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33 articles for “Peroxy radical”
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A Study of Hyperfine Interactions of Peroxy Radicals in Irradiated PE Copolymer at Low Temperatures
Abstract: Hyperfine interactions occurring around the magnetic environment of peroxy radical are investigated by electron spin resonance (ESR) technique. For this purpose, ESR spectra are recorded in the temperature range of 77 to 300 K. ESR spectra at 77 K possess some hyperfine structure together with peroxy doublet; while at high temperatures only peroxy doublet is observed. Hyperfine parameters like g-values, peak to peak separation, spread are calculated and their temperature …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 8, Issue 2, 2017 · pp. 13–19 Read article
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In vitro Antioxidant Activity of Calotropis Procera
Abstract: Antioxidant activity of root of Calotropis procera extract was evaluated in a series of in vitro assay involving free radicals. IC50 values were determined. Extracts of I. coccinea exhibited scavenging effect in concentration dependent manner in all in vitro method. IC50 of ethyl acetate extract was 48.43, 75.811 and 60.60 μg/ml for 2,2-diphenylpicrylhydrazyl radical scavenging, hydrogen peroxide scavenging, and nitric oxide scavenging, respectively. Ethyl acetate extract shows good in vitro …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 4, Issue 2, 2014 · pp. 11–14 Read article
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Electron beam irradiation studies of polyethylene maleic anhydride on their Chemical and Thermal properties.
Abstract: The electron beam (e-beam) irradiation effects on polyethylene maleic anhydride (MANPE) are investigated by spectroscopic and thermal methods. The MANPE irradiated with electron beam to a radiation dose of 30, 60 and 90 K Gy and the resultant changes in their chemical structure and thermal properties have been investigated by Electron spin resonance (ESR), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electron microscopy …
Published in Journal of Polymer & Composites · Vol. 6, Issue 2, 2018 · pp. 17–30 Read article
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Comparative Evaluation of In Vitro Antioxidant Activity of Bark, Flowers and Fruit Extracts of Pongamia pinnata
Abstract: In Indian history, the use of herbal remedies for various diseases has proved its efficacy. Free radicals are the main cause of disease such as diabetes, hypertension, inflammation, etc. The various parts of plant Pongamia pinnata possess good antioxidant activities. The objective of the study was to determine free radical scavenging activity of various plant parts by in vitro free radical scavenging assay such as DPPH assay, ABTS radical decolorization …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 2, Issue 2, 2015 · pp. 14–21 Read article
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Electron Beam and Gamma Radiation Dose Dependency on the Degradation Products of Polytetrafluoroethylene (PTFE)
Abstract: AbstractGamma radiation induced degradation phenomena of polytetrafluoroethylene (PTFE) in the form of granules has been studied. The Electron Spin Resonance (ESR) technique was used to study radical generation and behavior under different conditions. The ESR spectra of PTFE irradiated at low or very high doses of irradiation were doublets, characteristic of peroxy radicals. Similarly spectra at different temperatures are also doublets. In order to study nature of free radicals, the …
Published in Research & Reviews : Journal of Physics · Vol. 8, Issue 1, 2019 · pp. 104–114 Read article
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Differential Susceptibility of Bacteriophage and Viruses to Reactive Oxygen Species
Abstract: Normal 0 false false false EN-US X-NONE X-NONE Reactive oxygen species of superoxide, hydrogen peroxide, and hydroxyl radicals were generated by mixing xanthine, xanthine oxidase and iron citrate and incubating for 5 min at room temperature. T2 bacteriophage, encephalomyocarditis (EMC) virus, adenovirus, or vaccinia virus particles were incubated with the solution for various periods of time after reactive oxygen species were formed. Physical damage to the virus particles that affected …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 6, Issue 2, 2016 · pp. 7–12 Read article
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In vitro/In vivo Study of Anti-inflammatory Effect of Cyperus rotundus on Diabetic Complications
Abstract: The reactive oxygen species (ROS) develop oxidative stress that contributes to the cause of human diseases. Radicals which enhance inflammation are nitric oxide, hydroxyl radical, hydrogen peroxide, and superoxide. Anion mediate and amplify the inflammation process, mediate vascular permeability and platelet aggregation leading to diabetic complications due to disruption of steady state of pro-oxidants and antioxidants. Cyperus rotundus plant extract was subjected to foraging radical activity with hemolysate sample to …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 9, Issue 1, 2019 · pp. 24–32 Read article
