Consulta: subjectFacets:"TBARS"
Registros recuperados: 28
Data/hora: 16/06/2024 09:06:47

Salinity effects on protein content, lipid peroxidation, pigments, and proline in Paulownia imperialis (Siebold &amp;amp; Zuccarini) and Paulownia fortunei (Seemann &amp;amp; Hemsley) grown in vitro
Provedor de dados: 69
Autores: Ayala-Astorga,Gloria Irma; Alcaraz-Meléndez,Lilia.
We evaluated the effects of saline stress on soluble proteins, lipid peroxidation (TBAR), chlorophyll a, chlorophyll b, &amp;#946;-carotene, violaxanthin, and proline in Paulownia imperialis and Paulownia fortunei plants grown in vitro. When the propagated plants reached a determined size, they were transferred aseptically to WPM culture medium containing different sodium chloride concentrations (0, 20, 40, 60, 80, and 160 mM) and were sampled at 15 and 30 days. Proline content was determined at 30 days after transfer only. Protein concentration significantly decreased with the highest salt levels in P. imperialis compared to controls in which no sodium chloride was added. In both P. imperialis and P. fortunei, lipid peroxidation significantly increased at...
Tipo: Journal article
Palavras-chave: Paulownia fortunei; Paulownia imperialis; Pigments; Proline; Proteins; Salinity; TBARS; Tissue culture.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000500013

Water pH and hardness alter ATPases and oxidative stress in the gills and kidney of pacu ( Piaractus mesopotamicus )
Provedor de dados: 83
Autores: Copatti,Carlos Eduardo; Baldisserotto,Bernardo; Souza,Carine de Freitas; Monserrat,José María; Garcia,Luciano.
ABSTRACT This study aimed to assess the effects of low and high water hardness in interaction with different water pH in pacu (Piaractus mesopotamicus). Pacu juveniles were subjected to low (50 mg CaCO3 L-1 - LWH) or high water hardness (120 mg CaCO3 L-1 - HWH) at water pH of 5.5 (acidic), 7.5 (circumneutral) or 9.0 (alkaline) for 15 days. Gills and kidneys were collected (days 1, 5 and 15). Gill Na+/K+-ATPase (NKA) and vacuolar-type H+-ATPase (V-ATPase) activities were higher in alkaline pH with HWH on day 1. Gill and kidney NKA and V-ATPase activities were higher in acidic pH with LWH on day 15. Gill NKA activity of pacus under alkaline pH with LWH was higher than those exposed to HWH. Reduced antioxidant capacity in the gills and kidney and enhanced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acidic pH; Alkaline pH; GST; Na+/K+-ATPase; TBARS.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000500204

Oxidative stress parameters in juvenile Brazilian flounder Paralichthys orbignyanus (Valenciennes, 1839) (Pleuronectiformes: Paralichthyidae) exposed to cold and heat shocks
Provedor de dados: 83
Autores: Garcia,Luciano de O.; Okamoto,Marcelo H.; Riffel,Ana Paula K.; Saccol,Etiane M.; Pavanato,Maria A.; Sampaio,Luís André N.
The aim of this study was to determine oxidative stress parameters in the liver and gill of Brazilian flounder juveniles (307.0 ± 16.0 g and 30.0 ± 4.0 cm) submitted to different water temperature (17.1, 23.0 and 28.8ºC) for 72 h and maintained at salinity 25‰. After the acclimation of 7 days, in 23ºC, fish were transferred to 200 L tanks containing seawater (salinity 25‰) at 28.8ºC (heat shock), 17.1ºC (cold shock) or 23.0ºC (control), five replicates (five fish tank-1). The sampled collection occurred in 0 (pre-challenge), 3, 24, 48 and 72 h after temperature shock. Flounder exposed to 17.1ºC and 28.8ºC showed significantly higher TBARS levels and GST activity in the liver post-exposition (PE) in relation to the control (23ºC). CAT activity in liver...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catalase; GST; Lipid peroxidation; TBARS; Thermal shocks.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300607

