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Letteratura scientifica selezionata sul tema "Antioxidant"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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Articoli di riviste sul tema "Antioxidant"

Gonokami, Mio, Yoshimasa Yamamoto, Oraphin Chaikumpollert, Yoshito Ohtake, and Seiichi Kawahara. "ANTIOXIDANTS FOR EPDM SEALS EXPOSED TO CHLORINATED TAP WATER." Rubber Chemistry and Technology 87, no. 1 (2014): 1–9. http://dx.doi.org/10.5254/rct.13.87963.

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ABSTRACT A suitable antioxidant for a poly(ethylene-co-propylene-co-5-ethylidene-2-norbornene) (EPDM) seal in tap water applications was determined with respect to volatilization and decomposition of the antioxidants. Seals were prepared by mixing EPDM with 1 phr antioxidant and other ingredients followed by vulcanizing the mixture at 433 K for 20 min. The resulting EPDM seals were immersed into chlorinated water to investigate accelerated degradation. The change in antioxidant content was measured by gas chromatography/mass spectroscopy (GC/MS) and high-performance liquid chromatography (HPLC

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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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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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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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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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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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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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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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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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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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Tesi sul tema "Antioxidant"

Macuchová, Simona. "Studium aktivity enzymových a nízkomolekulárních antioxidačních systémů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-233305.

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Oxidative processes play important role in cell physiology and pathology as well. Balance of these processes is supplied by cooperating antioxidative systems; function of antioxidant defense systems depens on high levels of antioxidants in organism. Presented work is focused on developement and optimization of methods for analysis of important enzyme and non-enzyme antioxidants as well as total antioxidant capacity of selected types of biological material. Extractions and analyses of vitamin E, carotenoids, superoxide dismutase, catalase, peroxidase and lipoxygenase in barley and malt were opt

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Jardini, Fernanda Archilla. "Avaliação da atividade antioxidante da romã (Punica granatum, L.) - participação das frações de ácidos fenólicos no processo de inibição da oxidação." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-30062008-163119/.

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Os antioxidantes de origem natural têm importância na área de alimentos, pois podem representar uma alternativa de substituição aos antioxidantes sintéticos. Os compostos fenólicos, presentes nos vegetais, desempenham importância na inibição da oxidação, A romã (Punica granatum, L.) é rica em compostos fenólicos como as antocianinas, flavonóides e ácidos fenólicos. Avaliou-se a atividade antioxidante da polpa e semente de romãs plantadas no Brasil (Pernambuco), e foi feita a obtenção dos extratos e frações de ácidos fenólicos da fruta, que foram submetidos aos testes de co-oxidação de substrat

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Barošová, Michaela. "Sledování antioxidantů v sušeném ovoci." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216231.

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Presented diploma work is focused on study of antioxidants in different kinds of dried fruits. Analyses of ascorbate, tocopherols, carotenoids and flavonoids were performed using RP-HPLC with spectrophotometric detection. Analysis of dried fruits showed high level of vitamins and phenolocs mainly in berries. High level of carotenoids was observed in dried apricots and plums. Further, antioxidant activity of dried fruit extracts was tested by ABTS method. High antioxidant activity was found mainly in dried apples, cranberries and blueberries. The biological test with yeast Sascharomyces cerevis

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Ferdová, Jitka. "Změny aktivit enzymů v ovoci v průběhu dlouhodobého uchovávání." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-216605.

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This study is focused on study of changes of enzyme and low-molecular weight antioxidants in different fruits during long-term storage. In theoretical part individual low-molecular weight antioxidants and enzymes are described. The main causes of fruit decay and some possibilities of fruit preservation and storage are summarized. As biological material some common fruits were chosen - green and red apples, peaches, plums and white grapes. The fruits were stored in laboratory, cellar, in refrigerator and in freezer. In freezing experiments some ways of fruit preparation and processing were test

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Alves, Adriana Barreto. "Compostos antioxidantes em polpa de tomate : efeito do processamento e da estocagem." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255267.

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Orientador: Neura Bragagnolo Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos Made available in DSpace on 2018-10-03T13:46:21Z (GMT). No. of bitstreams: 1 Alves_AdrianaBarreto_D.pdf: 4493430 bytes, checksum: b528cf0688daea5421cc2af99d689e45 (MD5) Previous issue date: 2009 Resumo: Estudos epidemiológicos têm demonstrado que o consumo de frutas e vegetais tem um efeito benéfico na redução da incidência de várias doenças como o câncer e doenças cardiovasculares. Esse efeito tem sido relacionado com a presença de compostos antioxidantes nesses

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Pires, Manoela Alves. "Avaliação da capacidade antioxidante de extratos comerciais de alecrim e chá verde e sua influência na estabilidade de hambúrguer de frango durante armazenamento congelado." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/74/74132/tde-06102014-110832/.

