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Journal articles on the topic 'Antioxidanți'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Choudhary, BR, SM Haldhar, SK Maheshwari, R. Bhargava, and SK Sharma. "Phytochemicals and antioxidants in watermelon (Citrullus lanatus) genotypes under hot arid region." Indian Journal of Agricultural Sciences 85, no. 3 (2015): 414–17. https://doi.org/10.5281/zenodo.6814806.

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Ten genotypes of red-fleshed watermelon [Citrullus lantus (Thunb.)] were estimated for various health promoting bioactive compounds. The evaluated genotypes showed wide variability in total phenols, total flavonoids, tannin, total carotenoids and lycopene contents. The antioxidant activity was estimated by using in vitro assay of cupric reducing antioxidant capacity (CUPRAC). The significant difference (P=0.05) was observed among evaluated watermelon genotypes for different phytochemicals and antioxidants. The total phenols varied from 16.77 to 21.41 mg/g, total flavoniods 55.60 to 100.93 mg/1

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Vladimir, ȘEPTIȚCHI, LEORDA Ana, and RAISCHI Viorica. "ROLUL STRESULUI OXIDATIV ÎN PATOGENEZA INFERTILITĂȚII AUTOIMUNE LA BĂRBAȚI ȘI UTILIZAREA NUTRIENȚILOR CU PROPRIETĂȚI ANTIOXIDANTE PENTRU ÎMBUNĂTĂȚIREA CALITĂȚII SPERMEI." STUDIA UNIVERSITATIS MOLDAVIAE Științe Reale și ale Naturii, no. 1(141) (2021): 42–49. https://doi.org/10.5281/zenodo.4980225.

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Stresul oxidativ reprezintă un factor cauzal major în disfuncția spermei. Suplimentele care conțin substanțe nutritive pentru îmbunătățirea calității spermei au un efect semnificativ asupra funcției reproductive masculine. Odată cu utilizarea lor, se observă o scădere a deteriorării oxidative a ADN-ului, o îmbunătățire substanțială a parametrilor spermei și a funcției de reproducere în general. Utilizarea suplimentelor nutritive, concomitent cu modificări benefice ale dietei, ale stilului de viață și ale condițiilor de mediu, va permite îmbunătățirea nu doar a par

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Buřičová, L., M. Andjelkovic, A. Čermáková, et al. "Antioxidant capacity and antioxidants of strawberry, blackberry, and raspberry leaves." Czech Journal of Food Sciences 29, No. 2 (2011): 181–89. http://dx.doi.org/10.17221/300/2010-cjfs.

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The total phenolic content (Folin-Ciocalteu method), free radical scavenging ability expressed as DPPH value, ferric reducing antioxidant capacity (FRAP), and oxygen radical absorbance capacity (ORAC) were determined in water extracts of leaves from Rosaceae family plants (Fragaria vesca L., Rubus fructicosus L., and Rubus idaeus L.). The antioxidant capacities of the extracts (in the order of the above mentioned methods) were 73.6&ndash;88.9%, 60.1&ndash;71.4%, 49.7&ndash;78.0% respectively, and 45.3&ndash;66.5% of that of green tea water extract. Further, the presence of 15 c

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Nizori, Addion, Elkanah Jayanti, Surhaini Surhaini, Ika Gusriani, Mursyid Mursyid, and Daniel Tua Purba. "Influence of Fermentation Conditions on The Antioxidant and Physico-Chemical of Arabica Coffee from Kerinci Region of Indonesia." Indonesian Food Science & Technology Journal 5, no. 1 (2021): 34–38. http://dx.doi.org/10.22437/ifstj.v5i1.17383.

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Abstract—Coffee quality can depend on several factors such as the species/varieties cultivated, the processing after the harvesting phase, geographical origin, and climatic factors. Fermentation is one of the post harvest technology that influence coffee chemical and sensory properties. This study was to determine the effect of fermentation time into antioxidant and physicochemical of Arabica coffee from Kerinci region Indonesia. Research design used was randomized complete design with 5 combinations of treatments, which are 12, 20, 28, 36, and 44 hours fermentation with 3 replicates. The resu

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Smajić Bećić, Arnela, Ramzija Cvrk, Amela Kusur, Halid Junuzović, and Tijana Brčina. "Comparative analysis of the antioxidant capacity of some natural and synthetic antioxidants added to palm oil." Technologica acta 15, no. 2 (2023): 19–23. http://dx.doi.org/10.51558/2232-7568.2022.15.2.19.

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Various synthetic and natural antioxidants are used to reduce oxidation and its negative impact on the oil during the food frying process. Considering that some studies show the negative impact of synthetic antioxidants on the health of consumers, natural alternatives are being used more and more. BHA and BHT are synthetic antioxidants that are widely used in the food industryand a large number of natural compounds such as phenols, anthocyanins, flavonoids, vitamins, etc. show antioxidant properties. In this study, the antioxidant capacity of oregano and rosemary essential oil was tested and c

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Rusdi, Moh. "DETERMINATION OF ANTIOXIDANT ACTIVITY SALAK PONDOK (Salacca zalacca) USING DPPH (2,2-difenil-1-pikrilhidrazil) METHODE AS AN ACTIVE INGREDIENT FACIAL MASK PRODUCT." SITAWA : Jurnal Farmasi Sains dan Obat Tradisional 3, no. 2 (2024): 96–105. http://dx.doi.org/10.62018/sitawa.v3i2.92.