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Antioxidant Property and Stability of an Indigenous Traditional Food Daangar pachadi
Abstract: In South India, a traditional food namely Daangar pachadi is prepared from black gram, cumin and yoghurt and consumed occasionally in certain places of Tamil Nadu, India. Even though several health benefits of yoghurt is proven scientifically, the health benefits of incorporation of black gram and cumin seeds in yoghurt is not yet investigated. In addition, effect of removal of seed coat from black gram on the total phenolic content …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 6, Issue 3, 2017 · pp. 22–31 Read article
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Arsenic Induced Oxidative Stress and Its Possible Reversal by Chelation Therapy
Abstract: Arsenic (As) is a metalloid listed in group Va of the periodic chart. It exists in nature in the oxidation states +V (arsenate), +III (arsenite), 0 (arsenic) and −III (arsine). In the aqueous environment inorganic arsenic appears commonly in the oxidation states +V and +III as arsenous acid (As (III)), arsenic acid (As (V)), and their salts. Chronic and acute exposures of arsenic leads to cancer, cardiovascular disease (hypertension and …
Published in Research and Reviews: A Journal of Toxicology · Vol. 2, Issue 2, 2012 · pp. 16–37 Read article
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Role of Endogenous and Exogenous Glutathione in the Detoxification of Free Radicals
Abstract: The aging process and disease progression are the result of cellular damage by free radicals. Our first lines of defense against free radical damage are the antioxidants. They are critical for keeping optimal health and wellbeing. The need for antioxidants becomes more critical with increased exposure to free radicals. Pollution, drugs, cigarette smoke, illness, stress, and even exercise can increase free radical exposure. The accumulation of free radicals produced from …
Published in Research and Reviews: A Journal of Toxicology · Vol. 7, Issue 1, 2017 · pp. 1–14 Read article
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Therapeutic Prospects and Comparative Bioactive Evaluation of Fenugreek Seed Extracts
Abstract: A medicinal plant with substantial therapeutic potential, fenugreek (Trigonella foenum-graecum L.) is rich in bioactive phytoconstituents. The phytochemical makeup and antioxidant properties of aqueous and methanolic fenugreek seed extracts were compared in this study. Phenolics, flavonoids, terpenoids, alkaloids, tannins, and saponins were found in both extracts, with the methanolic fraction showing greater intensity, according to preliminary phytochemical screening. The methanolic extract has higher levels of phenolic, flavonoid, and terpenoid content, …
Published in Research & Reviews : Journal of Botany · Vol. 15, Issue 2, 2026 · pp. 64–75 Read article
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Ameliorating Effect of Vitamin C on Acid Orange 7 Induced Oxidative Stress in the Gill of the Fish, Anabas testudineus (Bloch, 1792)
Abstract: Acid orange 7, an azo dye, was exposed to Anabas testudineus at a sublethal concentration (0.27 g/l) for 24, 72 and 96 h in order to evaluate the antioxidant status in the gill tissue. In addition, vitamin C at 0.55 g/l was exposed for 7 days after the dye exposure. Acid orange 7 decreased the body weight of fish, whereas mucous deposition increased significantly as the first line of defensive …
Published in Research and Reviews: A Journal of Toxicology · Vol. 8, Issue 3, 2018 · pp. 15–27 Read article
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Development of Antioxidant Based Therapeutics in Unani System of Medicine
Abstract: During the last decades, several studies have examined the potential role of oxidative stress in the development of various diseases like cancer, Parkinson's disease, Alzheimer's disease, atherosclerosis, myocardial infarction, chronic fatigue syndrome etc. Oxidative stress can cause toxic effects through the production of peroxides and free radicals that damage all components of the cell, including proteins, lipids, and DNA. Unani system of medicine has a wealth of antioxidants that can …
Published in Research & Reviews : A Journal of Unani, Siddha and Homeopathy · Vol. 5, Issue 3, 2018 · pp. 1–4 Read article
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Identification and Quantification of Anti-inflammatory Compound in Michelia champaca
Abstract: Ferulic acid is a ubiquitous phenolic acid present in the plants. This phenolic acid is of low toxicity and can easily be absorbed and metabolized in the human body. Ferulic acid has many physiological functions such as anti-inflammatory, antioxidant, antimicrobial, anti-thrombotic and anti-cancerous activities. In the present study, Ferulic acid was isolated from Michelia champaca extract and quantified through High Performance Liquid Chromatography (HPLC) analysis. Ferulic acid is effective in …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 9, Issue 1, 2019 · pp. 16–23 Read article