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A atividade antioxidante de dois extratos comerciais de alecrim e chá verde foi comparada com a atividade do sintético BHA para substituição total do sintético em hambúrguer de frango. A quantificação foi determinada pelos métodos Folin-Ciocalteau, FRAP e DPPH. De acordo com as análises de atividade antioxidante, as dosagens dos extratos naturais foram determinadas, utilizando-se como base o limite de dosagem do BHA (0,01% base gordura) e aplicadas em hambúrgueres de frango: T1: Controle; T2: 0,002% BHA; T3: 0,0038% Chá Verde; T4: 0,001% Chá Verde; T5: 0,048% Alecrim; T6: 0,00186% Alecrim. For

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Vicente, Silvio José Valadão. "Caracterização antioxidante do café (Coffea arabica, L.) e efeitos da sua administração oral em ratos." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/6/6133/tde-10092009-092017/.

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Introdução: Um dos fatores de risco para doenças crônicas não-transmissíveis é o excesso de espécies reativas causado pelo estresse oxidativo. Ácidos fenólicos atuam na defesa contra estas espécies, agindo como antioxidantes e como fatores de transcrição para as enzimas antioxidantes fase II (superóxido dismutase, catalase e glutationa peroxidase). Vários alimentos possuem ácidos fenólicos na composição porém o café se destaca pelo alto conteúdo dos mesmos e por ser consumido mundialmente. Objetivos: a) Comparar a capacidade antioxidante e a estabilidade dos cafés regular e descafeinado ao lon

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Scott, Brigitte Clare. "Analysis of the antioxidant action of potential food antioxidants and therapeutic agents." Thesis, King's College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338445.

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Funari, Cristiano Soleo de [UNESP]. "Estudos químicos e biológicos de espécies do gênero Lippia (Verbenaceae) nativas no Cerrado paulista." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/105823.

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Made available in DSpace on 2014-06-11T19:35:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-07-20Bitstream added on 2014-06-13T19:05:25Z : No. of bitstreams: 1 funari_cs_dr_araiq.pdf: 2600402 bytes, checksum: 4840dd71ba347ae01113e7c55ed07595 (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) A criação de um modelo nacional de saúde pautado nas aptidões e carências brasileiras é tida como fundamental para tornar o acesso à saúde pública mais abrangente e de melhor qualidade. O histórico do

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Giada, Maria de Lourdes Reis. "Avaliação da capacidade antioxidante dos compostos fenólicos do cotilédone da semente de girassol (Helianthus annuus L.) rajada." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/9/9132/tde-22082017-093259/.

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No presente trabalho foi avaliada a capacidade antioxidante in vitro dos extratos do cotilédone da semente de girassol rajada, obtidos por extração seqüencial com solventes de diferentes polaridades, bem como avaliado o potencial antioxidante in vitro do extrato que apresentou maior capacidade in vitro. Todos os parâmetros in vitro (sistema β-caroteno/ácido Iinoléico, métodos FRAP, DPPH, ORAC e Rancimat) indicaram o extrato aquoso (EAq) como o de maior capacidade. Neste extrato, o ácido clorogênico (12,88%) foi identificado como o principal componente dos ácidos fenólicos. Na avaliação da

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Libri sul tema "Antioxidant"

Gupta, Dharmendra K., José M. Palma, and Francisco J. Corpas, eds. Antioxidants and Antioxidant Enzymes in Higher Plants. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75088-0.

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Cirilo, Giuseppe, and Francesca Iemma, eds. Antioxidant Polymers. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118445440.

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Prenzler, Paul D., Danielle Ryan, and Kevin Robards, eds. Handbook of Antioxidant Methodology. Royal Society of Chemistry, 2021. http://dx.doi.org/10.1039/9781839165337.

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Aftab, Tariq, and Khalid Rehman Hakeem, eds. Antioxidant Defense in Plants. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7981-0.

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Shahidi, Fereidoon, and Chi-Tang Ho, eds. Antioxidant Measurement and Applications. American Chemical Society, 2007. http://dx.doi.org/10.1021/bk-2007-0956.

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Jo-Ann, Heslin, ed. The antioxidant vitamin counter. Pocket Books, 1994.

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Skinner, Carrie. Antioxidant supplementation during chemotherapy. NCNM, 2007.