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The result phitochemical of Salak Pondok fruit is known to contain alkaloids, flavonoids and saponins. Secondary metabolite comppunds of alkaloids, flavonoids and saponins have pharmacological activity as antioxidans. Antioxidants are compound that protect the body from damage to cells by free radicals. Salak as an active ingredient for making facial mask can be done by firt testing the content of secondary metabolites in the extract. The aim of the research is to test secondary metabolite content, test activity usimg the DPPH methode, and apply it as an active substance in facial mask product

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Sadowska-Bartosz, Izabela, and Grzegorz Bartosz. "Effect of Antioxidants Supplementation on Aging and Longevity." BioMed Research International 2014 (2014): 1–17. http://dx.doi.org/10.1155/2014/404680.

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If aging is due to or contributed by free radical reactions, as postulated by the free radical theory of aging, lifespan of organisms should be extended by administration of exogenous antioxidants. This paper reviews data on model organisms concerning the effects of exogenous antioxidants (antioxidant vitamins, lipoic acid, coenzyme Q, melatonin, resveratrol, curcumin, other polyphenols, and synthetic antioxidants including antioxidant nanoparticles) on the lifespan of model organisms. Mechanisms of effects of antioxidants, often due to indirect antioxidant action or to action not related to t

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Shoker, Roaa M. H., Wasan Hamza Al-Shammery, and S. R. Al-Aidy. "A Review Article: Free Radical and Replacement Synthetic Antioxidant by Natural Antioxidant." Journal for Research in Applied Sciences and Biotechnology 2, no. 2 (2023): 206–11. http://dx.doi.org/10.55544/jrasb.2.2.29.

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Free radical may be responsible of several pathophysiology disease for threatening human life, and they are produced from endogenous and exogenous sources. Using the balanced amount of nutritious diet lead to a good health, may be neutralizing or scavenging free radicals by antioxidants compounds. daily diet have large number of vitamin A, E and C, carotenoids, polyphenols, etc. as natural antioxidants, the main bases of them are fruits, cereals, vegetables, and beverages. Enzymatic and non-enzymatic antioxidant substances are two different kinds that lessen the reactions of free radicals. In

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Pan, F. G., E. Q. Yang, J. Y. Xu, et al. "Review on preparation methods, mechanisms and applications for antioxidant peptides in oil." Grasas y Aceites 73, no. 4 (2022): e478. http://dx.doi.org/10.3989/gya.0560211.

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Natural antioxidants, especially those used in edible oil, are safer compared to chemically synthesized antioxidants. Therefore, research on natural antioxidants has become prevelant. Antioxidant peptides derived from food protein can effectively prevent oil oxidation. Protein hydrolyzation is widely applied for the production of antioxidant peptides in industry, and bioinformatics is employed nowadays to generate the desired peptide sequence. Furthermore, the mechanism of antioxidant peptides in the oil system is still controversial, which limits the further development of antioxidant peptide

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Petrescu, Florian Ion Tiberiu, Relly Victoria Virgil Petrescu, and Eleni Mimi Buzea. "New natural antioxidants." Independent Journal of Management & Production 11, no. 3 (2020): 967. http://dx.doi.org/10.14807/ijmp.v11i3.938.

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Antioxidants are, no doubt, an essential part of an optimal health and even traditional doctors support the importance of an appropriate contribution of antioxidants taken through food. Antioxidants are a category of molecules able to inhibit the oxidation of other molecules. The body distributes various nutrients in the body due to their antioxidant properties and also factory antioxidant enzymes to keep under control the reaction in the chain of free radicals. Some antioxidants are produced by the body, but others don't. In addition, the body's natural ability to produce antioxidants decreas

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Kamaluddin, Irna Diyana Kartika, Pratiwi Trisda Ramadhani, Irmayanti Haidir Bima, Andi Alamanda Irwan, and Rasfayanah F. Matoo. "Comparative Analysis of Antioxidants in Moringa Leaves and Soursop Leaves." Jurnal Biologi Tropis 24, no. 2 (2024): 81–88. http://dx.doi.org/10.29303/jbt.v24i2.6760.

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Antioxidants are chemical compounds that can donate one or more electrons to free radicals, so antioxidants function to neutralize free radicals. Antioxidants delay and inhibit cell damage through their properties that can neutralize free radicals. Several studies have reported that M.oleifera has antioxidant activity to various pharmacological effects such as anti-inflammatory and anti-cancer. Moringa oleifera or better known as Moringa is a plant that is widely used by the community to overcome various disease complaints. In addition to Moringa leaves, Soursop leaves (Annona muricata L) also

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Butterfield, D. Allan, and Jeffrey N. Keller. "Antioxidants and antioxidant treatment in disease." Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease 1822, no. 5 (2012): 615. http://dx.doi.org/10.1016/j.bbadis.2012.02.020.

