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Journal articles on the topic 'Antiradical'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Sari, Dewi Mustika, Rachmat Kosman, and Rusli Rusli. "Free Antiradical Activity Test of Endophytic Fungi Isolates of Kasumba Turate (Carthamus tinctorius (L) Leaves from Galesong Takalar with KLT-Autography Method." Journal Microbiology Science 4, no. 1 (2024): 99–106. http://dx.doi.org/10.56711/jms.v4i1.1027.

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The kasumba turate plant (Carthamus tinctorius (L.) has the potential as a free antiradical. Free antiradical compounds in kasumba turate plants come from secondary metabolites produced by endophytic compounds known as endophytic fungi. Kasumba turate contains phenolic compounds and carotenoids that have antioxidant activity. This study aims to obtain isolates of endophytic fungi in kasumba turate (Carthamus tinctorius (L.) plants that can act as free antiradicals by KLT-Autography method. Five isolates IFDK 01, IFDK 02, IFDK 03, IFDK 04, and IFDK 05 were obtained. After testing the antioxidan

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2

Kartini, Indriana, Tutik Dwi Wahyuningsih, Adhi Dwi Hatmanto, Vina Aida Roza, and Yehezkiel Steven Kurniawan. "Titanium Dioxide-Curcumin Composite Materials from Aceh Curcuma Natural Source and Their Evaluation as Antiradical Agents Through <i>In Vitro</i> Study." Indonesian Journal of Chemistry 23, no. 5 (2023): 1248. http://dx.doi.org/10.22146/ijc.80766.

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The usage of antiradical agents is pivotal for suppressing the negative effects of free radicals on human health. Curcumin, a well-known natural antiradical agent, suffers from its low stability and high price, thus, limiting its potential in real applications. In this work, we carried out the impregnation of encapsulated curcumin from Aceh curcuma source on commercial titanium dioxide. The isolation of curcumin was performed using a simple maceration method, while the encapsulation process was done employing carboxymethylcellulose and maltodextrin to give ethanol-curcumin and triacetin-curcum

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3

Zykova, Irina Dement'yevna, Aleksandr Alekseyevich Efremov, and Liliya Viktorovna Naimushina. "ANTIRADICAL ACTIVITY OF SEPARATE FRACTIONS OF ESSENTIAL OIL OF ACORUS CALAMUS ROOTS." chemistry of plant raw material, no. 2 (June 10, 2020): 73–78. http://dx.doi.org/10.14258/jcprm.2020026659.

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Essential oil from the roots of calamus marsh (Acorus calamus L) was isolated by the method of exhaustive hydroparodistillation, growing on the Krasnoyarsk territory. Separate fractions of essential oil were obtained depending on the duration of isolation. The component composition of the essential oil, the main components of which are acorenone, butyrate α-terpineol, germacrene B, camphor. The antiradical properties of the essential oil of A. сalamus roots growing in the Siberian region, as well as the antiradical properties of its individual fractions were studied for the first time in order

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4

Karamać, M., A. Buciński, B. Pegg R, and R. Amarowicz. "Antioxidant and antiradical activity of ferulates." Czech Journal of Food Sciences 23, No. 2 (2011): 64–68. http://dx.doi.org/10.17221/3373-cjfs.

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Antioxidant and antiradical activities of ferulates (i.e., ferulic acid, isoferulic acid, coniferyl aldehyde, and methyl ferulate) were investigated using a &beta;-carotene-linoleate model system and a DPPH radical scavenging assay, respectively. Compounds so tested exhibited antioxidant and antiradical properties to varying degrees. Methyl ferulate showed the strongest antioxidant activity, whereas the parent phenolic acid was the most active ferulate to scavenge the DPPH radical (DPPH<sup>&middot;</sup>). Isoferulic acid at concentrations ranging from 10 to 100 nmol/assay

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5

Sabarudin, Ruslin, W. O. S. Zubaydah, A. Sartinah, S. Buton, and Yamin. "Antiradical activity, total phenolic, and total flavonoids extract and fractions of pumpkin (Cucurbita moshata Duch) leaves." Food Research 5, no. 2 (2021): 348–53. http://dx.doi.org/10.26656/fr.2017.5(2).529.

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Pumpkin (Cucurbita moshata Duch) is one of the Cucurbitaceae plants, which traditionally used to treat skin diseases, measles, jaundice, insomnia, cancer and enhances endurance. Therefore, it was necessary to explore the potential of pumpkin leaves as antiradical. This research aim was to examine the antiradical activity and total phenolic and total flavonoids of pumpkin leaves extract and its fractions using the DPPH method and determined the phenolic and flavonoid contents. Pumpkin leave powder was extracted with methanol. Furthermore, water was added into methanol extract, and be partitione

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6

Kaminskiy, Il'ya Petrovich, Yelena Vasil'yevna Yermilova, Tat'yana Vladimirovna Kadyrova, Mariya Sergeyevna Lar'kina, Anton Aleksandrovich D'yakonov, and Mikhail Valer'yevich Belousov. "ANTIRADICAL ACTIVITY OF EXTRACTS FROM SIBERIAN FLORA GENUS CENTAUREA PLANTS." chemistry of plant raw material, no. 4 (December 27, 2019): 173–79. http://dx.doi.org/10.14258/jcprm.2019045409.

