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Registros recuperados: 129
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A comparative study of phytoconstituents and antibacterial activity of in vitro derived materials of four Passiflora species Anais da ABC (AABC)
J. SIMÃO,MARIELA; J.S. BARBOZA,THIAGO; G. VIANNA,MARCELA; GARCIA,RENATA; MANSUR,ELISABETH; P.R. IGNACIO,ANA CLAUDIA; PACHECO,GEORGIA.
Abstract Passiflora species are well known for their common use in popular medicine for the treatment of several diseases, such as insomnia, anxiety, and hysteria, in addition to their anti-inflammatory, antioxidant, analgesic and antibacterial potential. However, few data about the chemical composition and the medicinal potential of in vitro derived materials are available. Therefore, the goal of this work was to compare, for the first time, the phytoconstituents of in vitro derived materials of four Passiflora species, and evaluate the antibacterial potential of their extracts against 20 Gram-positive and negative strains. Chromatographic analysis indicated the presence of saponins in roots extracts from all studied species, whereas leaf extracts...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antibacterial; Chromatography; Flavonoids; Passiflora; Saponins.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602805
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Acetylcholinesterase inhibition, antioxidant and identification of some chemical constituents of Phyllanthus atropurpureus cultivated in Egypt BJPS
Abdallah,Walid Elsayed; Elsayed,Wael Mohamady; Hassan,Rasmia Ali; Nazif,Naglaa Mohammed; Ali,Mohammed Ibrahim; Abdelshafeek,Khaled Abdelhady.
Investigation of the lipid constituents of the aerial parts of Phyllanthus atropurpureus resulted in isolation and identification of the fatty acid mixture which consists of eight acids with linolenic acid as major and the unsaponifiable fraction that contain a series of hydrocabons, sterols, in addition to one triterpene (α-amyrin). The acetone insoluble fraction was found to contain two fatty alcohols and three n-hydrocabons in which the n-eicosane is the most abundant (44.16%). The flavonoidal constituents were isolated from ethyl acetate and butanol fractions which were identified as: luteolin-7-O-glucoside, kaempferol 3-O-(p-coumaroylglucoside), kaempferitrin, luteolin and kaempferol. Evaluation of different extracts as acetylcholinesterase inhibitors...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phyllanthus atropurpureus; Euphorbiaceae; Flavonoids; Acetylcholineesterase inhibitors; Antioxidant.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100575
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Actividad de pal, acumulación de fenoles y flavonoides en el chile CM-334 infectado por Nacobbus aberrans e inoculado en el follaje con Phytophthora capsici. Colegio de Postgraduados
Sandoval Luna, Ruth.
Se evaluó la respuesta del chile (Capsicum annuum) CM-334 infectado con Nacobbus aberrans (Na) y en el follaje inoculado con diferentes tipos de inoculación de Phytophthora capsici. En plantas completas o con el tallo decapitado se inoculo micelio, en el follaje zoosporas asperjadas, por inmersión en una suspensión de zoosporas y también en la raíz. Se tuvieron experimentos con plantas susceptibles (var. Joe E. Parker) y resistentes (CM-334), infectadas o sin infectar con N. aberrans y 21 días posteriores a la inoculación (pi) con el nematodo se inocularon con P. capsici; bajo un diseño completamente al azar en cámaras bioclimáticas. De los 5 a los 30 días pi con el oomiceto (pio) se registró la longitud de necrosis (cm), la colonización de hoja, tallo o...
Palavras-chave: Chile CM-334; Fenoles; Flavonoides; PAL; Micelio; Phytophthora capsici; Follaje; Nacobbus aberrans; Zoosporas; Pepper CM-334; Phenols; Flavonoids; Mycelium; Foliage; Zoospores; Fitopatología; Doctorado.
Ano: 2011 URL: http://hdl.handle.net/10521/612
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An evaluation of antibacterial activities of Psidium guajava (L.) BABT
Sanches,Neviton Rogério; Garcia Cortez,Diógenes Aparício; Schiavini,Michelle Simone; Nakamura,Celso Vataru; Dias Filho,Benedito Prado.