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Laize, de Melo Barroso Gomes, Santos de Oliveria Lousiane, Bento de Araújo Gomes Nelvana, Gomes Leandro da Silva Ranaíze, and Professor Alexandre Iartelli Orientador:. "VALORIZAÇÃO DA LIGNINA COMO ANTIOXIDANTE." Revistaft 26, no. 117 (2022): 67. https://doi.org/10.5281/zenodo.7395967.

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Extraída como subproduto da produção de celulose, a lignina vem sendo alvo de estudos para diversas aplicações na indústria já que possui um baixo custo e a vantagem de ser biodegradável. Esses fatores chamaram atenção da indústria de borrachas, no qual a lignina kraft pode se tornar uma alternativa renovável agindo na forma de antioxidante na formulação de banda de rodagem para a produção de pneus. Alguns estudos apontam que além das vantagens apresentadas neste trabalho, a m

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Zazuli, Zulfan, Rika Hartati, Cornelia Rosasepti Rowa, Sukmadjaja Asyarie, and Satrialdi. "The Potential Application of Nanocarriers in Delivering Topical Antioxidants." Pharmaceuticals 18, no. 1 (2025): 56. https://doi.org/10.3390/ph18010056.

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The imbalance in the production of reactive oxygen species (ROS) with endogenous antioxidant capacity leads to oxidative stress, which drives many disorders, especially in the skin. In such conditions, supplementing exogenous antioxidants may help the body prevent the negative effect of ROS. However, the skin, as the outermost barrier of the body, provides a perfect barricade, making the antioxidant delivery complicated. Several strategies have been developed to enhance the penetration of antioxidants through the skin, one of which is nanotechnology. This review focuses on utilizing several na

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Carsono, Nono, Sefren Geiner Tumilaar, Dikdik Kurnia, Diding Latipudin, and Mieke Hermiawati Satari. "A Review of Bioactive Compounds and Antioxidant Activity Properties of Piper Species." Molecules 27, no. 19 (2022): 6774. http://dx.doi.org/10.3390/molecules27196774.

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Antioxidants are compounds that are able to inhibit the negative effects that come from free radicals. The phenomenon of imbalanced antioxidant production and the accumulation of free radicals in cells and tissues can cause oxidative stress. Excessive free radicals that enter the body cannot be warded off by endogenous antioxidant compounds so that the required antioxidant compounds can come from the outside, which helps in the performance of endogenous antioxidants. Antioxidants that come from outside consist of synthetic and natural antioxidants; however, synthetic antioxidants are not an op

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Beaulieu, Michaël, Ines Bischofberger, Isabel Lorenz, Lucie Scheelen, and Klaus Fischer. "Reproducing butterflies do not increase intake of antioxidants when they could benefit from them." Biology Letters 12, no. 2 (2016): 20150941. http://dx.doi.org/10.1098/rsbl.2015.0941.

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The significance of dietary antioxidants may be limited by the ability of animals to exploit them. However, past studies have focused on the effects of dietary antioxidants after ‘antioxidant forced-feeding’, and have overlooked spontaneous antioxidant intake. Here, we found that reproducing female Bicyclus anynana butterflies had higher antioxidant defences and enhanced fecundity when forced to consume antioxidants (polyphenols). Interestingly, these positive effects were not constant across the oviposition period. When given the choice between food resources with and without antioxidants, re

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Pokorný, J., Š. Schmidt, and H. T T Nguyen. "Functionality changes of natural antioxidants during food processing and storage." Czech Journal of Food Sciences 22, SI - Chem. Reactions in Foods V (2004): S80—S83. http://dx.doi.org/10.17221/10617-cjfs.

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Food raw materials and products contain inhibitors of oxidation reactions, both in the lipidic phase and the aqueous phase. The most important inhibitors are phenolic antioxidants. During food processing and storage, concentrations of antioxidants in the two phases reach an equilibrium. Phenolics react with lipidic free radicals, being converted into antioxidant free radicals, quinones, polymers and copolymers. Some degradation products possess an antioxidant activity, too. The relative antioxidant activity decreases with decreasing concentration of oxygen in the system and with increasing tem

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Pastor, Rosario, and Josep A. Tur. "Antioxidant Supplementation and Adaptive Response to Training: A Systematic Review." Current Pharmaceutical Design 25, no. 16 (2019): 1889–912. http://dx.doi.org/10.2174/1381612825666190701164923.

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Background: Antioxidant supplementation has become a common practice among athletes to theoretically achieve a reduction in oxidative stress, promote recovery and improve performance. Objective: To assess the effect of antioxidant supplements on exercise. Methods: A systematic literature search was performed up to January 2019 in MEDLINE via EBSCO and Pubmed, and in Web of Sciences based on the following terms: “antioxidants” [Major] AND “exercise” AND “adaptation”; “antioxidant supplement” AND “(exercise or physical activity)” AND “(adaptation or adjustment)” [MesH]. Thirty-six articles were

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Furdak, Paulina, Kacper Kut, Grzegorz Bartosz, and Izabela Sadowska-Bartosz. "Comparison of Various Assays of Antioxidant Activity/Capacity: Limited Significance of Redox Potentials of Oxidants/Indicators." International Journal of Molecular Sciences 26, no. 15 (2025): 7069. https://doi.org/10.3390/ijms26157069.