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The purpose of this research is to study the antiradical activity of various extracts from the Centaurea scabiosa L. aerial part (wild-growing and cultivated) and Centaurea jacea L. as potential sources of antioxidant herbal remedies. In the study of the antiradical activity of extracts from the aerial part of Centaurea jacea L., Centaurea scabiosa L. wild growing and cultivated, in the reaction with a stable diphenylpicrylhydrazyl radical, it was found that the degree of antiradical activity within each species correlates with the quantitative content of flavonoids. Lower values of th

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7

Polonik, Nikita S., Yuri E. Sabutskii, and Sergey G. Polonik. "Free Radical Scavenging Activity of Synthetic and Naturally Occurring Polyhydroxy-, Aminohydroxynaphthazarins and Related Compounds." Natural Product Communications 13, no. 10 (2018): 1934578X1801301. http://dx.doi.org/10.1177/1934578x1801301021.

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Fifty natural and synthetic hydroxy-, aminohydroxynaphthazarins and related quinones were tested for their antiradical activities using 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) scavenging assay. The main features of structure-antiradical activity relationship of amino- and hydroxyquinones were determined for the first time. It was found that naphthazarins (5,8-dihydroxy-1,4-naphthoquinones) are much more active against ABTS-radical than related 1,4-naphthoquinones and 5-hydroxy-1,4-naphthoquinones. Natural aminonaphthazarins (spinamine E, echinamine A) and polyhydroxylated naph

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8

L. B. IRISKINA ,, SH. А. МUZDYBAYEVA ,, М. К. ZHAMANBAEVA ,, A. SH. BUKUNOVA,, and G. К. DAUMOVA. "STUDYING OF ANTI-RADICAL PROPERTIES OF PHENOLS AND HETEROCYCLIC AMINES." Bulletin of the National Engineering Academy of the Republic of Kazakhstan 3, no. 77 (2020): 119–25. http://dx.doi.org/10.47533/2020.1606-146x.18.

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This work presents the results of studies on the antiradical activity of phenols and heterocyclic amines. The antiradical activity was studied using the reaction of interaction with a stable colored radical by spectrophotometric method. The antiradical activity of natural polyphenol quercetin was studied. The content of quercetin in the dosage form was determined. It was shown that the studied phenols are medium strength inhibitors, and heterocyclic amines exhibit weak inhibitory activity.

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9

Ratkin, Ye V., V. V. Ivanov, A. V. Ratkin, and V. S. Chuchalin. "Antioxidant and antiradical properties of polyphenols in the mechanism hepatoprotective actions of preparations Maackia amurensis." Bulletin of Siberian Medicine 10, no. 5 (2011): 91–94. http://dx.doi.org/10.20538/1682-0363-2011-5-91-94.

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For finding-out of a role antioxidant and antiradical properties of poly-phenols in mechanisms hepatoprotective actions of preparations from Maackia amurensis activity of preparations from ядровой wood (Macsar), an extract of cellular culture Maackia amurensis, stilbens. Antiradical properties of preparations measured on ability to cooperate with difenilpikrilgidrazilom (DPPH). It is established, that for Macsar, PKMA, monomeasured and dimeric Stilbenes is absent correlations between antiradical activity of the given preparations from a polyphenolic complex Mauck Amur in modelling system with

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10

Yamin, Yamin, Ruslin Ruslin, Sabarudin Sabarudin, Nurramadhani A. Sida, Henny Kasmawati, and La Ode Muhammad Diman. "Determination of Antiradical Activity, Total Phenolic, and Total Flavonoid Contents of Extracts and Fractions of Langsat (Lansium domesticum Coor.) Seeds." Borneo Journal of Pharmacy 3, no. 4 (2020): 249–56. http://dx.doi.org/10.33084/bjop.v3i4.1500.

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Lansium domesticum Coor. is a fruit species from the Meliaceae family, which is a tropical plant native to Southeast Asia. Local citizens call it langsat, longkong, or duku and have used it as traditional medicine. The seeds of L. domesticum are used as a fever medicine, its bark is used to treat scorpion sting, and its leaves are used to repel mosquitoes. Because of its various uses, it is necessary to explore the antiradical potential of L. domesticum seeds. This study aims to determine the antiradical potential of L. domesticum seeds extract and fractions by using the 2,2-diphenyl-1-picrylh

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11

Ni, Jiaqi, Lilin Lu, and Yi Liu. "Antiradical and Antioxidative Activity of Azocalix[4]arene Derivatives: Combined Experimental and Theoretical Study." Molecules 24, no. 3 (2019): 485. http://dx.doi.org/10.3390/molecules24030485.

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Developing antioxidants with high efficiency is fundamentally important for the protection of living cells and engineering materials against oxidative damage. In this present study, two azocalix[4]arene derivatives were synthesized via a diazo coupling reaction between calix[4]arene and diazonium salts. Their antiradical and antioxidative performances were evaluated by hydroxyl radical scavenging and pyrogallol autoxidation inhibition experiments. Combined with theoretical studies, the antiradical and antioxidative mechanisms have been explored. The results demonstrated that these two azocalix

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12

Szwejda-Grzybowska, Justyna I., Ryszard Kosson, and Maria Grzegorzewska. "The Effect of Short-term Storage and the Hot Water Treatment of Fresh-Cut Pepper Fruit cv. ‛Blondy F1’ and ‛Yecla F1’ on the Content of Bioactive Compounds and Antioxidant Properties." Journal of Horticultural Research 24, no. 2 (2016): 83–90. http://dx.doi.org/10.1515/johr-2016-0024.

