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324 articles for “antioxidants activity”
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Phytochemical Screening and the Effect of Temperature Treatment on the Extraction Yield of Phenolic Compounds and the Antioxidative Activities of Two Medicinal Species Growing in Algeria: Ammi visnaga and Mentha pulegium
Abstract: The aims of this investigation are the identification of molecules of secondary metabolism and study the impact of two extraction techniques (extraction by boiling water under reflux and maceration in 70% hydroethanolic solution at ambient temperature) on the yield of phenolic compounds and the antioxidative activity on two species widely used in Algeria as medicinal plants; Ammi visnaga and Mentha pulegium. The results show that phytochemical screening indicates the presence …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 5, Issue 3, 2018 · pp. 18–25 Read article
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Nutritional Analysis and Antioxidant Activity of Locally Consumed Selected Fruits and Vegetables in Bangladesh
Abstract: Fruits and vegetables are rich source of antioxidants; they play an essential role in the prevention of different chronic diseases. The present study compared nutritional content, antioxidant activity, and beta carotene content of nine locally consumed fruits and vegetables cultivated in the different local regions of Bangladesh. These fruits and vegetables were locally consumed and usually underutilized instead of their significant nutritional component. On proximate analysis, the present study found …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 10, Issue 3, 2021 · pp. 31–36 Read article
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Determination of Antioxidant Activity of Phenolic Extract of Grapes
Abstract: The grapes were extracted under various conditions using different solvents. The antioxidant activity of solvent extracts was investigated by DPPH radical scavenging method. Ethanol extract exhibited the highest antioxidant activity compared to the other solvents (BuOH, EtOAc, Me2 Cl2 and pet.ether). There was a correlation between antioxidant activity and total phenol content. HPLC analysis of the extracts showed that gallic and cinnamic acid was the major phenolic compounds in grapes. …
Published in Research & Reviews : Journal of Botany · Vol. 7, Issue 2, 2018 · pp. 17–21 Read article
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Improvement of Yield of Bioactive Compounds and Antioxidant Activity of Moringa stenopetala Leaves by Optimizing Ultrasonic-assisted Extraction
Abstract: Ultrasonic-assisted extraction (UAE) parameters were optimized in this study using response surface methodology (RSM) to improve the total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity assessed using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) assays of Moringa stenopetala leaves. According to the results, the optimal UAE parameters were extraction time (26 min), ethanol concentration (68%), and solvent-to-sample ratio (42 mL/g). Based on these optimal parameters, …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 7, Issue 3, 2018 · pp. 1–11 Read article
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In vitro Antioxidant Activity and Phytochemical Analysis of Different Polar Solvent Extracts Obtained from Zanthoxylum rhetsa (Roxb) Bark
Abstract: This study was carried out to evaluate the phytochemical and antioxidant effectiveness of methanolic extract and different fractions (n-butanol, ethyl acetate, chloroform and n-hexane) of Z. rhetsa bark. Phytochemical activity of Zanthoxhylum rhetsa (Roxb) bark extract alkaloids, flavonoids, tannins, steroids, saponins and antraquinones was carried out. Antioxidant scavenging enzyme profile assays were done and profiles were developed for validation. The results indicated that bark extract and fractions of Z. rhetsa …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 5, Issue 3, 2015 · pp. 1–7 Read article
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Lasiosiphon glaucus: Preliminary Phytochemical Screening, Antioxidant Activity and Anti-inflammatory Activity of Ethnomedicinal Plant