Vitamina E no desempenho, características de carcaça e qualidade do presunto cozido de suínos
Provedor de dados: 86
Autores: Souza,Vera Lúcia Ferreira de; Silva,Rui Sérgio Ferreira da; Silva,Caio Abércio da; Gasparino,Eliane.
O objetivo deste trabalho foi avaliar o efeito da vitamina E sobre o desempenho, características de carcaça e qualidade do presunto. Noventa e seis suínos foram submetidos aos seguintes tratamentos: controle, 100, 200 e 400 mg de vitamina E por kg de ração, fornecidas a partir de 116 dias antes do abate. Após o abate, as carcaças foram avaliadas, resfriadas, desossadas e o pernil foi removido para fabricação de presunto cozido. Análises dos teores de vitamina E e ácido tiobarbitúrico (TBARS) foram realizadas em amostras de pernil e de presunto. A média do ganho de peso foi 789,81 g por dia, do consumo 2.418 g por dia e da conversão alimentar 3,06. Os animais apresentaram 113,57 kg de peso vivo; 85,90 kg de peso de carcaça; 75,62% de rendimento de carcaça;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oxidação; TBARS; Período de validade; Espessura de toucinho; Profundidade de lombo.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000400017

Growth, antioxidant system, and immunological status of shrimp in bioflocs and clear water culture systems
Provedor de dados: 86
Autores: Souza,Diego Moreira de; Kutter,Mateus Tavares; Furtado,Plinio Schmidt; Romano,Luis Alberto; Wasielesky Junior,Wilson; Monserrat,José María; Garcia,Luciano.
Abstract: The objective of this work was to evaluate the effect of the traditional culture system in clear water and of the one in microbial flocs on the antioxidant and immunological status of Litopenaeus vannamei shrimp. Samples (gill, hemolymph, and hepatopancreas) were collected on days 15, 30, and 60 of the experimental period. The following immunological parameters were analyzed at each evaluation time: granular and hyaline hemocytes, total protein, and apoptosis. Assays on glutamate-cysteine ligase (GCL) activity and on the concentrations of reduced glutathione (GSH) and thiobarbituric acid reactive substances (TBARS) were also performed. The evaluated immunological parameters did not differ significantly between treatments. Shrimp reared in clear...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Litopenaeus vannamei; BFT; Oxidative stress; TBARS.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000101100

Perfil de ácidos graxos e estabilidade oxidativa do leite de vacas holandesas alimentadas com soja extrusada e selênio orgânico
Provedor de dados: 86
Autores: Paschoal,Juliana Jorge; Zanetti,Marcus Antonio; Del Claro,Gustavo Ribeiro; Melo,Mariza Pires de; Pugine,Silvana Piccoli; Cunha,José Aparecido.
O objetivo deste trabalho foi avaliar o efeito de dieta com alto teor de soja extrusada e selênio orgânico sobre o perfil de ácidos graxos e a estabilidade oxidativa do leite de vacas da raça Holandesa. Vinte e quatro vacas foram divididas em três blocos e distribuídas ao acaso em três tratamentos: dieta controle; dieta com 21% de soja extrusada e dieta com 21% de soja extrusada + 5 mg de selênio orgânico. O experimento teve duração de seis semanas. As vacas alimentadas com soja extrusada produziram leite com menor concentração de ácidos graxos de cadeias curta e média, maior concentração de ácidos graxos de cadeia longa, menor concentração de ácidos graxos saturados e maior concentração de ácidos graxos poliinsaturados e de ácido linoléico conjugado. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidante; Ácido linoléico conjugado; Índice de peróxidos; TBARS.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007001200018

Estresse oxidativo em girassol (Helianthus annuus) indica sinergismo para a mistura dos herbicidas metribuzin e clomazone
Provedor de dados: 87
Autores: Kruse,N.D.; Vidal,R.A.; Dalmaz,C.; Trezzi,M.M.; Siqueira,I.
Determinações bioquímicas e físico-químicas são úteis para verificar o tipo de interação herbicida. Três experimentos foram conduzidos com dois herbicidas geradores de estresse oxidativo para demonstrar o possível sinergismo em sua associação. Plantas de girassol foram cultivadas em solução nutritiva até o estádio de dois pares de folhas, quando então os herbicidas foram aplicados. Os tratamentos consistiram de metribuzin a 0 e 0,28 µmol L-1 e clomazone a 0 e 80 µmol L-1, com quatro repetições, isolados e em mistura. No material coletado, três dias após a aplicação, determinou-se o malondialdeído (MDA), pelo método das substâncias reativas ao ácido tiobarbitúrico (TBARS). Em outro experimento, os herbicidas foram testados sobre 40 discos de 4 mm de folhas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: TBARS; Condutividade eletrolítica; Sinergismo; Mistura de herbicidas.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582006000200023