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Assays of total antioxidant capacity (TAC) of complex materials bring no information on the composition of antioxidants present in a sample. As the thermodynamic condition for a redox reaction is that redox potential of the oxidant must be higher than that of a reductant (antioxidants), it seemed to be of interest whether it is possible to estimate the content of antioxidants of various ranges of redox potentials using a set of assays employing oxidants/indicators of different values of redox potentials. Antioxidant activities of nine antioxidants and TAC of an aqueous garlic extract were esti

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Mamataeva, А. Т., Sh А. Abzhanova, А. N. Aralbaeva, R. S. Utegalieva, G. А. Saginbek, and K. I. Almagambetova. "The use of plants with high antioxidant activity in cooking." Journal of Almaty Technological University, no. 3 (September 24, 2022): 19–25. http://dx.doi.org/10.48184/2304-568x-2022-3-19-25.

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The quality of food has a significant impact on human health and longevity. Antioxidants are found in large quantities in herbaceous plants. Therefore, foods with high antioxidant activity can be considered one aspect of their quality. Antioxidants, in turn, are a form of activity that inhibits the free-radical oxidative processes that occur in living organisms. Consumption of foods high in antioxidants helps maintain normal human health. Antioxidants are used as food supplements or in prepared meals. Therefore, this article discusses the preparation of food using herbs with high antioxidant a

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Siregar, Muhammad Septian Azhar, Eri Bachtiar, Atikah Nurhayati, and Muhammad Wahyudi Lewaru. "Antioxidant Activity of Gamat (Stichopus variegatus) and Milk Sea Cucumbers (Holothuria fuscocinerea) from the Thousand Islands National Park Waters." Journal of Aquaculture and Fish Health 12, no. 3 (2023): 390–404. http://dx.doi.org/10.20473/jafh.v12i3.35007.

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The frequent use of synthetic antioxidant compounds can cause degenerative diseases, especially consumers, so that natural antioxidant compounds are needed to reduce the risk of disease. One of the biotas that may contain potential as natural antioxidants is sea cucumber. Sea cucumbers are marine invertebrates that have therapeutic properties whose bioactive content has the potential as antioxidants. Thus, this study aims to determine the potential of two species of sea cucumber (Stichopus variegatus and Holothuria fuscocinerea) as natural antioxidant candidates as an alternative to synthetic

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Dipak, Sontakke* Vinod Chavare Praful Patil Om lole Dhananjay Popalghat. "A Study on Antioxidant from Natural Origin." International Journal of Scientific Research and Technology 2, no. 5 (2025): 600–613. https://doi.org/10.5281/zenodo.15529360.

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Antioxidants Are The Defense System Of The Body Against The Damage Of Reactive Oxygen Species, Which Is Normally Produced During The Various Physiological Processes In The Body. There Are Various Sources Of These Antioxidants Like Endogenous Antioxidant Present In The Body And Exogenous Food Source. In Recent Decades, Alternate Of Synthetic Food Antioxidants By Natural Ones Has Fostered Interest On Vegetable Sources And The Screening Of Inexpensive Raw Materials Particularly From The Agriculture For Identifying New Antioxidants. Polyphenols Are The Significant Plant Compounds With Antioxidant

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Fujimoto, Taiki, and Hiroaki Gotoh. "Feature Selection for the Interpretation of Antioxidant Mechanisms in Plant Phenolics." Molecules 28, no. 3 (2023): 1454. http://dx.doi.org/10.3390/molecules28031454.

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Antioxidants, represented by plant phenolics, protect living tissues by scavenging reactive oxygen species through diverse reaction mechanisms. Research on antioxidants is often individualized, for example, focusing on the evaluation of their activity against a single reactive oxygen species or examining the antioxidant properties of compounds with similar structures. In this study, multivariate analysis was used to comprehensively examine antioxidant properties. Eighteen features were selected to explain the results of the antioxidant capacity tests. These selected features were then evaluate

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Patil, Kunal, and Vishwajit Nalawade. "A Review on Antioxidant Property of Herbal Tea." International Journal of Research Publication and Reviews 04, no. 01 (2022): 1627–33. http://dx.doi.org/10.55248/gengpi.2023.4146.

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Antioxidants are substances found in the medicinal plants which may have a protective role to play in certain conditions such as heart disease, stroke and some cancers. Polyphenols, which are antioxidant components, can be found in tea extracts. Natural antioxidants have gotten a lot of attention and research since they are effective due to free radical scavenger activity and are thought to be less hazardous than synthetic antioxidants. Tea, along with water, is one of the world's most popular beverages.tea(Camellia sinensis)have clasiifird into green tea,black tea,oolong tea . Spectroscopy is

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Vardanyan, L. R., and S. A. Hayrapetyan. "Antioxidant Properties of Ethyl Acetate Osage Orange Extract (Maclura pomifera)." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 3 (102) (June 2022): 96–109. http://dx.doi.org/10.18698/1812-3368-2022-3-96-109.