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Evaluation of Antioxidant and Cytotoxic activities of Mycelia Biomass and Culture broth of three Edible Mushrooms, Morchella conica, Hericium erinaceus and Pleurotus florida Grown in Submerged Culture
Abstract: Mycelia biomass of three edible mushrooms namely, Morchella conica, Pleurotus florida and Hericium erinaceus were grown as submerged culture in potato dextrose broth supplemented with yeast extract, potassium dihydrogen orthophosphate and magnesium sulphate. The mycelia biomass was extracted with 70% ethanol and culture broth with ethyl acetate. The solvents were evaporated to dryness at low temperature using a rotary vacuum evaporator and the residues thus obtained were used for the …
Published in International Journal of Fungi · Vol. 1, Issue 1, 2024 · pp. 37–50 Read article
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Antioxidant activity of Passiflora foetida leaf extracts and silver nanoparticles in diabetic induced rats
Abstract: The anti-oxidant system present in our body prevents against the free radicals. Anti-oxidants were glutathione peroxidise,serum catalase,vitamin E, ascorbic acid and superoxide. In our study the plant extract of Passiflora foetidae were used to estimate the antioxidant levels in diet-induced diabetic rats. The mean of glutathione peroxide of normal rats was 92.98±1.65. "The mean of diet-induced diabetic rats was 152.50 ± 1.92*. Diabetic rats treated with sitagliptin and vildagliptin had …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 14, Issue 1, 2024 · pp. 10–16 Read article
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The Therapeutic and Biotechnological Potential of Pogostemon benghalensis – A Comprehensive Review
Abstract: Pogostemon benghalensis is a fragrant perennial shrub belonging to the family Lamiaceae, widely distributed across tropical and subtropical regions of Asia. It has been extensively utilized in traditional and ethnomedicinal systems for the treatment of wounds, skin infections, fever, digestive disorders, inflammation, and respiratory ailments. The plant is also valued for its antiseptic, aphrodisiac, insect-repellent, and veterinary medicinal properties. Its leaves, roots, and essential oil are incorporated into herbal formulations, …
Published in Research & Reviews : Journal of Botany · Vol. 15, Issue 2, 2026 · pp. 55–63 Read article
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Biochemical Assays of Crude and Purified Oxycarotenoid Extracts Isolated from Coriander Leaves and their Effect on Oxidative Stability of Oils by Rancimat Assay
Abstract: Antioxidants are important substances in the fight against the damage done by free radicals that are produced by oxidative stress. Antioxidants are available in various forms as dietary supplements/synthetic forms. Because of their toxicity and side effects, the extensive use of many of these synthetic antioxidants is ruled out. Most nutritionist agrees that, the natural food is the best source of antioxidants. Dietary antioxidants have the ability to scavenge free …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 8, Issue 1, 2018 · pp. 1–10 Read article
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Regional Variation in Amino Acid Composition, Antioxidant and Antimicrobial Activity of Tasar Sericin from North and South Bihar
Abstract: This study investigates geographical differences in biochemical and functional characteristics of sericin obtained from Antheraea mylitta cocoons sourced from two regions of Bihar, India: Bhagalpur (North) and Banka (South). Sericin was isolated via an alkali-assisted autoclaving process. Amino acid profiles were determined using HPLC. Free radical scavenging capacity was measured through DPPH, ABTS, and hydrogen peroxide assays. Antibacterial and antifungal effects were tested against Staphylococcus aureus, Escherichia coli, and Candida …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 16, Issue 2, 2026 Read article
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Regional Variation in Amino Acid Composition, Antioxidant and Antimicrobial Activity of Tasar Sericin from North and South Bihar
Abstract: This study investigates geographical differences in biochemical and functional characteristics of sericin obtained from Antheraea mylitta cocoons sourced from two regions of Bihar, India: Bhagalpur (North) and Banka (South). Sericin was isolated via an alkali-assisted autoclaving process. Amino acid profiles were determined using HPLC. Free radical scavenging capacity was measured through DPPH, ABTS, and hydrogen peroxide assays. Antibacterial and antifungal effects were tested against Staphylococcus aureus, Escherichia coli, and Candida …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 16, Issue 2, 2026 · pp. 1–10 Read article