Dietary oxidized poultry offal fat: broiler performance and oxidative stability of thigh meat during chilled storage
Provedor de dados: 89
Autores: Racanicci,AMC; Menten,JFM; Regitano-d'Arce,MAB; Torres,EAFS; Pino,LM; Pedroso,AA.
Two experiments were conducted to evaluate the effects of dietary oxidized poultry offal fat on the performance of broilers and on the oxidative stability of dark chicken meat. One hundred and sixty male chicks were fed a corn-soybean meal diet containing 4% fresh or oxidized poultry fat from 10 to 47 days of age. Fresh fat was stored frozen until diets were produced, and oxidized fat was obtained by electrical heating (110 to 120 ºC). Birds were slaughtered at 47 days of age, and carcass characteristics were measured. Skinless and deboned thigh meat was stored chilled during 12 days, and samples were periodically collected to assess their quality and oxidative stability. Dietary oxidized fat did not affect bird performance or carcass characteristics....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipid oxidation; Meat quality; TBARS; Oxidized fat.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100005

Mineral Source and Vitamin Level in Broiler Diets: Effects on Performance, Yield, and Meat Quality
Provedor de dados: 89
Autores: Ribeiro,MV; Bittencourt,LC; Hermes,RG; Rönnau,M; Rorig,A; Lima,FK; Fernandes,JIM.
ABSTRACT The purpose of this trial was to supplement commercial broiler diets with optimum vitamin programs and higher availability of mineral sources, and to evaluate the effect on performance, yield and meat quality of broilers. The study used 1800 male broiler chicks randomly distributed in a 2 x 2 factorial design (vitamin programs - optimum and commercial vs. mineral sources - inorganic (sulfates) and carbo-amino-phospho-chelate (CAPC)). Supplementation associating optimum vitamin levels and mineral source CAPC resulted in better feed conversion and higher carcass weight at 42 days of age (p&lt;0.05). Supplementation of diets with optimum vitamin levels resulted in higher absolute and relative breast weight, lower abdominal fat deposition, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dripping; Shear force; TBARS; White striping.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200321

Dietary Supplementation of Barbatimão (Stryphnodendron Adstringens) and Pacari (Lafoensia Pacari) Extracts on the Oxidative Stability and Quality of Chicken Meat
Provedor de dados: 89
Autores: Lima,CB; Migotto,DL; Oliveira,GR; Souza,TC; Santana,RO; Castejon,FV; Tanure,CBGS; Santana,AP; Stringhini,JH; Racanicci,AMC.
ABSTRACT In order to evaluate the antioxidant effects of barbatimão (BAR) or pacari (PAC) on chicken meat oxidative stability and quality, seven dietary treatments containing in three different BAR and PAC concentrations (200, 400 and 600ppm) plus a negative control (CONT) were fed to 350 broilers from 1 to 41 days of age. Ten birds per treatment were slaughtered to collect breast and thigh meat to evaluate pH, color (L*, a*, b*), cooking weight loss (CWL), and shear force (SF) 24 hours postmortem, and TBARS levels in precooked meatballs stored chilled for 8days. The dietary supplementation with BAR and PAC extracts did not affect pH and color, but reduced (p&lt;0.05) SF in breast meat compared with CONT suggesting improved tenderness. PAC200 increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant activity; Brazilian plants; Broiler meat; Quality attributes; TBARS.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400669