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Abstract The aim of the experiment was to determine the changes in the contents of bioactive compounds and antioxidant/antiradical activity in fresh-cut fruits of sweet pepper cv. ‘Blondy F1’ and ‘Yecla F1’, depending on the postharvest treatment. Treatment with hot water and short-term storage decreased the content of bioactive compounds and antioxidant/antiradical activity of fruit peppers. The treatment with water at 55 °C for 12 sec. of fresh-cut fruits caused lower losses in content of bioactive compounds and antioxidant/antiradical activities than the treatment with water at 45 °C for 10

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13

Safonov, A. A., and I. S. Nosulenko. "Antiradical activity of novel 4-amino-5-(thiophen-2-ylmethyl)-4H-1,2,4-triazole-3-thiol derivatives." Current issues in pharmacy and medicine: science and practice 14, no. 2 (2021): 162–66. http://dx.doi.org/10.14739/2409-2932.2021.2.230129.

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The process of studying free radicals began in the middle of the last century (the free radical theory of aging in 1956). Multiple studies have revealed the effect of free radicals on the cells of the body and the development of various diseases, such as diabetes, autoimmune diseases, diseases of the nervous system, and others. As a result, the term antioxidant has emerged, compounds that reduce and prevent the effects of free radicals. Most of the newly synthesized substances are studied for their antiradical properties. 1,2,4-Triazole derivatives are no exception, which has already proven th

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14

Budikafa, MJ, Rumiyati, S. Riyanto, and A. Rohman. "2,2’-Diphenyl-1-picrylhydrazyl and 2,2′-azinobis-(3-ethyl-benzothiazoline-6-sulfonic acid) scavenging assay of Extract and Fractions of Rambutan (Nephelium Lappaceum L.) Seed." Dhaka University Journal of Pharmaceutical Sciences 18, no. 2 (2019): 145–52. http://dx.doi.org/10.3329/dujps.v18i2.43256.

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This research was intended to evaluate the antiradical activity of extracts and fractions of rambutan seed using 2,2’- diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•+). The powder of rambutan seed was subjected to maceration with methanol. The methanolic extract obtained was then fractionated using petroleum ether (PE), dichloromethane (DCM) and ethyl acetate (EA) to obtain PE, DCM and EA fractions, respectively. The methanol extract and fractions were then assayed for antiradical activities and phenolics and flavonoid contents.The results sh

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15

Legzdiņa, Zane, Evita Straumīte, and Zanda Krūma. "Assessment of Bioactive Compounds in Red Wines Available for Purchase in Latvia." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 76, no. 1 (2022): 131–37. http://dx.doi.org/10.2478/prolas-2022-0020.

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Abstract Moderate consumption of wine is associated with positive health effects. Red wine contains more polyphenolic compounds than white wine, so it is considered healthier. The aim of the study was to determine the concentration of bioactive compounds of red grape and berry wines available for purchase in Latvia. A selection of 15 red grape and berry wines purchased in Latvian supermarkets were analysed. The total phenol concentration was determined using the Folin-Ciocalteu spectrophotometric method with minor modifications. Total flavonoid concentration was determined using the colorimetr

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16

Utami, Wahyu, Muhammad Da’i, Viesa Rahayu, Prihantini Kurnia Sari, Dian Werdhi Kusumanegara, and Anik Rohayati. "Aktivitas Antiradikal Berbagai Fraksi dari Ekstrak Etanol dan Ekstrak Etil Asetat Daun Eugenia uniflora L." Talenta Conference Series: Tropical Medicine (TM) 1, no. 3 (2018): 128–33. http://dx.doi.org/10.32734/tm.v1i3.277.

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Penelitian pendahuluan tentang aktivitas antioksidan ekstrak etanol dan ekstrak etil asetat daun dewandaru (Eugenia uniflora L.) menunjukkan potensi anti radikal bebas yang tinggi dari kedua ekstrak. Oleh karena itu telah dilakukan fraksinasi ekstrak etanol dan ekstrak etil asetat daun dewandaru, serta pengujian aktivitas antiradikal dari masing-masing fraksi. Selain itu, penelitian ini juga bertujuan untuk mengetahui apakah ada korelasi antara kandungan fenol dan flavonoid total dalam berbagai fraksi tersebut dengan aktivitas antiradikalnya. Daun dewandaru diekstraksi dengan kloroform, etil a

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17

Milackova, Ivana, Lucia Kovacikova, Miroslav Veverka, Ján Gallovic, and Milan Stefek. "Screening for antiradical efficiency of 21 semi-synthetic derivatives of quercetin in a DPPH assay." Interdisciplinary Toxicology 6, no. 1 (2013): 13–17. http://dx.doi.org/10.2478/intox-2013-0003.