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Meeting, American Chemical Society. Antioxidant measurement and applications. Edited by Shahidi Fereidoon 1951-, Ho Chi-Tang 1944-, and American Chemical Society. Division of Agricultural and Food Chemistry. American Chemical Society, 2007.

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1940-, Chow Ching Kuang, ed. Cellular antioxidant defense mechanisms. C.R.C. Press, 1988.

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1940-, Chow Ching Kuang, ed. Cellular antioxidant defense mechanisms. CRC Press, 1988.

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Capitoli di libri sul tema "Antioxidant"

Izol, Ebubekir, and Ilhami Gulcin. "Natural and Powerful Antioxidant Source Propolis According to in Vitro Analysis Results." In Natural Antioxidants and in Vitro Antioxidant Assays. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053359333.1.

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Antioxidants are leading the way in the prevention of more than 100 diseases. They are divided into synthetic and natural antioxidants. Due to the harmful effects of synthetic antioxidants, studies on natural antioxidants have intensified. Propolis, which has the highest antioxidant properties among bee products, is a source of natural antioxidants. Propolis shows much stronger antioxidant properties than many medicinal aromatic plants and other bee products. Therefore, in this chapter, the antioxidant potential of propolis, which is a natural and powerful antioxidant, is presented with curren

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Bährle-Rapp, Marina. "antioxidant." In Springer Lexikon Kosmetik und Körperpflege. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_707.

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Abrams, David B., J. Rick Turner, Linda C. Baumann, et al. "Antioxidant." In Encyclopedia of Behavioral Medicine. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1005-9_856.

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Nahler, Gerhard. "antioxidant." In Dictionary of Pharmaceutical Medicine. Springer Vienna, 2009. http://dx.doi.org/10.1007/978-3-211-89836-9_75.

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Gooch, Jan W. "Antioxidant." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_708.

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Aldred, Sarah. "Antioxidant." In Encyclopedia of Behavioral Medicine. Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4614-6439-6_856-2.

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Aldred, Sarah. "Antioxidant." In Encyclopedia of Behavioral Medicine. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39903-0_856.

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Gooch, Jan W. "Antioxidant." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13152.

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Sun, Ting, and Joseph R. Powers. "Antioxidants and Antioxidant Activities of Vegetables." In Antioxidant Measurement and Applications. American Chemical Society, 2007. http://dx.doi.org/10.1021/bk-2007-0956.ch012.

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Yapici, Ismail. "Natural Antioxidants." In Natural Antioxidants and in Vitro Antioxidant Assays. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053359333.2.

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Antioxidants are substances that provide protection against oxidants. They prevent the formation of oxidants and the damage they can cause to biomolecules. They extend the shelf life of foods. Antioxidants can be natural or synthetic. Some enzymes, phenolic compounds, flavonoids, carotenoids and some vitamins found in plants, fruits and vegetables are effective natural antioxidant compounds. There are also effective synthetic antioxidants such as BHA, BHT, TBHQ. However, it has been stated that synthetic antioxidants added to foods are harmful and their inclusion in foods is limited. Therefore

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Atti di convegni sul tema "Antioxidant"

MacKenzie, D. Scott. "The Mechanism of Quench Oil Oxidation." In HT 2013, edited by B. Lynn Ferguson. ASM International, 2013. https://doi.org/10.31399/asm.cp.ht2013p0255.

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Abstract The life of quench oil is dependent upon its thermal stability. The thermal stability is a function of the quality of the base oil, the antioxidant package used, and the presence of heat and catalysts. In this paper, the mechanism of quench oil degradation and the function of antioxidants will be explained.

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Shukla, Pavan K., and Michael J. Rubal. "Evaluating Properties of Chemically-Aged High Density Polyethylene Piping Material Used in Nuclear Power Plants." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07779.

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Abstract High Density Polyethylene (HDPE) pipes are increasingly used in safety-related components, such as Essential Service Water (ESW) systems in nuclear power plants (NPPs), including buried sections. However, there are safety concerns with HDPE pipes in safety-related components. Even though there is a general belief that HDPE pipes have service lives of 50 years or more, there is limited evidence supporting this assumed service lifetime and associated performance. The available methods for testing HDPE pipe failures and service lifetime have limitations, as they do not account for both c

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BULHAC, Ion, Anastasia ȘTEFÎRȚĂ, Eduard COROPCEANU, Lilia BRÎNZĂ, and Paulina BOUROȘ. "Coordinative compounds and chemical compositions with antioxidant properties." In International congress "Research-Innovation-Inovative Entreneurship". Ion Creangă Pedagogical State University, 2024. https://doi.org/10.46727/c.13-14-10-2023.p308-314.