Effects of the reduction or withdrawal of the vitamin premix from the diet on chicken performance and meat quality
Provedor de dados: 89
Autores: Moravej,H; Alahyari,SM; Shivazad,M.
The present study was carried out to examine the effect of vitamin premix reduction or withdrawal in finisher diet (29 to 42 days of age) on the performance and meat quality of chicks fed a wheat/barley based diet and reared on floor pens. A total of 504 male broiler chicks (Ross® 308) were allocated to seven treatment groups, with four replicates per treatment and 18 birds per replicate. All data were analyzed according to a completely randomized design. Results showed that the reduction or withdrawal of the vitamin premix from diets in different weeks of finisher period did not affect chicken performance (p&amp;gt;0.05). There were no significant differences in TBARS values of thigh samples of birds slaughtered at 35 days of age. However, the TBARS value...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitamin premix; Broiler; Floor; Performance; Wheat; TBARS.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400002

Ractopamine levels on performance, carcass characteristics and quality of pig meat
Provedor de dados: 96
Autores: Garbossa,Cesar Augusto Pospissil; Sousa,Raimundo Vicente de; Cantarelli,Vinícius de Souza; Pimenta,Maria Emília de Sousa Gomes; Zangeronimo,Márcio Gilberto; Silveira,Hebert; Kuribayashi,Thiago Hiroshi; Cerqueira,Luis Gustavo dos Santos.
This study evaluated the effect of ractopamine (RAC) on the performance of finishing pigs and the meat quality of these animals. Seventy crossbred pigs (35 barrows and 35 females) selected for high gain of lean meat, with initial weight of 77.1±0.32 kg were distributed in randomized blocks with five treatments (0, 5, 10, 15, and 20 ppm RAC in the diet) and seven replications during 28 days. The experimental unit was represented by a male and a female pig. Regarding the performance variables, there was a linear increase in final weight with increasing levels of RAC, as well as in average daily weight gain. An improvement in feed conversion was observed for animals fed RAC, and the optimal level - estimated by the LRP model - was ~ 5 ppm. For feed intake, no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-adrenergic agonist; Lipid oxidation; Meat quality; TBARS.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000500004

Efeito do uso de óleo de vísceras de aves oxidado na ração de frangos de corte sobre o desempenho, a composição da carcaça e a estabilidade oxidativa da carne da sobrecoxa
Provedor de dados: 96
Autores: Racanicci,Aline Mondini Calil; Menten,José Fernando Machado; d'Arce,Marisa Aparecida Bismara Regitano; Pino,Lílian Marques.
Foi conduzido um experimento utilizando-se 200 pintos de corte da linhagem Ross de 10 a 40 dias de idade alimentados com ração à base de milho e farelo de soja e suplementada com 4% de óleo de vísceras de aves fresco ou oxidado, com o objetivo de avaliar os efeitos da qualidade do óleo utilizado nas rações sobre o desempenho de frangos de corte e a estabilidade oxidativa da carne de sobrecoxa congelada. Óleo de vísceras recém produzido com absorbâncias específicas de 5,80 a 232 nm e 0,690 a 532 nm, indicando a presença de quantidades mínimas de compostos de oxidação, foi congelado (-18ºC) até o momento da produção das rações. O óleo oxidado foi produzido a partir deste mesmo lote, que foi aquecido em uma fritadeira elétrica com temperatura em torno de 110...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Características da carcaça; Óleo de frango; Oxidação lipídica; Qualidade da carne de frango; TBARS.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008000300009

Oxidative damage and photosynthetic impairment in tropical rice cultivars upon exposure to excess iron
Provedor de dados: 63
Autores: Pinto,Samuel de Souza; Souza,Anna Elisa de; Oliva,Marco Antonio; Pereira,Eduardo Gusmão.
ABSTRACT Iron plays a pivotal role in the redox reactions of photosynthesis and metabolic processes such as chlorophyll synthesis. Iron availability in waterlogged soils can reach toxic levels and promote oxidative stress. Fe toxicity is the most concerning of stresses for rice in many lowland environments around the world and may cause severe impairments in rice photosynthesis. This study aimed to investigate the extension of oxidative stress after excess Fe exposure and its effects on the photosynthesis of rice cultivars with differential sensitivity. Three Brazilian rice cultivars (EPAGRI 107, BRSMG SELETA and BR IRGA 409) were grown in Hoagland nutrient solution (pH 4.0) with two Fe-EDTA doses corresponding to excess Fe (7 mM) and control (0.009 mM)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: TBARS; Iron toxicity; Light energy dissipation; Oxidative stress; Photosynthesis.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000300217