The present study was designated to evaluate the antibacterial activities of aqueous and ethanol:water extracts from leaves, roots and stem bark of Psidium guajava L. The antibacterial activities of the extracts against bacteria were tested by using both microdilution assay. The aqueous extracts of P. guajava leaves, roots and stem bark were active against the gram-positive bacteria Staphylococcus aureus (MICs=500, 125 and 250 µg/ml, respectively) and Bacillus subtilis (MICs=500 µg/ml), and virtually inactive against the gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa (MICs >1000 µg/ml). The ethanol:water extracts showed higher antimicrobial activity as compared to aqueous extracts. Based on this finding, the ethanol:water extract of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Psidium guajava; Antibacterial activities; Flavonoids; Alpha- and beta-amyrin; Beta-sitosterol.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300014
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Analysis and quantification of flavonoidic compounds from Portuguese olive (Olea europeae L.) leaf cultivars IPB - Escola Superior Agrária
Meirinhos, J.; Silva, B.M.; Valentão, P.; Seabra, R.M.; Pereira, J.A.; Dias, A.; Andrade, P.B.; Ferreres, F..
Twenty three samples of 18 Portuguese olive leaf cultivars were analysed by a reversed-phase HPLC/DAD procedure and eight flavonoidic compounds were identified and quantified (luteolin 7,40-O-diglucoside, luteolin 7-O-glucoside, rutin, apigenin 7-O-rutinoside, luteolin 40-O-glucoside, luteolin, apigenin and diosmetin). Luteolin 7,40-O-diglucoside and luteolin 40-O-glucoside were identified by HPLC/DAD/MS/MS – ESI. The studied olive leaf samples showed a common phenolic pattern, in which luteolin 40-O-glucoside was almost always the major compound
Tipo: Article Palavras-chave: Olea europaea L.; Olive leaves; Olive cultivars; HPLC-DAD/MS/MS/ESI; Flavonoids.
Ano: 2005 URL: http://hdl.handle.net/10198/728
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Antibacterial activity of propolis collected in different regions of Brazil J. Venom. Anim. Toxins incl. Trop. Dis.
Gonsales,G. Z.; Orsi,R. O.; Fernandes Júnior,A.; Rodrigues,P.; Funari,S. R. C..
The aim of this study was to investigate the antibacterial activity of propolis samples from Goiás, Paraná and São Paulo States, Brazil, and their flavonoids content. Ethanolic extracts of propolis (EEP) were prepared (30g of propolis in 70% ethanol), and the microorganisms Staphylococcus aureus and Escherichia coli were tested. The methodology employed was agar diffusion using filter paper discs. Ampicillin and tetracycline were used as controls. Antibacterial activity was determined by the reading of inhibition zone diameters (mm) after 24 hours incubation at 37°C. Results demonstrated that EEP inhibited the growth of Staphylococcus aureus but not that of Escherichia coli. Tetracycline and ampicillin showed an efficient action against both bacteria....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Propolis; Antibacterial activity; Flavonoids.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000200009
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Antigenotoxicity and antimutagenicity of ethanolic extracts of Brazilian green propolis and its main botanical source determined by the Allium cepa test system Genet. Mol. Biol.
Roberto,Matheus Mantuanelli; Jamal,Cláudia Masrouah; Malaspina,Osmar; Marin-Morales,Maria Aparecida.
Abstract Brazilian green propolis is a resinous substance prepared by bees from parts of the plant Baccharis dracunculifolia. As it possess several biological properties, this work assessed the cytotoxic/anticytotoxic, genotoxic/antigenotoxic and mutagenic/antimutagenic potential of ethanolic extracts of Brazilian green propolis (EEGP) and of B. dracunculifolia (EEBD), by means of the Allium cepa test system. The effects were evaluated by assessing the chromosomal aberrations (CA) and micronuclei (MN) frequencies on meristematic and F1 generation cells from onion roots. Chemical analyses performed with the extracts showed differences in flavonoid quality and quantity. No genotoxic or mutagenic potential was detected, and both extracts were capable of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chromosomal aberration; Micronucleus; Anticlastogenicity; Protective effects; Flavonoids.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000200257
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Anti-inflammatory activity and identification of the Verbena litoralis Kunth crude extract constituents BJPS
Lima,Rachel de; Brondani,Juliana Calil; Dornelles,Rafaela Castro; Lhamas,Cibele Lima; Faccin,Henrique; Silva,Carine Viana; Dalmora,Sérgio Luiz; Manfron,Melânia Palermo.