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Abstract The group of 21 novel semi-synthetic derivatives of quercetin was screened for the antiradical efficiency in a DPPH assay. The initial fast absorbance decrease of DPPH, corresponding to the transfer of the most labile H atoms, was followed by a much slower absorbance decline representing the residual antiradical activity of the antioxidant degradation products. Initial velocity of DPPH decolorization determined for the first 75-s interval was used as a marker of the antiradical activity. Application of the kinetic parameter allowed good discrimination between the polyphenolic compound

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18

Deviani, Vanny, Ari Hardianto, Kindi Farabi, and Tati Herlina. "Flavanones from Erythrina crista-galli Twigs and Their Antioxidant Properties Determined through In Silico and In Vitro Studies." Molecules 27, no. 18 (2022): 6018. http://dx.doi.org/10.3390/molecules27186018.

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Flavonoids are a secondary metabolite group with various bioactivities, such as antioxidants. They are rich in the genus Erythrina, such as Erythrina crista-galli. This research aims to isolate and characterize flavonoids from the twigs of E. crista-galli and determine their antioxidant properties through in silico and in vitro assays. The ethyl acetate extract of E. crista-galli twigs were separated by column chromatography and characterized using spectroscopic methods. Density functional theory (DFT) calculations were performed on the isolated flavonoids and the reference compounds (ascorbic

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19

Ghafoor, Kashif, and Yong Hee Choi. "Optimization of Ultrasound-Assisted Extraction for Antiradical Activities of Peel and Seed Extracts of Campbell Early Grapes." Food Engineering Progress 13, no. 1 (2009): 32–37. http://dx.doi.org/10.13050/foodengprog.2009.13.1.32.

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Central composite design was applied for the ultrasound-assisted extraction from peel and seed of Campbell Early grapes and the extraction processes were optimized for the antiradical activities of the extracts by using response surface methodology. Optimal conditions were 53.45% of ethanol concentration, 45.99°C of extraction temperature and 23.93 min of extraction time for the maximum antiradical activity of grape peel extract (54.98%) and 53.14% of ethanol 56.03°C of temperature and 29.03 min of time for maximum antiradical activity of grape seed extract (90.60%).

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Karaulova, Ekaterina P., Anna I. Chepkasova, Tatiana N. Slutskaya, Lidia V. Shulgina, and Eugeny V. Yakush. "Antiradical effect of low-molecular peptides in extracts and hydrolyzates from tissues of water organisms." Izvestiya TINRO 182, no. 3 (2015): 269–76. http://dx.doi.org/10.26428/1606-9919-2015-182-269-276.

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Molecular-weight composition of peptides in extracts and hydrolyzates from soft tissues of the clams Corbicula japonica and Mercenaria mercenaria and liver of chum salmon is investigated. Antiradical activity is defined for low-molecular peptides, as well as for high-molecular proteins and free amino acids in the extracts. The maximum activity is detected for the extracts of salmon liver; all protein fractions in the water extract of the liver have antiradical activity. Low-molecular peptides and free amino acids have antiradical activity in all samples. The peptides with molecular weight 4.3

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Tajalli, F. "Evaluation of Antiradical Activity Grape Seeds and Olive (Olea europaea) Pits Extracts." Journal of Scientific Research 6, no. 1 (2013): 185–90. http://dx.doi.org/10.3329/jsr.v6i1.16654.

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The antiradical activity of grape seeds and olive pits extracts were investigated. The aim of this study is evaluating the radical scavenging activity of methanol extracts of olive pits and grape seeds and to recover a functional and antiradical compound from olive oil and fruit juices factories waste and also for environmental treatment. The antiradical properties of ripe and unripe olive pits (RIOP and URIOP) and grape seeds (IGS) that are respectively used in Iranian oil industries and fruit juices producers are examined. All seeds and pits extracts showed DPPH radical scavenging activity r

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Zykova, S. S., K. L. Gankova, M. V. Shustov, N. M. Igidov, S. S. Borisevich, and M. G. Ilyina. "Study of Antioxidant Activity and Quantum-chemical Calculations of 2-aminopyrroles." Drug development & registration 11, no. 4 (2022): 27–30. http://dx.doi.org/10.33380/2305-2066-2022-11-4(1)-27-30.

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Introduction. Modern therapy defines oxidative stress as one of the key links in the pathogenesis of different diseases, which makes the search for new low molecular weight antioxidants actual [1]. The widely used methods are imperfect, since they reflects reactivity of the sample under artificial conditions [2–4]. The proposed technique of using the "Ecolum" biosensor makes it possible to preserve the advantages of in vitro methods and improve the accuracy of determination through the use of biological reactions of cells [5, 6].Aim. Studying of the antiradical and antioxidant activity of 2-am

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Belykh, Dmitrii, Lidiya Mazaletskaya, Nataliya Sheludchenko, et al. "Antiradical Activity of Porphyrins with a Diisobornylphenol Fragment at the Macrocycle Periphery." Molecules 23, no. 7 (2018): 1718. http://dx.doi.org/10.3390/molecules23071718.

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This article focuses on the antiradical activity of a number of 2,6-diisobornylphenol-porphyrin conjugates with various spacers between the porphyrin and phenolic fragments in the model reaction of ethylbenzene oxidation initiated by azoisobutyric acid dinitrile. The study has shown that the electronic effects of the groups directly related to the 2,6-diisobornylphenol fragment exert the predominant influence both on the reactivity of the phenolic hydroxyl group in interaction with free radicals and on the antiradical activity of the molecule as a whole. The antiradical activity of the molecul

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Sroka, Zbigniew. "Antioxidative and Antiradical Properties of Plant Phenolics." Zeitschrift für Naturforschung C 60, no. 11-12 (2005): 833–43. http://dx.doi.org/10.1515/znc-2005-11-1204.