Effects of supplementing broiler diets with a combination of fermented red ginseng marc powder and red-koji on thigh meat quality of broiler chick during storage
Provedor de dados: 2
Autores: Ji, Joong Gu; Choi, In Hag.
We assessed the effects of supplementing broiler diets with a combination of fermented red ginseng marc powder and red-koji on thigh meat quality of broiler chick during storage. Broilers (n = 120) were randomly assigned to one of two groups: control or treatment with 1% fermented red ginseng marc combined with red-koji. There were four replicates per group, each comprising 15 birds (10 male and 5 female). Neither the dietary supplementation group nor the number of storage days had a significant (p &gt; 0.05) effect on meat pH. However, TBARS, a measure of lipid oxidation, was significantly affected (p &lt; 0.05) by both the number of storage days and the dietary supplementation, with reduced TBARS activity noted in the treatment group after 7 days of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermented red ginseng marc; Red-koji; PH; TBARS; Meat color; Thigh meat.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/30771

Effect of silymarin on sodium fluoride-induced toxicity and oxidative stress in rat cardiac tissues
Provedor de dados: 42
Autores: Nabavi,Seyed M.; Nabavi,Seyed F.; Moghaddam,Akbar H.; Setzer,William N.; Mirzaei,Morteza.
This study aim to evaluate the protective effect of silymarin on sodium fluoride-induced oxidative stress in rat cardiac tissues. Animals were pretreated with silymarin at 20 and 10 mg/kg prior to sodium fluoride consumption (600 ppm through drinking water). Vitamin C at 10 mg/kg was used as standard antioxidant. There was a significant increase in thiobarbituric acid reactive substances level (59.36 ± 2.19 nmol MDA eq/g tissue) along with a decrease in antioxidant enzymes activity (64.27 ± 1.98 U/g tissue for superoxide dismutase activity and 29.17 ± 1.01 µmol/min/mg protein for catalase activity) and reduced glutathione level (3.8 ± 0.15 µg/mg protein) in the tissues homogenates of the sodium fluoride-intoxicated rats. Silymarin administration to animals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catalase; Glutathione; Sodium fluoride; Superoxide dismutase; Silymarin; TBARS.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400026

Estabilidade oxidativa e perfil de ácidos graxos do leite de vacas suplementadas com óleo de linhaça na dieta associado ou não ao selenito de sódio injetável
Provedor de dados: 45
Autores: Cardozo,L.; Cecim,M.; Soares,E.; Moreira,D.K.; Schuster,R.; Richards,N.S.P.S.; Unfer,T.C.; Quatrin,A.; Fuke,G.; Roehrs,M.
Avaliou-se o efeito da suplementação com óleo de linhaça na dieta, com ou sem injeção de selenito de sódio, sobre o perfil de ácidos graxos e sobre a estabilidade oxidativa do leite de vacas leiteiras. Catorze vacas foram distribuídas em três tratamentos: as do grupo 1, que receberam diariamente 400mL de óleo de linhaça (LIN); as do grupo 2, 400mL de óleo de linhaça + 0,2mg/kg de selenito de sódio IM (LINSe); e as do grupo 3 (controle), que não foram tratadas (C). O óleo foi fornecido diariamente após 15 dias da aplicação única de selenito de sódio, e o experimento teve duração de quatro semanas. Os animais suplementados com o óleo de linhaça produziram leite com altas porcentagens de ácido linoleico conjugado (CLA) e de ômega 3, contudo mais suscetível à...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidante; Ácido linoleico conjugado; Selenito de sódio; Glutationa peroxidase; TBARS.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300031