Verbena litoralis is a plant popularly known as “gervãozinho-do-campo” in Portuguese. It is traditionally used for stomach, liver and gallbladder problems, and as an anti-inflammatory and anthelmintic. The goal of this study was to determine the chemical composition of the crude extract obtained from the aerial parts of V. litoralis by Ultra High Performance Liquid chromatography coupled with Mass Spectrometry in Tandem (UHPLC-MS/MS); assess the anti-inflammatory activity of ethyl acetate fraction and of crude extract; and verify liver, kidney and pancreas damage. In this study, the chemical composition of the extract was identified via UHPLC/MS/MS, assessing the anti-inflammatory activity of the crude extract and the acetate fraction in an induction model...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Verbena litoralis; UHPLC/MS; Flavonoids; Anti-inflammatory.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100540
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Antioxidant activity and flavonoid content of Clusia fluminensis Planch. & Triana Anais da ABC (AABC)
Silva,Maria Carolina A. da; Paiva,Selma R..
Clusia fluminensis Planch. & Triana (Clusiaceae Lindl.) is a native species found in regions of high luminosity and water restriction. The aim of this study was to evaluate the antioxidant activity of Clusia fluminensis crude extracts through the scavenging of the stable free radical DPPH, and the determination of flavones and flavonols content in these extracts. The fruit acetonic extract showed the lowest EC50 value (2.71 ± 0.34 g extract / g DPPH), the lowest percentage of remaining DPPH at the concentrations of 125 and 250 µg/mL (about 4% in both), and also the greatest percentage of flavones and flavonols (13.93 ± 0.21 %). Statistical analysis suggests a positive correlation between the presence of flavonoids and the antioxidant activity of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aluminum chloride; Clusia fluminensis; DPPH; Flavonoids.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300004
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Antioxidant activity and prevention of pork meat lipid oxidation using traditional Mexican condiments (pasilla dry pepper, achiote, and mole sauce) Ciênc. Tecnol. Aliment.
Alvarez-Parrilla,Emilio; Mercado-Mercado,Gilberto; La Rosa,Laura Alejandra De; Díaz,José Alberto López; Wall-Medrano,Abraham; González-Aguilar,Gustavo Adolfo.
Considering the extensive use of hot peppers and spicy sauces in the Mexican cuisine, in the present paper, three widely consumed Mexican condiments (mole sauce, achiote, and pasilla hot pepper) were analyzed for their total phenols, flavonoids and proanthocyanidins, antioxidant activity, and protective effect against lipid oxidation in chopped pork meat. All samples were extracted first with methanol and then with acetone, and the extracts were compared. Pasilla pepper showed the highest phenolic and flavonoid content in both solvents, followed by mole and achiote. Achiote showed the highest proanthocyanidin concentration. All samples showed high antioxidant activity, and good correlations with phenolic compounds and flavonoids, while no correlation was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hot pepper; Bixa orellana L.; Phenolic compounds; Flavonoids; Proanthocyanidins; TBARS.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000200023
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Antioxidant potential of various solvent extract from Morus alba fruits and its major polyphenols composition Ciência Rural
Kobus-Cisowska,Joanna; Szczepaniak,Oskar; Szymanowska-Powałowska,Daria; Piechocka,Justyna; Szulc,Piotr; Dziedziński,Marcin.