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The antioxidant properties of ethyl acetate extracts of fruits, leaves and bark of the Osage orange (Maclura pomifera) tree were studied by a kinetic method using the example of a model reaction of cymene oxidation. The extracts exhibit antioxidant properties. Findings of the research show that fresh orange maclura fruits contain the greatest amount of antioxidants. At a temperature of 348 K, the effective content of antioxidant substances is 1.05 · 10--3 mol/(l · mg). The analysis of the effective content of antioxidants in each extract revealed that it decreases when the extract is stored at

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Munteanu, Irina Georgiana, and Constantin Apetrei. "A Review on Electrochemical Sensors and Biosensors Used in Assessing Antioxidant Activity." Antioxidants 11, no. 3 (2022): 584. http://dx.doi.org/10.3390/antiox11030584.

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Currently, there is growing interest in screening and quantifying antioxidants from biological samples in the quest for natural and effective antioxidants to combat free radical-related pathological complications. Antioxidants play an important role in human health and provide a defense against many diseases. Due to the valuable dietary role of these compounds, the analysis and determination of their amount in food is of particular importance. In recent years, many attempts have been made to provide simple, fast, and economical analytical approaches for the on-site detection and determination

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Wen, Yun-Qi, Chang-Hu Xue, Li-Li Xu, et al. "Application of Plackett–Burman Design in Screening of Natural Antioxidants Suitable for Anchovy Oil." Antioxidants 8, no. 12 (2019): 627. http://dx.doi.org/10.3390/antiox8120627.

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Considering the safety of synthetic antioxidants, more and more natural antioxidants have been developed and utilized in foods. This study aimed to screen out a natural antioxidant combination from many antioxidants, which could significantly affect the oxidation stability of anchovy oil, while Plackett–Burman design (PBD) methodology was employed in this screening. According to the statistical results of this design, sesamol, dihydromyricetin, teapolyphenol, and rosemary acid were four significant parameters on the oxidation stability of anchovy oil. Moreover, dihydromyricetin presented the b

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Apak, Reşat, Shela Gorinstein, Volker Böhm, Karen M. Schaich, Mustafa Özyürek, and Kubilay Güçlü. "Methods of measurement and evaluation of natural antioxidant capacity/activity (IUPAC Technical Report)." Pure and Applied Chemistry 85, no. 5 (2013): 957–98. http://dx.doi.org/10.1351/pac-rep-12-07-15.

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The chemical diversity of natural antioxidants (AOXs) makes it difficult to separate, detect, and quantify individual antioxidants from a complex food/biological matrix. Moreover, the total antioxidant power is often more meaningful to evaluate health beneficial effects because of the cooperative action of individual antioxidant species. Currently, there is no single antioxidant assay for food labeling because of the lack of standard quantification methods. Antioxidant assays may be broadly classified as the electron transfer (ET)- and hydrogen atom transfer (HAT)-based assays. The results obt

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Abeyrathne, Edirisinghe Dewage Nalaka Sandun, Kichang Nam, Xi Huang, and Dong Uk Ahn. "Plant- and Animal-Based Antioxidants’ Structure, Efficacy, Mechanisms, and Applications: A Review." Antioxidants 11, no. 5 (2022): 1025. http://dx.doi.org/10.3390/antiox11051025.

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Antioxidants are compounds that normally prevent lipid and protein oxidation. They play a major role in preventing many adverse conditions in the human body, including inflammation and cancer. Synthetic antioxidants are widely used in the food industry to prevent the production of adverse compounds that harm humans. However, plant- and animal-based antioxidants are more appealing to consumers than synthetic antioxidants. Plant-based antioxidants are mainly phenolic compounds, carotenoids, and vitamins, while animal-based antioxidants are mainly whole protein or the peptides of meat, fish, egg,

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Liu, Jie, Yu-Ting Zhao, Wen-Chien Lu, Ping-Hsiu Huang, Tuzz-Ying Song, and Po-Hsien Li. "Bioactive Compounds in Malanto (Kalimeris indica) Leaves and Their Antioxidant Characteristics." Agriculture 13, no. 1 (2023): 211. http://dx.doi.org/10.3390/agriculture13010211.

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Currently, there is an increasing trend to replace artificial antioxidants with natural antioxidants. However, certain naturally occurring antioxidants have lower antioxidant activities than artificial antioxidants. Therefore, they will not be as effective in preventing cellular damage. Nevertheless, if they are controlled, natural antioxidants represent a valuable alternative to synthetic antioxidants. With regard to current knowledge, new applications of natural antioxidants in the food industry include food additives, feedstuffs, food packaging materials, and nutraceuticals. The younger lea

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Meda, Srikala, Sharda Singh, Philip Palade, Sahil Tonk, and Sanjay Awasthi. "Oxidative stress in intensive care unit patients: a review of glutathione linked metabolism and lipid peroxidation." Southwest Respiratory and Critical Care Chronicles 7, no. 27 (2019): 7–35. http://dx.doi.org/10.12746/swrccc.v7i27.511.

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Despite clear evidence of increased oxidative stress in the blood and tissues of critically ill intensive care unit patients, consistent beneficial effects of many different antioxidants have not been observed, and antioxidant therapy has not yet translated into widely accepted clinical practice. The reasons for this are unclear, likely rooted in the complex and context dependent free radical behavior of antioxidants interacting with the process of lipid peroxidation. Control of lipid peroxidation is a crucial requirement for the beneficial effects of antioxidants, but the interactions of biol

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Sekti, Beta Herilla. "TEST OF ANTIOXIDANT CONTENT IN BLUE LOTUS (Nymphaea Stellata Wild) LEAVES WITH DPPH METHOD (1,1-Diphenyl-2-Picrylhydrazyl)." Jurnal Jamu Kusuma 1, no. 2 (2021): 46–50. http://dx.doi.org/10.37341/jurnaljamukusuma.v1i2.10.