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The plant phenolic compounds such as flavonoids, tannins and phenolic acids appeared to be strong antiradical and antioxidant compounds. The number of hydroxy groups and the presence of a 2,3-double bond and orthodiphenolic structure enhance antiradical and antioxidative activity of flavonoids. The glycosylation, blocking the 3-OH group in C-ring, lack of a hydroxy group or the presence of only a methoxy group in B-ring have a decreasing effect on antiradical or antioxidative activity of these compounds. Tannins show strong antioxidative properties. Some tannins in red wine or gallate esters w

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Savel'yeva, Yelena Yevgen'yevna, Yekaterina Ziyadkhanovna Lapkina, Nadezhda Anatol'yevna Bulgakova, Yekaterina Sergeyevna Tyutrina, and Vladimir Ivanovich Kurbatskiy. "A STUDY OF THE ANTIOXIDANT ACTIVITY OF PLANTS OF THE GENUS POTENTILLA L." chemistry of plant raw material, no. 2 (June 10, 2020): 189–96. http://dx.doi.org/10.14258/jcprm.2020027261.

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In this work, a comparative assessment of the antiradical properties of some species of the genus Potentilla L. is carried out to identify the most promising in terms of further study. The aboveground part of P. chrysantha Trevir., P. canescens Bess., P. tergemina Sojak, P. erecta (L.) Raeusch., P. paradoxa Nutt. ex Tott. et Gray, P. approximata Bunge, as well as the aboveground and underground parts of P. anserina L. were used as a research object, collected in the vicinity of Tomsk. The antiradical activity of the extracts of the studied plants was evaluated spectrophotometrically, observing

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Kupaeva, N. V., and E. A. Kotenkova. "Current view on the assessment of antioxidant and antiradical activities: A mini review." IOP Conference Series: Earth and Environmental Science 854, no. 1 (2021): 012048. http://dx.doi.org/10.1088/1755-1315/854/1/012048.

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Abstract The main problems in assessing the antioxidant properties of plant biologically active compounds are discussed in this review. Antioxidant potential should be considered as a combination of antioxidant and antiradical activities, since antiradical activity is part of the antioxidant activity and does not always coincide with antioxidant activity. The mechanisms of action and the existing experimental and computational methods for their evaluation were reviewed. Methods like FRAP, CUPRAC etc. could be used for assessment of antioxidant activity of plant compounds, but it is necessary t

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Dimiņš, Fredijs, Velga Miķelsone, and Miķelis Kaņeps. "Antioxidant Characteristics of Latvian Herbal Tea Types." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences 67, no. 4-5 (2013): 433–36. http://dx.doi.org/10.2478/prolas-2013-0067.

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Abstract The aim of the study was to characterise antioxidative properties and antiradical activity of the herbal tea collection in Latvia. High-pressure liquid chromatography and spectrophotometry methods were used to characterise antioxidant properties of herbal tea. Antiradical activity was determined spectrophotometrically. The antiradical scavenging activity was measured by the DPPH (2,2-diphenyl-1-picrylhydrazyl) reaction. The herbal tea antiradical scavenging activity was estimated as the broken down quantity of DPPH on 100 grams of the herbal tea. Individual polyphenols in the herbal t

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Graur, Ianina, Vasilii Graur, Marina Cadin, et al. "Synthesis and Characterization of Copper(II) and Nickel(II) Complexes with 3-(Morpholin-4-yl)propane-2,3-dione 4-Allylthiosemicarbazone Exploring the Antibacterial, Antifungal and Antiradical Properties." Molecules 29, no. 16 (2024): 3903. http://dx.doi.org/10.3390/molecules29163903.

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The eleven new copper(II) and nickel(II) coordination compounds [Cu(L)Br]2 (1), [Cu(L)Cl] (2), [Cu(L)NO3] (3), [Ni(L)Cl] (4), [Ni(HL)2](NO3)2 (5), and [Cu(A)(L)]NO3, where A is 1,10-phenanthroline (6), 2,2′-bipyridine (7), 3,4-dimethylpyridine (8), 3-methylpyridine (9), pyridine (10) and imidazole (11) were synthesized with 3-(morpholin-4-yl)propane-2,3-dione 4-allylthiosemicarbazone (HL). The new thiosemicarbazone was characterized by NMR and FTIR spectroscopy. All the coordination compounds were characterized by elemental analysis and FTIR spectroscopy. Also, the crystal structures of HL and

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Gulyaev, D. K., and V. D. Belonogova. "Phytochemical Study and Antiradical Activity of Young Raspberry Shoots." Medicina 12, no. 4 (2024): 60–68. http://dx.doi.org/10.29234/2308-9113-2024-12-4-60-68.