ABSTRACT: Extraction conditions are an important factor in the process of obtaining bioactive compounds from plant matrix. These compounds differ structurally. Structures of phyto-compounds and their interactions with other food ingredient are not fully known, while these two aspects should play a significant role in extrahents choice and determination of extraction process conditions. Mulberry (Morus alba) is a plant growing in Asia, which fruits are rich in bioactive ingredients and high anti-oxidative potential. In our study we analyzed mulberry fruits extracts differing in the extra hent applied: acetone, methanol, ethanol and water. All tested extracts possessed rich polyphenolic composition and radical scavenging ability. The significant differences...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Morus alba; Antioxidants; Phenolic acids; Flavonoids.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100751
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Antiproliferative activity in tumor cell lines, antioxidant capacity and total phenolic, flavonoid and tannin contents of Myrciaria floribunda Anais da ABC (AABC)
TIETBOHL,LUIS A.C.; OLIVEIRA,ADRIANA P.; ESTEVES,RICARDO S.; ALBUQUERQUE,RICARDO D.D.G.; FOLLY,DIOGO; MACHADO,FRANCISCO P.; CORRÊA,ARTHUR L.; SANTOS,MARCELO G.; RUIZ,ANA L.G.; ROCHA,LEANDRO.
ABSTRACT Myrciaria floribunda (H. West ex Willd.) O. Berg, Myrtaceae, is a native plant species of the Atlantic Rain Forest, from north to south of Brazil. The lyophilized ethyl acetate extract from the leaves of M. floribunda was investigated for its antiproliferative activity in tumor cell lines, antioxidant capacity and its total phenolic, flavonoid and tannin contents. Antiproliferative activity was tested in vitro against seven human cancer cells and against immortalized human skin keratinocytes line (HaCat, no cancer cell). Antioxidant activity was determined using 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and oxygen radical absorbing capacity (ORAC) assays and total phenolic, flavonoid and tannin contents were determined by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antiproliferative; Flavonoids; Myrciaria floribunda; Phenols.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301111
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Ascorbic acid and citric flavonoids for broilers under heat stress: effects on performance and meat quality Rev. Bras. Ciênc. Avic.
Peña,JEM; Vieira,SL; López,J; Reis,RN; Barros,R; Furtado,FVF; Silva,PX.
The aim of this study was to evaluate the effects of increasing doses of ascorbic acid (AA) and citric flavonoids (quercetin and rutin) on the performance and meat quality characteristics of broilers submitted to cyclic heat stress. Four-hundred one-day-old female Ross 308 were housed in 40 battery cages a in temperature controlled room. Treatments consisted of 0, 250, 500, and 1000 g/ton on of AA + citric flavonoids. Birds were fed ad libitum until 32 day of age. Beginning on day 14 post-hatch until the end of the experiment, in order to simulate cyclic heat stress, the temperature inside the room was increased to 32°C for 5 hours, and decreased until reaching the comfort temperature corresponding to the age of the animals. Birds were slaughtered at 33...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascorbic acid; Broiler; Heat stress; Flavonoids.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200008
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Ascorbic acid and phenolic contents, antioxidant capacity and flavonoids composition of Brazilian Savannah native fruits Ciênc. Tecnol. Aliment.
ALVES,Aline Medeiros; DIAS,Tiago; HASSIMOTTO,Neuza Mariko Aymoto; NAVES,Maria Margareth Veloso.
Abstract Brazilian Savannah native fruits have been investigated as potential sources of antioxidant substances. Cagaita, cerrado cashew and gabiroba were characterized with regard to the ascorbic acid and phenolic contents, antioxidant capacity and flavonoids composition. Gabiroba presented higher contents of ascorbic acid (61.5 mg.100 g–1), total phenolic compounds (1,222.59 mg GAE.100 g–1), and antioxidant capacity (DPPH, FRAP and ORAC assays) than cagaita and cerrado cashew. The correlation coefficients between total ascorbic acid or total phenolic contents and antioxidant capacity were strong and significant (0.970 ≤ r ≤ 0.998). Quercetin derivatives were found in cagaita (1.94 mg.100 g–1) and myricetin derivatives in cerrado cashew (1.2 mg.100 g–1)....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Eugenia dysenterica DC; Anacardium othonianum Rizz.; Campomanesia adamantium (Cambess.) O. Berg; Flavonoids.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400564
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Avaliação da atividade antimicrobiana de extrato aquoso e etanólico de Acanthospermum australe. Repositório Alice
CASTRO, L. C. de; DALL'AGNOL, R.; ETHUR, E. M.; WEIDLICH, L.; KAUFFMANN, C.; SAUTER, I. P.; MUNIZ, A. W.; LOHMANN, P. M.; BOUCHACOURT, O.; GERMANI, J. C.; VAN DER SAND, S. T..