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Compușii coordinativi cu activitate biologică și compozițiile chimice cu proprietăți antioxidante sporesc rezistența plantelor la condițiile cu insuficiență de apă prin activarea sistemului de protecție antioxidantă în baza proceselor enzimatice. Plantele pre-tratate cu CCBA și compozițiile chimice cu proprietăți antioxidante manifestă capacitate de protecție antioxidantă asigurată atât prin intensificarea majorată a activității enzimelor antioxidante, cât și prin majorarea în condiții de insuficiență moderată de umiditate a conținutului de antioxidanți non-enzimatici cu masa moleculară mică.

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Hil'sher, M. S., and Anna Vesnina. "ANTIOXIDANT ACTIVITY OF CHLORELLA VULGARIS EXTRACTS." In I International Congress “The Latest Achievements of Medicine, Healthcare, and Health-Saving Technologies”. Kemerovo State University, 2023. http://dx.doi.org/10.21603/-i-ic-141.

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Peng, Han, and Fereidoon Shahidi. "Antioxidant activity of EGC (epigallocatechin) ester derivatives in food and biological model system." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/qchb4629.

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Objective: Antioxidants retard oxidative processes in food and pharmaceuticals as well as in the body. However, potential adverse effects of synthetic antioxidants and insufficient efficacy of current natural/natural-derived antioxidant substitutes necessitate developing novel antioxidants. Thus, EGC, as one of the most widely distributed dietary flavanols, serves as an efficient natural antioxidant with numerous health effects, but it is relatively poorly soluble in lipophilic media. In this study, novel lipophilic EGC derivatives prepared via enzymatic esterification will be evaluated in con

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AMRAN, N. A. "Comparison of antioxidative performance of synthetic and natural-derived antioxidants for oxidative stabilization of biodiesel." In Decarbonization Technology: ICDT2024. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903575-22.

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Abstract. In this work, liquid extracts of banana, mango, and fruit palm peels recovered via supercritical fluid extraction (SFE) were used as natural antioxidants whose antioxidative effectiveness was compared with those of their synthetic antioxidant counterparts namely quercetin, gallic acid, and beta-carotene on improving biodiesel’s resistance to oxidation reaction. Blends of the two antioxidant types were tested in mono (single antioxidant) and binary (mixture of two antioxidants) dosages. The results show that a superior antioxidative effect was manifested by the natural antioxidants ex

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Bayram, Ipek, and Eric Decker. "Determination of Antioxidant Synergism Between Tocopherols and Myricetin in Bulk Oil." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/gxns9591.

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Lipid oxidation is a series of reactions affecting food quality and shelf life since it impacts flavor, color, and nutrition. The food industry utilizes different antioxidants to retard oxidation. Interaction between antioxidants can improve the ability of the industry to protect foods if the antioxidant combination is synergistic. This research aims to determine the conditions where tocopherols and myricetin exhibit synergistic activity in bulk oils. Soybean oil was stripped to remove present endogenous antioxidants to better understand tocopherol-myricetin interaction. The oxidative stabilit

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Živković, Marijana, Irena Novaković, Sandra Šegan, Neda Đorđević, and Dušan Sladić. "STEROIDAL THIOSEMICARBAZONES: DRUG-LIKENESS AND ANTIOXIDANT PROPERTIES." In 3rd International Symposium on Biotechnology. University of Kragujevac, Faculty of Agronomy in Čačak, 2025. https://doi.org/10.46793/sbt30.66mz.

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Thiosemicarbazones (TSCs) are well known for their diverse biological activities and wide-ranging applications. This study assessed the drug- likeness and antioxidant potential of previously synthesized steroidal TSCs with promising cytotoxicity. While all tested androstane TSCs are drug-like, they have poor water solubility, strong plasma protein binding ability, and low blood-brain barrier permeability. Mono-TSCs show better absorption parameters, but bis- TSCs are stronger antioxidants, with compound 4 being 4.5 times more active than ascorbic acid. All tested TSCs could be considered poten

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Zhukovets, T. A., M. А. Khancheuski, I. V. Koktysh, E. I. Kvasyuk, and A. G. Sysa. "ANTIOXIDANT EFFECTS OF EMOXYPINE AS ADJUVANT OF ANTI-CANCER DRUGS." In SAKHAROV READINGS 2021: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2021. http://dx.doi.org/10.46646/sakh-2021-2-52-55.