Abstract: An important ethnobotanical medicinal plant Lasiosiphon glaucus was evaluated for its antioxidant and anti-inflammatory potentials. The plant showed significant antioxidant activity as evaluated by DPPH free radical scavenging activity (IC50 100 µg/ml) and ABTS radical scavenging activity (IC50 96 µg/ml) and Total antioxidant activity of 33 mg/g ascorbic acid equivalent. The plant has a total phenol content of 8.7 mg/g gallic acid equivalent. It is evident form HRBC membrane destabilisation …
Published in Research & Reviews : Journal of Herbal Science · Vol. 7, Issue 1, 2018 · pp. 1–7 Read article
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Flavonoid Contents and Antioxidant Activity of an Endophytic Bacteria Associated with Medicinal Plant Humulus lupulus
Abstract: Endophytes are symbiotic microorganisms, most often bacteria or fungi, that reside and multiply within plant tissues without inducing visible signs of disease or negatively affecting the host plant. Endophytic bacteria contribute to plant development by stimulating growth, strengthening defence mechanisms, enhancing tolerance to both abiotic and biotic stresses, and facilitating improved nutrient uptake. Endophytic bacteria serve as an important reservoir of bioactive compounds, notably antioxidant molecules, that play a crucial …
Published in Research & Reviews : Journal of Herbal Science · Vol. 14, Issue 3, 2025 · pp. 1–6 Read article
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Comparative Phytochemical Composition and Antioxidant Activities of Mangifera indica and Mucuna urens Seeds
Abstract: ABSTRACTThis study was carried out to evaluate and compare the phytochemical composition and antioxidant activities of Mangifera indica and Mucuna urens seeds, with a view to elucidating the phytochemical basis for their medicinal uses, and their nutraceutical potentials as soup thickeners. Of the two seeds, M. indica had significantly higher (ρ < 0.05) total phenol, tannin, total flavonoid and total saponin contents than M. urens on dry weight basis. Conversely, …
Published in Research & Reviews : Journal of Herbal Science · Vol. 1, Issue 2, 2012 · pp. 15–24 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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Antioxidant Activity in Se-Enriched Edible Mushrooms
Abstract: Mushrooms enriched with essential minerals, such as selenium (Se), are food that compensate for dietary nutrient deficiencies. Extracts from Se-enriched Pleurotusostreatus and Lentinula edodes mushrooms contain active antioxidant compounds, which enhance the immune system. To evaluate whether Se-enrichment changes antioxidant and lipid peroxidation potential, the concentration of total phenolic compounds, antioxidant activity, lipid peroxidation and the total concentration of minerals (Mn, Fe, Cu, Zn, V, Cr, Co, Ni, As, Cd …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 9, Issue 3, 2020 · pp. 28–34 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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Antioxidant Activity of Bacopa monnieri, Tagetes, Withania somnifera and Formulation of Polyherbal Hair Oil
Abstract: The purpose of this research is to evaluate the chromatographic antioxidative activity and thin-layer analysis of medicinal plant leaves. Its antioxidant activities were calculated by calculating its radical scavenging DPPH and radical scavenging ABTS and were obtained in 35.08 per cent, 32.12 per cent, 17.22 per cent, for this research Bacopa monnieri and Withania somnifera. AGAR diffusion assay was used to carry out antibacterial extract activity, and its antibacterial effect …
Published in Research & Reviews : Journal of Herbal Science · Vol. 9, Issue 2, 2020 · pp. 15–19 Read article
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Antimicrobial and Antioxidant Activities of Commercially Available Essential Oils and Their Oleoresins
Abstract: AbstractThe objectives of this study were to evaluate and compare in vitro antibacterial and antioxidant activities of commercially available oregano, rosemary, sage and thyme essential oils (EOs) against their corresponding oleoresins (ORs) for potential application in food packaging systems. Thyme EO showed the best antimicrobial activity against Staphylococcus aureus, Bacillus cereus, Escherichia coli and Pseudomonas fluorescens (MIC values ranging 0.4 ± 0.1 − 8.7 ± 2.3 mg/mL). Overall, the antimicrobial …
Published in Research & Reviews : Journal of Herbal Science · Vol. 3, Issue 3, 2014 · pp. 1–11 Read article
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Antidiabetic and Antioxidant Activity of Leaves of Aegiceras corniculatum (L.) Blanco (Black Mangrove): An in vitro and in vivo Study