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Antioxidants are compounds materials that can inhibit the rate of oxidation of other molecules or neutralize free radicals. Antioxidants can be obtained in synthetic or natural forms. Natural antioxidants can protect the human body from damage to active oxygen which can inhibit degenerative diseases and inhibit the production of fat and food. Natural antioxidants can be obtained from plants, one of which is the Blue Lotus Plant (Nymphaea Stellata Wild). To ensure the presence of antioxidants in this plant, the antioxidant activity was tested using the DPPH method. The DPPH method was used to d

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Taufiq, Nuramaniyah, and Sulfiani Sulfiani. "Antioxidant Activity of Ethanol and n-hexane Extracts of Javanese Bark (Lannea coromandelica) Using the DPPH Method." Indo. J. Chem. Res. 11, no. 1 (2023): 43–48. http://dx.doi.org/10.30598//ijcr.2023.11-tau.

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Javanese bark (Lannea coromandelica) contains secondary metabolites of saponins, tannins, phenolics, and flavonoids. Flavonoids include aromatic compounds that are antioxidants. Antioxidants can inhibit the oxidation process that arises due to free radical reactions to form unreactive compounds. The active flavonoid compounds in counteracting free radicals are determined by the presence of the –OH (hydroxy) functional group. Flavonoid compounds that have antioxidant properties include catechins, flavones, flavanones, flavonols, chalcones, and isoflavones. This study aims to determine the antio

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Feng, Pengmian, and Lijing Feng. "Recent Advances on Antioxidant Identification Based on Machine Learning Methods." Current Drug Metabolism 21, no. 10 (2020): 804–9. http://dx.doi.org/10.2174/1389200221666200719001449.

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Antioxidants are molecules that can prevent damages to cells caused by free radicals. Recent studies also demonstrated that antioxidants play roles in preventing diseases. However, the number of known molecules with antioxidant activity is very small. Therefore, it is necessary to identify antioxidants from various resources. In the past several years, a series of computational methods have been proposed to identify antioxidants. In this review, we briefly summarized recent advances in computationally identifying antioxidants. The challenges and future perspectives for identifying antioxidants

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Chandra, Gorre Vijaya, Lakshmi Bavisetti, and V. D. N. Kumar Abbaraju. "Migration of Leachables Amount of Antioxidants and Vulcanizers: Analytical Method Development and Validation for Antineoplastic Drug Injection by HPLC." International Journal of Drug Delivery Technology 15, no. 02 (2025): 01–09. https://doi.org/10.25258/ijddt.15.2.38.

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An HPLC method for the analysis of leachables amounts of Antioxidants and vulcanizers was developed and validated. The method was developed and validated for quantitation on six targeted Antioxidants and vulcanizers in rubber stoppers of antineoplastic Drug Injection. Methods: The analytical method used to determine the leachableamount of antioxidants (BHT,Antioxidant 1010, Antioxidant 1330, Antioxidant 1076, Antioxidant 168) and vulcanizer(Sulfur) in packaging materials for Melphalan Hydrochloride as Injection 50mg/vial and sterile diluent to Melphalan as Injection 10.00mg/vial by HPLC method

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Rohan Kunder. "Synthesis of Synergist Antioxidant by Greener and Economical Methods." Journal of Information Systems Engineering and Management 10, no. 12s (2025): 391–93. https://doi.org/10.52783/jisem.v10i12s.1823.

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Various types of antioxidants are useful in industries for stabilization of dispersions and other formulations. With the increase in demand for the synthesis of new antioxidants the methods for the synthesis of these antioxidants have also become equally important. The antioxidant Propanoic acid 3-(dodecylthio)-,oxybis (2,1-ethanediyoxy-2,1-ethanediyl) ester is the one which prevents the tanning and decomposition of the latex moreover it acts or enhances the antioxidant properties when combined with other phenolic antioxidant. The economical and cost-effective way of synthesis is mentioned in

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Olesia, Bilous, Sytnik Natalia, Bukhkalo Svitlana, et al. "DEVELOPMENT OF A FOOD ANTIOXIDANT COMPLEX OF PLANT ORIGIN." Eastern-European Journal of Enterprise Technologies 6, no. 11 (102) (2019): 66–73. https://doi.org/10.15587/1729-4061.2019.186442.

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An antioxidant complex has been developed for use in oils, fats, and food products, which must be enriched with biologically active substances of plant origin. Rational conditions have been examined for obtaining of water-ethanol extracts from plant raw materials: oak bark, eucalyptus leaves, and green tea leaves. An antioxidant has been derived capable of preventing the oxidation of fat-containing products, preserving their high nutritional value. The antioxidant substances of natural origin will make it possible to create products, balanced in composition, with prolonged shelf life while pre

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M., Nazirah, Evangeline Yvonne S., A. M. Mohd Hafiz, and S. Mohd Sani. "A review of antioxidant potential from seaweeds - extraction, characterization, benefits and applications." Food Research 6, Supplementary 4 (2023): 58–64. http://dx.doi.org/10.26656/fr.2017.6(s4).008.