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Introduction. Young shoots of raspberry vulgaris contain a variety of biologically active substances with pronounced antiradical activity. The aim: Determination of the content of the main groups of biologically active substances and the antiradical activity of leaves and leafless parts of raspberry shoots. Materials and methods of research. Raw material for the study was harvested on the territory of the Ilyinsky district of the Perm Territory in June 2023. Raw material was collected only from well-developed specimens not damaged by pests. Harvested shoots were air-shade dried. Determination

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ZANTE, Abdoul Aziz, Martin Bienvenu SOMDA, Lassina OUATTARA та ін. "Antiradical and inhibitory activities of hydroethanolic extracts of Phyllanthus amarus and Striga hermonthica on α-amylase". Journal of Drug Delivery and Therapeutics 12, № 3-S (2022): 150–53. http://dx.doi.org/10.22270/jddt.v12i3-s.5517.

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Objective: The aim of this study was to evaluate the antiradical and inhibitory activity of whole plant extracts of Phyllanthus amarus and Striga hermonthica on α-amylase. Methods: The crude 70% (v/v) hydroethanolic extracts obtained were used for the assay of polyphenols, the antiradical test with DPPH, the test for the inhibition of α-amylase with DNS (3,5-dinitrosalicylic). The enzyme extracts were obtained from sorghum malt (Sorghum bicolor). Results: It appears from this study that the extract of P. amarus was richer in polyphenols than the extract of S. hermonthica. Regarding

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Dimiņš, Fredijs, and Ingrīda Augšpole. "Total Phenolic, Antioxidant Activities and Flavonoid Contents of Herbal Syrups." Key Engineering Materials 800 (April 2019): 60–64. http://dx.doi.org/10.4028/www.scientific.net/kem.800.60.

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The aim of the study was to characterize antioxidative properties and antiradical activity of the herbal syrups collection in Latvia. Spectrophotometry was used to characterize antioxidant properties of herbal syrups. Antiradical activity, total phenols and content of flavonoids were determined spectrophotometrically. The antiradical scavenging activity was measured by the DPPH (2.2-diphenyl-1-picrylhydrazyl) reaction. The herbal syrups antiradical scavenging activity was estimated by the amount of DPPH of reagent using in reaction with a sample of vegetable syrup (in percent) and by Trolox eq

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Ditrych, M., E. Kordialik-Bogacka, and A. Czyżowska. "Antiradical and reducing potential of commercial beers." Czech Journal of Food Sciences 33, No. 3 (2016): 261–66. http://dx.doi.org/10.17221/658/2014-cjfs.

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Ting, Patrick L., Lance Lusk, Jay Refling, Susan Kay, and David Ryder. "Identification of Antiradical Hop Compounds." Journal of the American Society of Brewing Chemists 66, no. 2 (2008): 116–26. http://dx.doi.org/10.1094/asbcj-2008-0310-01.

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Vol’eva, V. B., I. S. Belostotskaya, N. L. Komissarova, A. V. Malkova, T. V. Pokholok, and E. Ya Davydov. "Antiradical activity of dioxolane derivatives." Russian Journal of Organic Chemistry 49, no. 3 (2013): 446–49. http://dx.doi.org/10.1134/s1070428013030226.

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SUN, TING, and CHI-TANG HO. "ANTIRADICAL EFFICIENCY OF TEA COMPONENTS." Journal of Food Lipids 8, no. 3 (2001): 231–38. http://dx.doi.org/10.1111/j.1745-4522.2001.tb00198.x.

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Vladimirov, Yu A., �. A. Parfenov, O. M. Epanchintseva, and L. D. Smirnov. "Antiradical activity of coumarin ruductones." Bulletin of Experimental Biology and Medicine 112, no. 5 (1991): 1560–63. http://dx.doi.org/10.1007/bf00840412.

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Andrushchenko, Olena, Olena Vergun, and Dzhamal Rakhmetov. "Antioxidant capacity of Cosmos sulphureus plants grown in the temperate climate." Plant Introduction 93-94 (April 28, 2022): 37–45. http://dx.doi.org/10.46341/pi2021021.

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Cosmos sulphureus is an adventitious species for Europe and Ukraine in particular. It originates from Central and South America, where it grows in tropical and subtropical climates. The climatic conditions of Kyiv are characterized as temperate, with an absolute temperature minimum of –32.2 °C, an absolute maximum of +39.9 °C, and average annual rainfall of 649 mm.Plants were analyzed in the flowering phase, divided into inflorescences, leaves, stems, and roots, dried at +35 °C and then extracted with methanol and water. The determination of the antiradical activity was carried out according t

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Fatrcová-Šramková, Katarína, Ján Brindza, Eva Ivanišová, et al. "Morphological and antiradical characteristics of Rugosa rose (Rosa rugosa Thunb.) fruits canned in different kind of honeys and in beverages prepared from honey." Potravinarstvo Slovak Journal of Food Sciences 13, no. 1 (2019): 497–506. http://dx.doi.org/10.5219/1065.

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The aim of the work was to determined the basic morphological and morphometric traits of rugosa rose (Rosa rugosa Thunb.) and antiradical activity of fruit pulp canned in different kind of honeys and in beverages prepared from honey. In experiments there were used 4 genotypes of roses originated from arboretum Mlyňany (Slovakia). The evaluation of 11 morphometric traits of fruit showed that the average weight of the fresh fruit without pedicle reached up 5.14 – 5.46 g, the weight of pedicle was 0.05 – 0.08 g, weight of pulp and seeds 4.80 – 5.13 g, weight of calyx 0.25 – 0.31 g, length and wid

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Da'i, Muhammad, Didiek Setiawan, and Rosita Melannisa. "Potency of Radical Scavenging Activity and Determination of Total Phenolic Content of Five Ethanolic Extract of Rhizome Zingiberaceae Family." Indonesian Journal of Cancer Chemoprevention 4, no. 1 (2013): 457. http://dx.doi.org/10.14499/indonesianjcanchemoprev4iss1pp457-462.

