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Essential oil from Chenopodium ambrosioides L.: secretory structures, antibacterial and antioxidant activities Biological Sciences
Santiago, Juliana Andrade; Cardoso, Maria das Graças; Batista, Luís Roberto; Castro, Evaristo Mauro de; Teixeira, Maria Luisa; Pires, Marinês Ferreira.
The aim of this study was to evaluate the antibacterial and antioxidant activities of essential oil from Chenopodium ambrosioides L. and to determine its secretory structures. The essential oil was extracted through the hydrodistillation technique using a modified Clevenger apparatus (2 hours) and chemically characterized by GC/MS and GC-FID. The antioxidant activity was determined by monitoring the reduction of 2,2-diphenyl-1-picrylhydrazyl (DPPH) and by the oxidation of the β-carotene/linoleic acid system. The evaluation of antibacterial activity was performed by the agar cavity diffusion technique using the microorganisms Staphylococcus aureus, Listeria monocytogenes, Escherichia coli and Salmonella Cholerasuis. The characterization of trichomes was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Natural products; Antioxidant assays; Antimicrobial; Trichomes.
Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/28303
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Evaluation of antioxidant potential of Brazilian rice cultivars Ciênc. Tecnol. Aliment.
Palombini,Sylvio Vicentin; Maruyama,Swami Arêa; Claus,Thiago; Carbonera,Fabiana; Souza,Nilson Evelázio de; Visentainer,Jesuí Vergílio; Gomes,Sandra Teresinha Marques; Matsushita,Makoto.
This study quantified the fatty acids and evaluated the proximate composition, antioxidant activity (using the Quencher procedure), and total phenolic compound concentrations in Brazilian rice cultivars. The cultivars studied showed high amounts of unsaturated fatty acids, such as linoleic and oleic acid. The ratios of polyunsaturated and saturated fatty acids obtained were high. Regarding the antioxidant activity, the best results were found using the ABTS method and the worst in the DPPH assay. The results of the DPPH and FRAP assays showed the highest correlation. The antioxidant capacity results obtained were also much higher than those reported for other varieties worldwide. Therefore, the Quencher procedure is highly suitable for application in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian rice; Antioxidant assays; Quencher procedure.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000400015
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Rosemary as natural antioxidant to prevent oxidation in chicken burgers Ciênc. Tecnol. Aliment.
PEREIRA,Daiane; PINHEIRO,Rafaelly Simionatto; HELDT,Leila Fernanda Serafini; MOURA,Cristiane de; BIANCHIN,Mirelli; ALMEIDA,Jacqueline de Florio; REIS,Amália Soares dos; RIBEIRO,Ingridy Simone; HAMINIUK,Charles Windson Isidoro; CARPES,Solange Teresinha.
Abstract Rosemary (Rosmarinus officinalis) is known for their sensory characteristics and antioxidant properties, mainly due to the presence of several phenolic compounds. The aim of this work, was determine the antioxidant activity and apply the Rosemary lyophilized extract (RLE) in chicken burger, for assess their ability to reduce the lipid oxidation. Total antioxidant capacity and phenolic compounds profile were analyzed by colorimetric tests and liquid chromatography analysis, respectively. Thiobarbituric acid reactive substances assay was used to evaluate the ability of the RLE to prevent lipid peroxidation in chicken burger stored at 4 °C. Three treatments of chicken burgers were prepared (T1 – control, without addition of synthetic antioxidant BHT:...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lipid oxidation; Antioxidant assays; TBARS; HPLC; Rosmarinus officinalis.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000500017
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