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Potential natural antioxidant from seaweeds is used to improve the oxidative stability of food. It also functions as an active ingredient. There are three classes of antioxidants consisting of vitamins, carotenoids and polyphenols. Researchers employ a variety of ways to evaluate antioxidant activity, including screening approaches and chemical composition. Solid-liquid extraction pressured liquid extraction, supercritical fluid extraction, and other green extraction techniques are among the seaweed antioxidant extraction methods commonly utilized and reviewed in this article. The aim of the r

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Hassan Darwish, Hassan Darwish, Evan Brewer, et al. "Comparative antioxidant analysis using the iodine clock reaction: A kinetic approach." World Journal of Advanced Research and Reviews 25, no. 3 (2025): 406–10. https://doi.org/10.30574/wjarr.2025.25.3.0725.

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Aim: This study aims to evaluate the antioxidant capacity of black tea, turmeric, melatonin, and chamomile/lavender tea using the iodine clock reaction, a kinetic method for assessing antioxidant activity. Background: Oxidative stress, caused by an imbalance between free radicals and antioxidants, contributes to chronic diseases, including cardiovascular diseases and neurodegenerative disorders. Antioxidants play a crucial role in mitigating oxidative damage. Methods: The iodine clock reaction was utilized to assess antioxidant activity by measuring the delay in the oxidation process. Reaction

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Delgado-Alfaro, Rogelio A., and Zeferino Gómez-Sandoval. "How Sn(IV) Influences on the Reaction Mechanism of 11, tri-Butyl p-Coumarate and Its tri-Butyl-tin p-Coumarate Considering the Solvent Effect: A DFT Level Study." Computation 11, no. 11 (2023): 220. http://dx.doi.org/10.3390/computation11110220.

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Antioxidants are molecules that neutralize free radicals. In general, the reaction mechanisms of antioxidants are well known. The main reaction mechanisms of antioxidants are electron transfer (ET), hydrogen transfer (HT), and radical adduction formation (RAF). The study of these mechanisms is helpful in understanding how antioxidants control high free radical levels in the cell. There are many studies focused on determining the main mechanism of an antioxidant to neutralize a wide spectrum of radicals, mainly reactive oxygen species (ROS)-type radicals. Most of these antioxidants are polyphen

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Sagar, Appasaheb Sangle, and Anuj Bhadauriya Dr. "Significance of Antioxidant Potential of Plants and its Relevance to Therapeutic Applications." International Journal of Advance Research in Multidisciplinary 1, no. 1 (2023): 914–17. https://doi.org/10.5281/zenodo.14823339.

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Oxidative stress has been identified as the root cause of the development and progression of several diseases. Supplementation of exogenous antioxidants or boosting endogenous antioxidant defenses of the body is a promising way of combating the undesirable effects of reactive oxygen species (ROS) induced oxidative damage. Plants have an innate ability to biosynthesize a wide range of non-enzymatic antioxidants capable of attenuating ROS- induced oxidative damage. Several <em>in vitro</em> methods have been used to screen plants for their antioxidant potential, and in most of these assays they

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Iwit, Seswita, Ardi, and Auzar Syarif. "Activity Uji Aktivitas Antioksidan dan Kandungan Fitokimia Daun Benalu (Loranthus ferrugineus Roxb.) yang Tumbuh pada Ketinggian Tempat dan Inang Berbeda." KOVALEN: Jurnal Riset Kimia 10, no. 2 (2024): 135–46. http://dx.doi.org/10.22487/kovalen.2024.v10.i2.17288.

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Restrictions on synthetic antioxidants in several countries have caused the global community to switch to using natural antioxidants. One source of natural antioxidants is mistletoe leaves (Loranthus ferrugineus Roxb.).The presence of mistletoe in a place and host is an important aspect to pay attention to to get the best antioxidants. This research aims to determine the effect of different altitudes and host types on the antioxidant activity and phytochemical content of mistletoe leaves. This research was structured in a split-plot design with 2 factors, namely altitude (lowland and medium la

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Nikitina, O. A., M. A. Darenskaya, N. V. Semenova, and L. I. Kolesnikova. "Antioxidant defense system: regulation of metabolic processes, genetic determinants, methods of determination." Сибирский научный медицинский журнал 42, no. 3 (2022): 4–17. http://dx.doi.org/10.18699/ssmj20220301.

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An increase in peroxidation activity is considered as a nonspecific process characteristic of the pathogenesis of various diseases accompanied by antioxidant deficiency. As bioregulators that can increase defense, antioxidants are important links in a multi-stage system of regulation and coordination of various body functions. The structure and function of enzymes involved in the regulation of oxidative stress can be significantly affected by genetic polymorphism. To date, the role of genes encoding the activity of enzymes of the antioxidant system in the pathogenesis of many diseases remains

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Nelson, Ashlianne, Arvind Babu Rajendra Santosh, and Thaon Jones. "Review of salivary antioxidants and their barriers." Dental Journal 57, no. 2 (2024): 74–79. http://dx.doi.org/10.20473/j.djmkg.v57.i2.p74-79.