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Antioxidants are known to minimize oxidative stress by interacting with free radicals produced as a result of cell aerobic reactions. Oxidative stress has long been linked to many diseases, especially tumours. Therefore, antioxidants play a crucial role in the prevention or management of free radical-related diseases. However, most of these antioxidants have anticancer effects only if taken in large doses. Therefore, the combined use of antioxidants with chemotherapeutic agents is an attractive strategy to combat various tumours. This article focuses on the antioxidant effect of emoxypine. The

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Sovrlić, Miroslav, Nedeljko Manojlović, Marijana Kosanić, Aleksandar Kočović, Jovica Tomović, and Perica Vasiljević. "Lichenochemical analysis and in vitro antioxidant activity of extracts and gyrophoric acid from lichen Umbilicaria grisea." In 2nd International Conference on Chemo and Bioinformatics. Institute for Information Technologies, University of Kragujevac, 2023. http://dx.doi.org/10.46793/iccbi23.515s.

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This research investigates the chemical composition, total phenolic and flavonoid content, and antioxidant activity of acetone, methanol, and ethanol extracts of the lichen Umbilicaria grisea, and its major secondary metabolite, gyrophoric acid. The extracts were analyzed using high-performance liquid chromatography (HPLC-UV) and spectrophotometric assays. The results showed significant levels of phenolic compounds and flavonoids, which contribute to the lichen’s antioxidant potential. The antioxidant activity was evaluated using in vitro assays such as DPPH and ABTS radical scavenging activit

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Rapporti di organizzazioni sul tema "Antioxidant"

Paul, Satashree. Oxidative Stress: A Cause of Male Infertility. Science Repository OÜ, 2020. http://dx.doi.org/10.31487/sr.blog.10.

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Watkins, Chris B., Susan Lurie, Amnon Lers, and Patricia L. Conklin. Involvement of Antioxidant Enzymes and Genes in the Resistance Mechanism to Postharvest Superficial Scald Development. United States Department of Agriculture, 2004. http://dx.doi.org/10.32747/2004.7586539.bard.

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The objective of this research project was to evaluate the involvement of antioxidant enzymes and genes in the resistance mechanism to postharvest superficial scald development using two primary systems: 1. Resistant and susceptible progenies of an apple cross between a scald resistant crab apple, ‘White Angel’ and a scald susceptible cultivar, ‘Rome Beauty’; 2. Heat-treatment of ‘Granny Smith’, which is known to reduce scald development in this cultivar. In 2002 we asked for, and received (October 14), permission to revise our initial objectives. The US side decided to expand their results to

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Zhu, Chao-Zhi, Joseph G. Sebranek, and Dong U. Ahn. Antioxidant Peptides in Commercial Dry-Cured Hams. Iowa State University, 2016. http://dx.doi.org/10.31274/ans_air-180814-1388.

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Ananieva, Kalina, Emilia Gesheva, Kiril Mishev, and Marina Stanilova. Antioxidant Capacity of Two Endemic Verbascum Species. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2020. http://dx.doi.org/10.7546/crabs.2020.06.08.

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Kanner, Joseph, Edwin Frankel, Stella Harel, and Bruce German. Grapes, Wines and By-products as Potential Sources of Antioxidants. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7568767.bard.

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Several grape varieties and red wines were found to contain large concentration of phenolic compounds which work as antioxidant in-vitro and in-vivo. Wastes from wine production contain antioxidants in large amounts, between 2-6% on dry material basis. Red wines but also white wines were found to prevent lipid peroxidation of turkey muscle tissues stored at 5oC. The antioxidant reaction of flavonoids found in red wines against lipid peroxidation were found to depend on the structure of the molecule. Red wine flavonoids containing an orthodihydroxy structure around the B ring were found highly

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Cuellar, Jr, and J. P. Fuel Property and Antioxidant Effects on Elastomer Integrity. Defense Technical Information Center, 1988. http://dx.doi.org/10.21236/ada200250.

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Prasad, Kedar. Antioxidant Micronutrients: Therapeutic Counter Measures for Chemical Agents. Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada554277.

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Kumar, A. P. Antioxidant Prophylaxis in the Prevention of Prostatic Epithelial Neoplasia. Defense Technical Information Center, 2009. http://dx.doi.org/10.21236/ada503781.

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Sebranek, Joseph G., Vincent J. H. Sewalt, Kristen L. Robbins, and Terry A. Houser. Antioxidant Effectiveness of Natural Rosemary Extract in Pork Sausage. Iowa State University, 2004. http://dx.doi.org/10.31274/ans_air-180814-955.

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Aleksandrov, A. V., L. N. Shilova, N. V. Aleksandrova, et al. On the antioxidant status in patients with rheumatoid arthritis. FilodirittoEditore, 2018. http://dx.doi.org/10.18411/978-88-85813-04-5-2018-10-413-419.

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