parijoto nanopart

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Sudan, Rasleen, Madhulika Bhagat, Sahil Gupta, Jasvinder Singh, and Anupurna Koul. "Iron (FeII) Chelation, Ferric Reducing Antioxidant Power, and Immune Modulating Potential ofArisaema jacquemontii(Himalayan Cobra Lily)." BioMed Research International 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/179865.

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This study explored the antioxidant and immunomodulatory potential of ethnomedicinally valuable species, namely, Arisaema jacquemontiiof north-western Himalayan region. The tubers, leaves, and fruits of this plant were subjected to extraction using different solvents.In vitroantioxidant studies were performed in terms of chelation power on ferrous ions and FRAP assay. The crude methanol extract of leaves was found to harbour better chelating capacity (58% at 100 μg/mL) and reducing power (FRAP value1085.4±0.11 μMFe3+/g dry wt.) than all the other extracts. The crude methanol extract was thus f

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Bingol, Muhammed Nuri, and Ercan Bursal. "LC-MS/MS Analysis of Phenolic Compounds and In Vitro Antioxidant Potential of Stachys lavandulifolia Vahl. var. brachydon Boiss." International Letters of Natural Sciences 72 (November 2018): 28–36. http://dx.doi.org/10.18052/www.scipress.com/ilns.72.28.

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The identification and quantification of phenolic compounds of Stachys lavandulifolia Vahl. var. brachydon Boiss. by LC-MS/MS (Liquid Chromatography- tandem Mass Spectrometry) technique is the main purpose of the current study. The high concentrations of quinic acid (2534±12 ppb) and chlorogenic acid (1882±92 ppb) were detected by LC-MS/MS.. Another goal of the study is to evaluate the antioxidant activities of both ethanol and aqueous extracts of the plant material. The antioxidant potentials of extracts were determined by using five different in vitro methods including; ABTS (2,2′-Azino-bis-

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Bingol, Muhammed Nuri, and Ercan Bursal. "LC-MS/MS Analysis of Phenolic Compounds and <i>In Vitro</i> Antioxidant Potential of <i>Stachys lavandulifolia </i>Vahl. var.<i> brachydon </i>Boiss." International Letters of Natural Sciences 72 (November 7, 2018): 28–36. http://dx.doi.org/10.56431/p-5vckk2.

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The identification and quantification of phenolic compounds of Stachys lavandulifolia Vahl. var. brachydon Boiss. by LC-MS/MS (Liquid Chromatography- tandem Mass Spectrometry) technique is the main purpose of the current study. The high concentrations of quinic acid (2534±12 ppb) and chlorogenic acid (1882±92 ppb) were detected by LC-MS/MS.. Another goal of the study is to evaluate the antioxidant activities of both ethanol and aqueous extracts of the plant material. The antioxidant potentials of extracts were determined by using five different in vitro methods including; ABTS (2,2′-Azino-bis-

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Priyanthi, C., and R. Sivakanesan. "The Total Antioxidant Capacity and the Total Phenolic Content of Rice Using Water as a Solvent." International Journal of Food Science 2021 (March 27, 2021): 1–6. http://dx.doi.org/10.1155/2021/5268584.

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Background. The present study evaluates the antioxidant properties of some Sri Lankan red rice varieties using water extracts. Methods. Water extracts of rice varieties Attakkari, Bg2907, and Bg407 were used in this study. The total antioxidant capacity was measured by ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, and reducing power assays. The total phenolic content (TPC), total flavonoid content (TFC), monomeric anthocyanin, and condensed tannin contents were measured by Folin-Ciocalteu, aluminium chloride, pH differential, and vanillin as

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GÖYCINCIK, Sezer, та Hatice DANAHALİLOĞLU. "Antioxidant and Antibacterial Activities of Salen-type Schiﬀ Base and Metal Complexes". Bitlis Eren Üniversitesi Fen Bilimleri Dergisi 12, № 2 (2023): 329–36. http://dx.doi.org/10.17798/bitlisfen.1185118.

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2-Aminobenzylamine based unsymmetrical salen type Schiﬀ base and its Cu(II), Ni(II),Co(II) and Fe(III) metal complexes were researched in terms of their antioxidant and antibacterial activities in this study. 1,1-Diphenyl-2-picrylhydrazyl radical scavenging (DPPH) method, ferric reducing antioxidant power (FRAP) method and cupric reducing antioxidant capacity (CUPRAC) method were carried out for determination of antioxidant effects of compounds. The antioxidant activity of the compounds were compared with the standard antioxidants butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BH

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Cui, Xuejing, Xuezhu Gu, and Wenyi Kang. "ANTIOXIDANTACTIVITYIN VITRO AND HEPATOPROTECTIVE EFFECTS IN VIVO OF COMPOUND LOBELIA." African Journal of Traditional, Complementary and Alternative Medicines 13, no. 5 (2016): 114–22. http://dx.doi.org/10.21010/ajtcam.v13i5.15.