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Several studies show that some plants and fruits could protect human body from free radical danger exposure. Zingiberaceae family has some chemical substances that have antiradical activity, such as phenolic compound and flavonoid. The aim of this study is to determine the correlation of total phenolic compound towards its antiradical activity. Antiradical activity assay was determined by DPPH method (1,1 difenil-2-pikrilhidrazil). The total phenolic compound is determined by spectrofotometry using Folin-Ciocalteu reagent and counted as GAE (Gallic Acid Equivalent). Based on this study, the to

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Daglia, M., A. Papetti, and G. Gazzani. "Green and roasted coffee antiradical activity stability in chemical systems." Czech Journal of Food Sciences 22, SI - Chem. Reactions in Foods V (2004): S191—S194. http://dx.doi.org/10.17221/10658-cjfs.

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The stability to storage at different temperature and oxygen exposure of green and roasted coffee either as coffee beans or as ground coffee antiradical activity, was evaluated. The results showed that the coffee solution antihydroxyl radical activity was constant, independently from the coffee species, from the roasting process, and moreover from the type of storage conditions, suggesting that temperature and oxygen exposure did not affect this antiradical activity. With regard to antiperoxyl radical activity, all green coffee solutions showed remarkable and stable activity. Conversely, the r

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Goncharuk, E. A., O. L. Saibel, G. P. Zaitsev, and N. V. Zagoskina. "The Elicitor Effect of Yeast Extract on the Accumulation of Phenolic Compounds in Linum grandiflorum Cells Cultured In Vitro and Their Antiradical Activity." Biology Bulletin 49, no. 6 (2022): 620–28. http://dx.doi.org/10.1134/s1062359022060061.

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Abstract This paper examines the elicitor effect of yeast extract (YE) in various concentrations (200–1000 mg/L) on the accumulation of phenolic compounds (PC) in flowering flax (Linum grandiflorum Desf.) cells cultured in vitro and their antiradical activity. It is established that the total PС content and the content of phenylpropanoids increase in the cell culture, especially at high YE concentrations in the medium (500 and 1000 mg/L). The antiradical activity of flax culture extracts remains in most cases at the control level. Therefore, the elicitation of flowering flax in vitro cultures

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Barthélemy, Koffi Attioua. "Comparative physico-chemical study of fermented and unfermented cocoa beans from Côte d'Ivoire." International Journal of Biosciences (IJB) 16, no. 1 (2020): 355–62. https://doi.org/10.12692/ijb/16.1.355-362.

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<em>Theobroma cacao</em> (Cocoa) is a shrub whose cultivation is widespread in some tropical countries. This study on almonds from cocoa was intended to establish their physicochemical characteristics before and after fermentation and to evaluate their antiradical activities. Standard methods for physicochemical dosing, phytomolecule dosing and determination of antiradical activity (DPPH) were used. Results indicate that fermentation increases carbohydrate, total sugars and fiber. On the other hand, the contents of lipids, proteins and phenolic compounds decrease after fermentation. The best a

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Kocira, Anna. "Biostimulants and the antiradical activity of soybean seeds." BIO Web of Conferences 10 (2018): 01008. http://dx.doi.org/10.1051/bioconf/20181001008.

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In recent years, the interest in the application of biostimulants has increased, which positively affect the growth and development of plants and contribute to an increase in the yield and quality of crops. In Poland, the area of soybean cultivation is constantly increasing and thus the improvement of the quality of its seeds seems to be purposeful. In the available literature, there are few reports regarding the effect of biostimulants on the antiradical activity of plants. Therefore, studies on the influence of biostimulants on soybean seed antiradical activity seem to be justified. The stud

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Benyagoub, Elhassan, Nouria Nabbou, Miaad K. Alkhudhairy, and Amal Dine. "IN VITRO EVALUATION OF THE ANTIOXIDANT PROPERTY AND DPPH RADICAL SCAVENGING KINETIC BEHAVIOR OF ALGERIAN QUERCUS ROBUR L. LEAVES’ SELECTIVE EXTRACTS." Indian Drugs 59, no. 11 (2022): 37–45. http://dx.doi.org/10.53879/id.59.11.13218.

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Today, there is a growing demand for natural antioxidants. The unbalanced production and consumption of reactive oxygen species cause many disorders such as cancer, arteriosclerosis, Alzheimer’s disease and aging. For this purpose, the present study was a part of the in vitro evaluation of the antioxidant activity of Quercus robur L. leaves’ selective extracts, namely tannins and saponins groups. The antioxidant activity was evaluated by using two techniques: the DPPH radical scavenging activity method and the ferric reducing antioxidant power method. In addition, a kinetic behavior study of t

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Dağlıoğlu, Yeşim. "Assessing of antiradical and antioxidant activities of -carnitine, L-carnitine, Coenzyme Q10 and Beta Carotene dietary supplements." International Journal of Life Sciences and Biotechnology 8, no. 1 (2025): 45–50. https://doi.org/10.38001/ijlsb.1569828.

