Consulta: creatorFacets:"Melo,Mariza Pires de"
Registros recuperados: 6
Data/hora: 01/06/2024 00:31:16

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

Oil blends with sesame oil in fish diets: oxidative stress status and fatty acid profiles of lambari
Provedor de dados: 96
Autores: Natori,Mariene Miyoko; Oliveira,Ricardo Henrique Franco de; Parisi,Giuliana; Bonelli,Antonio; Melo,Mariza Pires de; Viegas,Elisabete Maria Macedo.
ABSTRACT The objective of this research was to evaluate the growth performance, oxidative stress, and fatty acid profiles of lambari (Astyanax altiparanae) fed diets containing different lipid sources: soybean oil, linseed oil, and freshwater fish residue oil combined or otherwise with sesame oil (SEO). The fish (mean weight 0.95±0.46 g; mean length 4.21±2.77 cm) were distributed into 24 cages (cage capacity: 0.70 m3; fish density: 276 individuals m−3) in six treatments and four replicates. After 80 days of feeding, they were weighed, and samples were collected for assay of catalase, glutathione reductase (GR), and lactate dehydrogenase (LDH) enzyme activities in muscle and analysis of the fatty acid profiles of polar and neutral fractions of whole...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Lipid; Nutrition; Oxidation.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100150

Copper and selenium supplementation in the diet of Brangus steers on the nutritional characteristics of meat
Provedor de dados: 96
Autores: Netto,Arlindo Saran; Zanetti,Marcus Antonio; Del Claro,Gustavo Ribeiro; Vilela,Flávio Garcia; Melo,Mariza Pires de; Correa,Lísia Bertonha; Pugine,Silvana Marina Piccoli.
Twenty-eight Brangus cattle were used to determine the effect of copper and selenium supplementation on the carcass characteristics, fatty acid composition of the longissimus dorsi muscle and on the copper and selenium concentrations in the liver. The treatments were: no supplementation of copper or selenium; 2 mg Se/kg DM as sodium selenite; 40 mg Cu/kg DM as copper sulfate; and 2 mg Se/kg DM as sodium selenite and 40 mg Cu/kg DM as copper sulfate. The fat thickness, rib eye area and fatty acid composition of the longissimus dorsi muscle were not affected by treatments. There was no effect on carcass yield and cooling loss with the supplementation of copper, selenium or selenium × copper in the levels studied. For the ether extract concentration in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Concentrations; Fatty acids; Minerals.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100010

Rosemary and Pitanga Aqueous Leaf Extracts On Beef Patties Stability under Cold Storage
Provedor de dados: 52
Autores: Vargas,Flávia Carolina; Arantes-Pereira,Lucas; Costa,Patrícia Argemira da; Melo,Mariza Pires de; Sobral,Paulo José do Amaral.
ABSTRACT Because processing and storage conditions affect several beef quality attributes, the food industry uses a variety of synthetic antioxidants. However, some synthetic antioxidants have been questioned regarding its safety, and thus the interest in using natural antioxidants in food products is increasing. This paper aimed at assessing leaf aqueous extracts of Rosemary (Rosmarinus officinalis Linnaeus) and Pitanga (Eugenia uniflora Linnaeus) as antioxidants in beef cold storage. After 48h storage, patties added of Rosemary leaf extracts showed increased pH. Patties added of Pitanga extracts had the lowest a* color values. Oxymyoglobin levels were significantly higher for Negative control, than for Pitanga treatment. The 10% extract addition...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Myoglobin; Color; Oxidation; Lipid.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100514

Atividade da catalase e da lactato desidrogenase em tilápias submetidas a estresse de confinamento: efeito da cor do ambiente
Provedor de dados: 65
Autores: Pereira-da-Silva,Elyara Maria; Melo,Mariza Pires de; Oliveira,Ricardo Henrique Franco de; Pugine,Silvana Marina Piccoli.
Avaliaram-se os efeitos da cor do ambiente sobre o crescimento e a atividade da enzima antioxidante catalase (CAT) e da lactato desidrogenase (LDH) em tilápias do Nilo (n=24; 36,2±3,6g). Oito exemplares foram mortos para determinação da atividade basal das enzimas e os demais permaneceram isolados durante 14 dias sob espectro de luz branca ou azul (n=8 peixes/tratamento). A seguir os peixes foram submetidos a um estresse diário de confinamento de 90 minutos (15° ao 28° dia) e pesados semanalmente para cálculo da taxa de crescimento específico (TCE). A TCE negativa confirmou que o confinamento provocou estresse nos peixes, independentemente da cor do ambiente. O aumento da atividade da LDH no músculo vermelho dos peixes mantidos sob luz branca ou azul...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Confinamento; Crescimento; Estresse oxidativo; Metabolismo; Oreochromis niloticus.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000500022

Noninvasive method to assess the electrical brain activity from rats
Provedor de dados: 65
Autores: Ferrari,Rosana; Arce,Aldo Ivan Cespedes; Melo,Mariza Pires de; Costa,Ernane Jose Xavier.
This research presents a noninvasive method for the acquisition of brain electrical signal in rat. Was used an electroencephalography (EEG) system developed for bovine and adapted to rats. The bipolar electrode system (needle electrodes) was glued on the surface of the head of the animal without surgical procedures and the other electrode was glued to the tail, as ground. The EEG activity was sampled at 120Hz for an hour. The accuracy and precision of the EEG measurement was performed using Fourier analysis and signal energy. For this, the digital signal was divided into sections successive of 3 seconds and was decomposed into four frequency bands: delta (0.3 to 4Hz), theta (4-8Hz), alpha (8-12Hz) and beta (12-30Hz) and energy (µV²) of the series of time...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological signals; Digital signal processing; Central nervous system; EEG.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001000017