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Background: Chinese medicine has its own uniqueness, advantageous in the treatment of hepatic diseases, and they were widely used in the oxidation.At the same time, oxidation is one of the mechanism of protect liver. Materials and Methods: In the present study, the antioxidant activity in vitro of different extracts from Compound Lobelia were estimated respectively by the methods of measuring the [2,2′-azino-bis(3-ethylbenzothiazoline)-6-sulphonic acid] diamonium salt (ABTS) radical scavenging, ferric reducing antioxidant power (FRAP). The protective effects on carbon tetrachloride (CCl4)-indu

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Popović, Boris M., Dubravka Štajner, Ružica Ždero, Saša Orlović, and Zoran Galić. "Antioxidant Characterization of Oak Extracts Combining Spectrophotometric Assays and Chemometrics." Scientific World Journal 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/134656.

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Antioxidant characteristics of leaves, twigs, and acorns from two Serbian oak speciesQuercus roburL. andQuercus petraeaL. from Vojvodina province (northern Serbia) were investigated. 80% ethanol (in water) extracts were used for antiradical power (ARP) determinations againstDPPH•,NO•, andO2∙-radicals, ferric reducing antioxidant power (FRAP), total phenol, tannin, flavonoid, and proanthocyanidin contents. Permanganate reducing antioxidant capacity (PRAC) was determined using water extracts. Beside, mentioned parameters, soluble proteins, lipid peroxidation (LP), pigments and proline contents w

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Magaji, Peace Asaph, Aminu Muhammad, and Philip Shadrach. "Antioxidant Activities and FT-IR of Azanza garckeana Leaves Extracts." African Journal of Biochemistry and Molecular Biology Research 1, no. 1 (2024): 459–70. https://doi.org/10.58578/ajbmbr.v1i1.3486.

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The objective of this study is to eval_uate the antioxidant activities of three extracts of Azanza garckeana leaves. Azanza garckeana fruits, seeds and roots have been reported to cure cough, liver disorders, abscess, diabetes, infertility and mental sickness. Natural antioxidants found in plants help to reduce oxidative stress in the body that lead to variety of health issues, including heart disease, diabetes, muscular degeneration, and cancer. The antioxidant activities of Azanza garckeana leaves extracts were determined by 2,2-diphenyl-1-picryhydrazyl (DPPH) and Ferric reducing antioxidant

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Asnah, Nur, Megawati Megawati, and Hesty Parbuntari. "Analisis In Vitro Aktivitas Antioksidan Ekstrak Aseton dari Ranting Horsfieldia macrothyrsa Menggunakan Beragam Metode." Jurnal Sumberdaya Hayati 10, no. 2 (2024): 48–53. http://dx.doi.org/10.29244/jsdh.10.2.48-53.

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Horsfieldia macrothyrsa (Miq) Warb. is a plant that contains secondary metabolite compounds that can act as antioxidants. This research aims to determine the antioxidant potential of the acetone extract of the H. macrothyrsa plant by looking at the IC50 value. Twigs of the H. macrothrysa plant were extracted using the maceration method using acetone solvent. The results of the antioxidant activity test using the DPPH (2,2-diphenyl-1-picrylhydrazyl) method showed very strong antioxidant activity with an IC50 value of 6.348 µg/ml whereas the IC50 value of the standard antioxidant quercetin is an

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Lamiaa A. Gharb. "Comparison between the Antioxidant Activity of Volatile Oil and Hydrosol in Eucalyptus Camaldulensis (Young and Adult) Leaves." Indian Journal of Public Health Research & Development 11, no. 1 (2020): 1224–28. http://dx.doi.org/10.37506/ijphrd.v11i1.852.

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Essential oils have been reported as an important compounds in the pharmaceutical industries for their antibacterial and antioxidant activity. This study was conducted to investigate the antioxidant activity of Eucalyptus camaldulensis volatile oil and hydrosol obtained from young and adult leaves. Oil extraction was carried out by using steam distillation method. The antioxidant power was estimated by using the DPPH (2,2-diphenyl-1,1-picrylhydrazyl) and FRAP(ferric reducing antioxidant power) assays. Butylated hydroxy toluene (BHT) was used as positive control. The results show that young lea

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Prasad, K. Nagendra, Lye Yee Chew, Hock Eng Khoo, Kin Weng Kong, Azrina Azlan, and Amin Ismail. "Antioxidant Capacities of Peel, Pulp, and Seed Fractions ofCanarium odontophyllumMiq. Fruit." Journal of Biomedicine and Biotechnology 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/871379.

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Antioxidant capacities of ethylacetate, butanol, and water fractions of peel, pulp, and seeds ofCanarium odontophyllumMiq. (CO) were determined using variousin vitroantioxidant models. Ethylacetate fraction of peel (EAFPE) exhibited the highest total phenolic (TPC), total flavonoid content (TFC), and antioxidant activities compared to pulp, seeds, and other solvent fractions. Antioxidant capacities were assayed by total antioxidant capability, 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical activity, ferric reducing antioxidant power (FRAP), and hemoglobin oxidation assay. Total phenolic content

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