As plantas medicinais têm sido amplamente empregadas na terapia de diversas patologias, constituindo parte das ferramentas terapêuticas utilizadas no controle das mais variadas moléstias humanas. A atividade antibacteriana dos extratos aquoso e etanólico de Acanthospermum australe (Loefl.) O. Kuntze foi avaliada frente às bactérias Staphylococcus aureus (ATCC 6538P) e Escherichia coli (ATCC 25922), pelo método de difusão em Agar. Foi observada a inibição de crescimento destes microrganismos por ambos os extratos, nas concentrações testadas. Paralelamente, foi realizada a análise fitoquímica dos extratos aquoso e hidroetanólico para a determinação de compostos fenólicos (taninos, flavonoides, ácidos fenólicos e antraquinonas), alcaloides e compostos...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Acanthospermum; Asteraceae; Atividade antimicrobiana; Bactéria; Flavonoides; Taninos; Compostos terpênicos; Antimicrobial activity; Bacteria; Flavonoids; Tannins; Terpene compounds.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/942439
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Avaliação de genótipos, mecanismos e o papel dos flavonóides na característica de resistência de soja. Repositório Alice
HOFFMANN-CAMPO, C. B.; PIUBELLI, G. C.; OLIVEIRA, L. J.; TOLEDO, A. M.; MENDES, A. C. F.; MIYAKUBO, S. H..
Para selecionar genótipos de soja com característica de resistência a insetos, investigando os mecanismos e o papel defensivo das substâncias químicas extraídas desses materiais foram instalados ensaios no campo, casa-de-vegetação e laboratório. Nesses ensaios foi dado ênfase aos flavonóides e suas interações com insetos desfolhadores (Anticarsia gemmatalis), sugadores (Euschistus heros, Nezara viridula e Piezodorus guildinii) e galhadores (Sternechus subsignatus). A PI 227687 juntamente com a 'IAC 100', apresentou características que podem conferir à soja graus variáveis de resistência a A. gemmatalis e P. guildinii. Além disto, essa PI, mostrou-se a melhor fonte de resistência a S. subsignatus. A antibiose e a antixenose apresentadas pelos genótipos tem...
Tipo: Capítulo em livro científico (ALICE) Palavras-chave: Flavonóide; Soja; Soybeans; Flavonoids.
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/465101
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Binding effect of proline-rich-proteins (PRPs) on in vitro antimicrobial activity of the flavonoids BJM
Ansari,Jawaad Ahmed; Naz,Shahina; Tarar,Omer Mukhtar; Siddiqi,Rahmanullah; Haider,Muhammad Samee; Jamil,Khalid.
The interaction of the cyanidin, pelargonidin, catechin, myrecetin and kaempferol with casein and gelatin, as proline rich proteins (PRPs), was studied. The binding constants calculated for both flavonoid-casein and flavonoid-gelatin were fairly large (105–107 M−1) indicating strong interaction. Due to higher proline content in gelatin, the binding constants of flavonoid-gelatin (2.5 × 105–6.2 × 107M−1) were found to be higher than flavonoid-casein (1.2 × 105–5.0 × 107 M−1). All the flavonoids showed significant antibacterial activity against the tested strains. Significant loss in activity was observed due to the complexation with PRPs confirming that binding effectively reduced the concentration of the free flavonoids to be available for antibacterial...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Proline rich proteins; Flavonoids; Catechin; Myrecetin; Kaempferol; Pelargonidin; Cyanidin; Gelatin; Casein; Binding constants.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000100183
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Bioactive compounds and value-added applications of cupuassu (Theobroma grandiflorum Schum.) agroindustrial by-product Ciênc. Tecnol. Aliment.