Efeito do uso de minerais traços (cobre, zinco, selênio e manganês) e vitaminas (A e E) injetáveis sobre o estresse oxidativo e função de neutrófilos de fêmeas da raça Holandesa no período de transição
Provedor de dados: 45
Autores: Collet,S.G.; Ferronatto,J.A.; Santos,M.; Blagitz,M.G.; Enders,M.S.P.; Müller,E.I.; Sousa,R.S.; Ortolani,E.L.; Thaler Neto,A.; Leal,M.L.R.
RESUMO O objetivo deste estudo foi avaliar o efeito metafilático de minerais traços e vitaminas A e E injetáveis, em parâmetros do estresse oxidativo e na função de neutrófilos em fêmeas da raça Holandesa no período de transição. Sessenta animais foram divididos em dois grupos: animais que receberam minerais traços e vitaminas A e E injetáveis (GMTV) (n= 30) e grupo controle (GC) (n= 30). Não houve diferença significativa entre os grupos nos parâmetros avaliados, porém observou-se diferença significativa entre tratamento e dia para os valores da SOD, com maior atividade dessa enzima em fêmeas GMTV, nas semanas próximas ao parto. Observou-se diferença de dia e para interação tratamento e dia para o TBARS, em que fêmeas GMTV mostraram menores valores de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Superóxido dismutase; Glutationa peroxidase; TBARS; NBT; Período de transição.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000401227

Efeito do armazenamento e da cantaxantina dietética sobre a qualidade do ovo fértil e o desenvolvimento embrionário
Provedor de dados: 45
Autores: Rocha,J.S.R.; Barbosa,V.M.; Lara,L.J.C.; Baião,N.C.; Cançado,S.V.; Lana,A.M.Q.; Pompeu,M.A.; Vasconcelos,R.J.C.; Machado,A.L.C.; Miranda,D.J.A.; Fernandes,M.N.S.; Mendes,P.M.M.
O presente experimento foi conduzido em lote de matrizes Cobb desde 46 até 60 semanas de idade. Os tratamentos foram definidos pelas dietas (com e sem adição de 6ppm de cantaxantina na dieta das matrizes) e pelos períodos de armazenamento dos ovos (três e sete dias), em delineamento inteiramente ao acaso, em arranjo fatorial 2x2 (duas dietas x dois períodos de armazenamento). A cantaxantina dietética elevou o escore de cor da gema de sete para 14. O armazenamento dos ovos por sete dias prejudicou a qualidade dos ovos, promoveu oxidação de ácidos graxos da gema e retardou o desenvolvimento embrionário.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidante; Ácido graxo; Carotenoide; Gema; TBARS.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300027

Lipid peroxidation and total radical-trapping potential of the lungs of rats submitted to chronic and sub-chronic stress
Provedor de dados: 56
Autores: Torres,R.L.; Torres,I.L.S.; Gamaro,G.D.; Fontella,F.U.; Silveira,P.P.; Moreira,J.S.R.; Lacerda,M.; Amoretti,J.R.; Rech,D.; Dalmaz,C.; Belló,A.A.
Exposure to stress induces a cluster of physiological and behavioral changes in an effort to maintain the homeostasis of the organism. Long-term exposure to stress, however, has detrimental effects on several cell functions such as the impairment of antioxidant defenses leading to oxidative damage. Oxidative stress is a central feature of many diseases. The lungs are particularly susceptible to lesions by free radicals and pulmonary antioxidant defenses are extensively distributed and include both enzymatic and non-enzymatic systems. The aim of the present study was to determine lipid peroxidation and total radical-trapping potential (TRAP) changes in lungs of rats submitted to different models of chronic stress. Adult male Wistar rats weighing 180-230 g...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stress; TBARS; TRAP; Free radicals; Lungs; Oxidative stress.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000200004

Effect of bullfrog (Rana catesbeiana) oil administered by gavage on the fatty acid composition and oxidative stress of mouse liver
Provedor de dados: 56
Autores: Silva,L.P.; Miyasaka,C.K.; Martins,E.F.; Leite,J.R.S.A.; Lacava,Z.G.M.; Curi,R.; Azevedo,R.B.
The aim of the present study was to investigate the effects of daily intragastric administration of bullfrog oil (oleic, linoleic and palmitoleic acid-rich oil), corresponding to 0.4% of body weight for four weeks, on fatty acid composition and oxidative stress (lipid peroxidation and catalase activity) in mouse liver. The activities of aspartate aminotransferase (AST), alkaline phosphatase (ALP), alanine aminotransferase (ALT), and gamma-glutamyltransferase (GGT), biomarkers of tissue injury, were determined in liver homogenates and serum. The proportions of 18:2n-6, 20:4n-6, 20:5n-3, and 22:6n-3 (polyunsaturated fatty acids, from 37 to 60%) in the total fatty acid content were increased in the liver of the bullfrog oil-treated group (P &lt; 0.05)...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Bullfrog oil; Liver; TBARS; Catalase activity; Lipid peroxidation; Monounsaturated fatty acid.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004001000007