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In this study, common tests such as 2,2-diphenyl-l-picrylhydrazyl (DPPH) assay, hydrogen peroxide (H2O2) and superoxide anion (O·̄2 ) radical scavenging activity were exerted to measure the antioxidant activities of L-carnitine, Coenzyme Q10 (Co-Q10) and β-carotene dietary supplements. Antiradical and antioxidant capacities were evaluated comparatively with these tests. The highest free radical scavenging activity was observed in β-carotene (H2O2 73%; O·̄2 69%), while the lowest activity was recorded in L-carnitine (H2O2 59%; O·̄2 67%). The radical scavenging activity of these dietary suppleme

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Alwi, Asma, Ahmad Najib, and Risda Waris. "STUDI KOMPARASI AKTIVITAS ANTIRADIKAL BEBAS ANTARA EKSTRAK METANOL DAUN DAN KULIT KAYU TUMBUHAN KEDONDONG PAGAR (Lannea coromandelica (Houtt.) Merr) DENGAN METODE PEREDAMAN SENYAWA 1,1-DIPHENYL -2-PICRYLHYDRAZIL (DPPH)." Makassar Pharmaceutical Science Journal (MPSJ) 1, no. 1 (2023): 4–12. https://doi.org/10.33096/mpsj.v1i1.16.

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Lannea coromandelica (Houtt.) Merr is one of the plants that hast he potential to have free antiradical activity. The research aimed to compare the free antiradical activity of methanol extract of the bark and leaves of Lannea coromandelica (Houtt.) Merr using the free radical reduction method 1.1 diphenhyl-2-picrylhydrazil (DPPH). The bark nd the leaves extract of the tree were obtained by maceration using methanol. The methanol extract preliminary tests were conducted by TLC using n-hexane: ethyl acetate (9 : 1) and ( 7: 3). The positive results for free antiradical aoctivity marked with pur

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Olena, Andrushchenko, Vergun Olena, and Rakhmetov Dzhamal. "Antioxidant capacity of Cosmos sulphureus plants grown in the temperate climate." Plant Introduction 93-94 (April 28, 2022): 37–45. https://doi.org/10.46341/PI2021021.

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<em>Cosmos sulphureus</em> is an adventitious species for Europe and Ukraine in particular. It originates from Central and South America, where it grows in tropical and subtropical climates. The climatic conditions of Kyiv are characterized as temperate, with an absolute temperature minimum of –32.2 °C, an absolute maximum of +39.9 °C, and average annual rainfall of 649 mm. Plants were analyzed in the flowering phase, divided into inflorescences, leaves, stems, and roots, dried at +35 °C and then extracted with methanol and water. The determination of the

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Zykova, S. S., M. V. Shustov, and V. S. Talismanov. "Evaluation of the Antioxidant Properties and Cytotoxic Activity of 1,3-dioxolane Derivatives Imidazole." Drug development & registration 12, no. 4 (2023): 134–38. http://dx.doi.org/10.33380/2305-2066-2023-12-4(1)-1655.

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Introduction. Modern chemotherapy widely considers the role of antioxidant and pro-oxidant methods in the treatment of oncologic pathologies. The use of agents that cause an increase of ROS is a relevant way to destroy tumors. At the same time, there is evidence of the ability of some antioxidants to lead to the cancer cells apoptosis through the generation of free radical forms of oxygen due to disruption of cellular homeostasis. The combination of the «Ecolum» biosensor using technique, antiradical activity data, and information about the cytotoxicity of compounds used in the study allows us

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Verpakovska, Ilze, Dārta Zelma Skrastiņa, Inese Mieriņa, and Mara Jure. "4-Substituted Coumarin Antioxidants." Key Engineering Materials 800 (April 2019): 30–35. http://dx.doi.org/10.4028/www.scientific.net/kem.800.30.

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Few derivatives of 3-arylmethyl-4-hydroxycoumarin and 4-aryl-3,4-dihydrocoumarin as potential free radical scavengers were synthesized. The antiradical activity of these compounds was measured according to 1,1-diphenyl-2-picrylhidrazyl and galvinoxyl tests. It strongly depends on phenol-type substituent attached to the coumarin skeleton, nevertheless the chromen-2-one scaffold by itself plays an important role for the antiradical activity.

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Ray, Supratim, Chandana Sengupta, and Kunal Roy. "QSAR modeling of antiradical and antioxidant activities of flavonoids using electrotopological state (E-State) atom parameters." Open Chemistry 5, no. 4 (2007): 1094–113. http://dx.doi.org/10.2478/s11532-007-0047-3.

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AbstractIn the present paper QSAR modeling using electrotopological state atom (E-state) parameters has been attempted to determine the antiradical and the antioxidant activities of flavonoids in two model systems reported by Burda et al. (2001). The antiradical property of a methanolic solution of 1, 1-diphenyl-2-picrylhydrazyl (DPPH) and the antioxidant activity of flavonoids in a β-carotenelinoleic acid were the two model systems studied. Different statistical tools used in this communication are stepwise regression analysis, multiple linear regressions with factor analysis as the preproces

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