COSTA,Russany Silva da; SANTOS,Orquídea Vasconcelos dos; LANNES,Suzana Caetano da Silva; CASAZZA,Alessandro Alberto; ALIAKBARIAN,Bahar; PEREGO,Patrizia; RIBEIRO-COSTA,Roseane Maria; CONVERTI,Attilio; SILVA JÚNIOR,José Otávio Carréra.
Abstract Cupuassu is a fruitful species from the Amazon basin with great economical potential, due to the multiple uses of its pulp and seeds in the food and cosmetic industries. This fruit generates large amounts of solid waste, which, despite of its high content of bioactive compounds, is discarded in the environment. Therefore, with the aim of reusing these wastes and adding economic value, we investigated the nutritional potential of the seed by-product resulting from industrial cupuassu oil extraction. The by-product was submitted to green extraction, and its contents of bioactive compounds were quantified by HPLC. The extract had a total polyphenol content (16.9 ± 1.8 mg/gDM) and an antioxidant activity, ABTS + (151.0 ± 5.5 mg/100 g) and DPPH. (85.4...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cupuassu; By-product; Antioxidant activity; Flavonoids; Reuse; Value-added applications.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612020000200401
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Bioactivities of the ethanol extract from Ageratum fastigiatum branches: antioxidant, antinociceptive and anti-inflammatory Anais da ABC (AABC)
DEL-VECHIO-VIEIRA,GLAUCIEMAR; SANTOS,BRUNA C.S.; ALVES,MARIA SILVANA; ARAÚJO,AÍLSON L.A.; YAMAMOTO,CÉLIA H.; PINTO,MÍRIAM A.O.; KAPLAN,MARIA AUXILIADORA C.; SOUSA,ORLANDO V..
ABSTRACT The present study was designed to investigate the antioxidant, antinociceptive and anti-inflammatory activities of the ethanol extract from Ageratum fastigiatum branches. Phytochemical screening and total phenol and flavonoid contents were determined. The antioxidant activity was assessed by 2,2-diphenyl-1-pycrilhydrazin (DPPH) and iron reducing power methods. The antinociceptive effect was evaluated using the acetic acid-induced writhing, formalin, hot plate and tail immersion assays; while the carrageenan-induced paw edema and pleurisy tests were performed to examine the anti-inflammatory activity against acute inflammation. The extract revealed the presence of flavonoids, tannins, coumarins, terpenes, sterols and saponins. Expressive levels of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ageratum fastigiatum; Analgesic; Anti-inflammatory; Antioxidant; Flavonoids; Total phenols.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401471
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(+)-Catechin and (-)-epigallocatechin gallate: are these promising antioxidant therapies for frozen goat semen? Arq. Bras. Med. Vet. Zootec.
Silva,E.C.B.; Arruda,L.C.P.; Vieira,J.I.T.; Soares,P.C.; Guerra,M.M.P..
ABSTRACT The aim of this study was to evaluate the effects of different concentrations of (+)-catechin or (-)-epigallocatechin gallate (EGCG) on goat semen freezability. Poolsof semen were processed (Experiment 1: 0, 15, 25, 50, 75, or 100µM (+)-catechin; Experiment 2: 0, 15, 25, 50, 75, or 100µM EGCG) and frozen. After thawing, the samples were evaluated for kinematics, plasma membrane (PMi) and acrosome integrity, morphology, and oxidative stress, at 0 and 1h. In Experiment 1, at 0h, VSL and VAP were greater (P<0.05) with 15µM than with 50 and 100; WOB was lower (P<0.05) with 100µM than with 0, 15, and 25; and BCF was higher (P<0.05) with 75 and 100µM than with 0. In turn, in Experiment 2, progressive motility was higher (P<0.05) with0 and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidants; Cryopreservation; Flavonoids; Oxidative stress; Semen.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000200521
Registros recuperados: 129
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