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Background: Oxidative stress results from the imbalance between reactive oxygen species (ROS) and cellular antioxidant defenses. Oxidative stress can cause damage to cellular structures such as cell membranes, lipids, proteins, lipoproteins, and deoxyribonucleic acids when free radicals are present in excess. Antioxidant mechanisms protect tissues against oxidative stress by decreasing free radical levels in cells through the inhibition of activities or expression of free radical-generating enzymes. Purpose: The purpose of this paper is to discuss the role of antioxidants in protecting cells f

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Karlsen, Anette, Mette Svendsen, Ingebjørg Seljeflot, et al. "Compliance, tolerability and safety of two antioxidant-rich diets: a randomised controlled trial in male smokers." British Journal of Nutrition 106, no. 4 (2011): 557–71. http://dx.doi.org/10.1017/s0007114511000353.

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It has been suggested that antioxidants attenuate oxidative stress and prevent oxidative stress-related diseases. Paradoxically, randomised controlled trials (RCT) using pharmacological doses of antioxidant supplements have demonstrated harmful effects in smokers. The aim of the present study was to test the compliance, tolerability and safety of two food-based antioxidant-rich diets in smokers. One of the diets provided antioxidants at levels similar to that used in RCT using supplements which previously have generated harmful effects. The present study followed a randomised, parallel-arm die

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Fragou, Fotini, Annita Theofanous, Yiannis Deligiannakis, and Maria Louloudi. "Nanoantioxidant Materials: Nanoengineering Inspired by Nature." Micromachines 14, no. 2 (2023): 383. http://dx.doi.org/10.3390/mi14020383.

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Oxidants are very active compounds that can cause damage to biological systems under specific environmental conditions. One effective way to counterbalance these adverse effects is the use of anti-oxidants. At low concentrations, an antioxidant is defined as a compound that can delay, control, or prevent an oxidative process. Antioxidants exist in plants, soil, and minerals; therefore, nature is a rich source of natural antioxidants, such as tocopherols and polyphenols. In nature, antioxidants perform in tandem with their bio-environment, which may tune their activity and protect them from deg

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Bandaru, Aishwarya, and Prasuna Ravi Gyana. "Investigating unexplored cyanobacterium Desmonostoc salinum sp. in mangroves as a novel antioxidant source." Research Journal of Chemistry and Environment 28, no. 9 (2024): 67–76. http://dx.doi.org/10.25303/289rjce067076.

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Antioxidants are essential in the fight against free radicals which are linked to a number of diseases in humans. Synthetic antioxidants are stable and economical, but they come with health hazards. Mangrove cyanobacteria are being studied for their antioxidant properties in an effort to find natural substitutes. Desmonostoc salinum is isolated from industrial and mangrove sites in the study and antioxidant activity is evaluated. When compared to their industrial counterparts, mangrove isolates show better antioxidant qualities including a greater phenolic content and DPPH radical scavenging a

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Huyut, Zübeyir, Şükrü Beydemir, and İlhami Gülçin. "Antioxidant and Antiradical Properties of Selected Flavonoids and Phenolic Compounds." Biochemistry Research International 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/7616791.

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Phenolic compounds and flavonoids are known by their antioxidant properties and one of the most important sources for humans is the diet. Due to the harmful effects of synthetic antioxidants such as BHA and BHT, natural novel antioxidants have become the focus of attention for protecting foods and beverages and reducing oxidative stressin vivo. In the current study, we investigated the total antioxidant, metal chelating, Fe3+and Cu2+reduction, and free radical scavenging activities of some phenolic and flavonoid compounds including malvin, oenin, ID-8, silychristin, callistephin, pelargonin, 3

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Bērziņa, Laima, and Inese Mieriņa. "Vanillic and Meldrum’s Acid Containing Antioxidant." Key Engineering Materials 933 (October 17, 2022): 162–68. http://dx.doi.org/10.4028/p-87z4f8.

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Oxidation is a natural part of the aerobic world. Usually oxidation is suppressed by adding various antioxidants. Although a huge amount of antioxidants is known, studies of more active antioxidants which could be used in smaller amounts are crucial. Previously we have demonstrated arylmethyl Meldrum`s acids as promising free radical scavengers. On the other hand various phenol type compounds represent one of the most diverse group of antioxidants. In this study, two types of antioxidants – 1,3-dicarbonyl and phenol – were combined in a single molecule to study the plausible synergistic effect

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Khalil, Ibrahim, Wageeh A. Yehye, Alaitz Etxabide Etxeberria, et al. "Nanoantioxidants: Recent Trends in Antioxidant Delivery Applications." Antioxidants 9, no. 1 (2019): 24. http://dx.doi.org/10.3390/antiox9010024.

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Antioxidants interact with free radicals, terminating the adverse chain reactions and converting them to harmless products. Antioxidants thus minimize the oxidative stress and play a crucial role in the treatment of free radicals-induced diseases. However, the effectiveness of natural and/or synthetic antioxidants is limited due to their poor absorption, difficulties to cross the cell membranes, and degradation during delivery, hence contributing to their limited bioavailability. To address these issues, antioxidants covalently linked with nanoparticles, entrapped in nanogel, hollow particles,

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