Abstract: AbstractPurpose: Aegiceras corniculatum (L.) Blanco, commonly known as Black Mangrove, is a species of shrub or tree mangrove with a distributed Indian mangrove forest and traditionally used to treat diabetes and other health ailments. Aim: The objective of this work was to enlighten the function of Indian mangrove variety of A. corniculatum leaves on carbohydrates blemishing reactions through diabetes using in vitro and in vivo methods. Methods: The aqueous leaves …
Published in Research & Reviews : Journal of Herbal Science · Vol. 7, Issue 1, 2018 · pp. 23–31 Read article
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Antifungal, Antioxidant Activity and Phytochemical Analysis of Extracts from Vitex rivularis (Lamiaceae)
Abstract: The present study was designed to investigate the biological properties of methanolic extracts of leaves and seeds from Vitexrivularis. Leaves and seeds extracts were prepared by maceration in methanol. Phytochemicals analysis was performed by colorimetric method, chemical reaction method and high-performance liquid chromatography (HPLC). The broth microdilution method was used to evaluate the in vitro activity against three strains of Candida albicans and 17 isolates of two yeast species (Candida …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 7, Issue 1, 2020 · pp. 23–48 Read article
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A Comprehensive Review of Antioxidant Activity of Bhringraj (Eclipta alba) : An Indian Ancient Herb
Abstract: Eclipta alba, commonly known as Bhringraj, is an herb widely utilized in traditional Indian medicine (Ayurveda) for its diverse therapeutic properties, particularly in promoting hair growth, enhancing liver function, and improving overall health. Among its numerous biological activities, the plant’s antioxidant potential has garnered significant interest in modern phytochemistry. Oxidative stress, caused by an imbalance between reactive oxygen species (ROS) and the body’s antioxidant defenses, is a key contributor to …
Published in Research and Reviews : A Journal of Ayurvedic Science, Yoga and Naturopathy · Vol. 12, Issue 1, 2025 · pp. 12–21 Read article
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Nitric-oxide Scavenging Antioxidant Activity of the Different Extracts of Plumeria obtusa (Family:Apocynaceae)
Abstract: Plumeria obtusa (Family-Apocynaceae) has a long ethnomedicinal tradition of being used as a remedial agent in various diseases such as diarrhoea, piles, fever, gonorrhoea, antibacterial and antitumour agents etc. Antioxidant potential of the crude petroleum ether, chloroform and methanol extracts of the leaf and bark were evaluated by using nitric oxide scavenging assay. The extracts showed significant activities compared to ascorbic acid in a dose dependent mode. Moreover, the percentage …
Published in Research & Reviews : Journal of Herbal Science · Vol. 4, Issue 1, 2015 · pp. 58–62 Read article
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A Process for Standardization of Ayurvedic Polyherbal Formulation (Churna) for Antioxidant Activity
Abstract: Ayurvedic medicinal preparation as per Ayurveda by using herbal antioxidant ingredients; the name of prepared formulation in Ayurveda is called churna, That churna having antioxidant property known to be effective in all types of allied disorders also, related to oxidation in cellular and molecular level in a living system has been standardized by following modern scientific quality control procedures both for the raw material and finished product. The obtained values …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 5, Issue 2, 2014 · pp. 1–7 Read article
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Evaluation of Antioxidant Activity of Coumarin Isolated from Eupatorium triplinerve
Abstract: Eupatorium triplinerve (Asteraceae) is a slender herb with narrow lanceolate leaves. Extract of the plant is used as antiseptic, and in the treatment of various ulcers and haemorrhages. Ayapana is a rich source of naturally occurring coumarin chemicals. Coumarins are chemical compounds found in many plants and which usually have a sweet scent—much like newly-mown hay. Coumarin has clinical value as the precursor for several anticoagulant drugs; most notably, one …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 1, Issue 1, 2014 · pp. 18–22 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