Oxidative stability during frozen storage of fillets from silver catfish (Rhamdia quelen ) sedated with the essential oil of Aloysia triphylla during transport
Provedor de dados: 65
Autores: Daniel,Ana Paula; Ferreira,Lauren Fresinghelli; Klein,Bruna; Ruviaro,Amanda Roggia; Quatrin,Andréia; Parodi,Thaylise Vey; Zeppenfeld,Carla Cristina; Heinzmann,Berta Maria; Baldisserotto,Bernardo; Emanuelli,Tatiana.
ABSTRACT: This research aimed to evaluate whether the essential oil of Aloysia triphylla (EOAT) used in vivo as a sedative in the water for transporting fish could increase the oxidative stability of silver catfish (Rhamdia quelen) fillets during frozen storage. The chemical composition of EOAT and of fillets from fish exposed to EOAT (0, 30 or 40µL L-1) were assessed. The pH and lipid oxidation parameters (conjugated dienes, CD; thiobarbituric acid-reactive-substances, TBARS) were evaluated in the fillets throughout the storage period (-18±2oC/17 months). The main compounds found in EOAT were α- and β-citral. Treatment with EOAT did not modify the proximate composition of the fillets, but 40µL L-1 EOAT reduced pH levels when compared to the control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipid oxidation; Transport; Fish; TBARS; Natural anesthetic.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000300560

Dextran iron in anemic lambs: effects on reticulocytosis and free radical production
Provedor de dados: 65
Autores: Rocha,Ricardo Xavier da; Bondan,Carlos; Marinho,Roberto; Lopes,Sônia Terezinha dos Anjos; Cecim,Marcelo.
Anemia due to worm infection is a major cause of loss in the sheep industry, due to deaths, drop in average daily gains and long recovery time following treatment. The present experiment was aimed at evaluating the oxidative status and the recovery of red blood cell (RBC) profile in lambs with induced anemia by bleeding, treated or not with dextran iron. Ten ram lambs 5 to 7 months old were used. Blood samples were drawn every other day and when reached packed cell volume (PCV) of 15% were randomly allocated (day zero) to one of the experimental groups. Treated group received a single dose of 25mg per kg body weight of a commercial formulation of dextran iron, the control group received no treatment. Blood samples were taken on days 0, 7, 14, and 21 after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: TBARS; NPTH; Lambs; Free-radicals; Iron.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000500019

Óleos essenciais como substituintes de antibióticos promotores de crescimento em frangos de corte: perfil de soroproteínas e peroxidação lipídica
Provedor de dados: 65
Autores: Traesel,Carolina Kist; Lopes,Sonia Terezinha dos Anjos; Wolkmer,Patricia; Schmidt,Candice; Santurio,Janio Morais; Alves,Sydney Hartz.
Os óleos essenciais são alternativas ao uso de promotores de crescimento antibióticos na avicultura, devido à sua ação antimicrobiana, além de possuírem propriedades antioxidante e imunomoduladora. Este estudo foi realizado com o objetivo de avaliar o efeito da suplementação dietética de três doses de óleos essenciais (OLES) de orégano (Origanum vulgare L.), sálvia (Salvia officinalis L.), alecrim (Rosmarinus officinalis L.) e extrato de pimenta (Capsicum frutescens L.) em frangos de corte, pela análise do perfil eletroforético de soroproteínas e da peroxidação lipídica plasmática. Os animais (n=910) foram alocados de forma aleatória em cinco tratamentos, com sete repetições de 26 aves cada: o grupo controle (Tc), que recebeu dieta basal sem aditivos; o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orégano; Sálvia; Alecrim; Extrato de pimenta; Eletroforese; TBARS.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000200016

Valores de nitrito e TBARS durante o processamento e armazenamento da paleta suína curada, maturada e fermentada
Provedor de dados: 65
Autores: Terra,Nelcindo Nascimento; Cichoski,Alexandre José; Freitas,Renato João Sossela de.
Paletas suínas desossadas pesando em média 1,6kg receberam injeção de salmoura contendo Staphylococcus xylosus. Permaneceram 30 dias em câmara de maturação em duas faixas de temperatura diferentes (2°C a 8°C e de 4°C a 9°C), sendo posteriormente armazenadas durante 120 dias, nas temperaturas de 10°C e 25°C, embaladas a vácuo. Durante o período de permanência das paletas dentro da câmara e durante o armazenamento, foram monitorados os valores de nitrito e TBARS com o objetivo de identificar onde o nitrito atuaria como conservante e antioxidante e onde o nível de TBARS poderia ser prejudicial à saúde do consumidor. Observou-se que a concentração dos nitritos até o décimo dia de permanência da paleta dentro da câmara, no segundo tratamento, atuou como efeito...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrito; TBARS; Paleta suína; Saúde; Maturada; Antioxidante.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782006000300037

Mate extract on lipid and color changes of dourado fillets during frozen storage
Provedor de dados: 65
Autores: Veeck,Ana Paula de Lima; Boligon,Aline Augusti; Athayde,Margareth Linde; Emanuelli,Tatiana.
This study aimed to evaluate whether mate (Ilex paraguariensis A. St. Hil) extract would change lipid and color stability of dourado (Salminus brasiliensis) fillets during frozen storage. Fish fillets were dipped (1 min) in distilled water (control) or in aqueous extract of mate (0.1g mL-1, w/v) and were stored at -7°C for up to 12 months. Conjugated dienes (CD) increased in control fillets after 6 months of storage and then decreased, whereas thiobarbituric acid reactive substances (TBARS) value increased along the whole experimental period. Mate treatment reduced CD and TBARS values of fillets. Dourado fillets tended to yellow along the whole experimental period (average H*= 72.55) Although the mate treatment had increased the yellowness of fillets at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conjugated dienes; TBARS; DPPH; Ilex paraguariensis A. St. Hil; Salminus brasiliensis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000700027

Control of the lipid oxidation in Nile tilapia feed
Provedor de dados: 65
Autores: Grassi,Thiago Luís Magnani; Marcos,Marcelo Tacconi de Siqueira; Ponsano,Elisa Helena Giglio.
ABSTRACT: The purpose of this research was to investigate the progress of the rancidity in Nile tilapia diets containing bacterial biomass of Rubrivivax gelatinosus . Six experimental treatments comprised basal diet (negative control), diet with asthaxanthin (positive control) and 4 diets with different concentrations of the bacterial biomass. The thiobarbituric acid assay for rancidity analyses were accomplished after 6 and 12 months of diets storage. It was concluded that  Rubrivivax gelatinosus biomass minimized the racidity in Nile tilapia diets in 32.52 to 44.72% at 6 months and in 37.85 to 52.37% at 12 months of storage.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Antioxidant; Rancidity; Rubrivivax gelatinosus; TBARS.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901675

Changes in oxidative markers, endogenous antioxidants and activity of the enzyme acetylcholinesterase in farmers exposed to agricultural pesticides - a pilot study
Provedor de dados: 65
Autores: Murussi,Camila; Horn,Roberta Cattaneo; Santi,Adriana; Clasen,Barbara Estevão; Reis,Gabriel; Souza,Daniela; Bortolotto,Josiane Woutheres; Manfio,Candida Elisa; Loro,Vania Lucia.
Agricultural practices are directly related to the use of pesticides, which indiscriminately and without due care may contribute to the occurrence of numerous intoxications. Several studies have demonstrated the relationship of certain pesticides and the occurrence of oxidative stress and therefore, in recent years have developed methods of analysis of several biomarkers of cellular damage that can be measured and quantified. In this context, the objective of this study was to evaluate the possible changes in biochemical markers: glutamic aspartate aminotransferase (AST), alanine aminotransferase (ALT), creatinine, urea, total protein, and oxidative markers such as lipid peroxidation, damage to proteins and the activity of the enzymes acetylcholinesterase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rarmers; Oxidative stress; TBARS; Protein carbonyls.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000701186