|
|
|
| Registros recuperados: 26 | |
|
|
| Arruda,Rejanne Lima; Paz,Andressa Tuane Santana; Bara,Maria Teresa Freitas; Côrtes,Márcio Vinicius de Carvalho Barros; Filippi,Marta Cristina Corsi de; Conceição,Edemilson Cardoso da. |
| ABSTRACT: Phytoalexins are compounds that have been studied a few years ago, which present mainly antimicrobial activity. The plants of the family Poaceae are the most geographically widespread and stand out for their economic importance, once they are cereals used as staple food. This family stands out for having a variety of phytoalexins, which can be synthesized via the shikimic acid (the phenylpropanoids), or mevalonic acid, being considered terpenoid phytoalexins. The characterization of these compounds with antimicrobial activity is carried out using chromatographic techniques, and the high-performance liquid chromatography (HPLC) coupled with mass spectrometry are the most efficient methods in this process. This research aimed to present an approach... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metabolites; Protection of plants; Signaling; Oryza sativa. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000701206 |
| |
|
|
| Leal,Daniela Piaz Barbosa; Dick,Deborah Pinheiro; Stahl,Anna Meike; Köppchen,Stephan; Burauel,Peter. |
| ABSTRACT: In Brazil, atrazine (ATZ) is widely applied to maize (Zea mays L.) fields for weed control. The presence of ATZ and its metabolites in soil and water matrices has become a matter of some concern for governmental authorities as well as for society at large. This study evaluated the patterns of ATZ degradation (mineralization, extractable and non-extractable ATZ residues, and metabolite formation) in a Brazilian Typic Paleudult. Soil samples from a cultivated area under a no-tillage system with a history of ATZ application were incubated with 14C-ATZ in both the presence and absence of straw cover on the soil surface, and the evolved 14CO2 was determined by liquid scintillation. Samples from an area with native vegetation, adjacent to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atrazine mineralization; Sorption; Metabolites; No-tillage. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019000100063 |
| |
|
|
| Khan,Shamiyan R.; Nirmal,J.I. Kumar; Kumar,Rita N.; Patel,Jignasha G.. |
| Penicillum janthinellum SDX7 was isolated from aged petroleum hydrocarbon-affected soil at the site of Anand, Gujarat, India, and was tested for different pH, temperature, agitation and concentrations for optimal growth of the isolate that was capable of degrading upto 95%, 63% and 58% of 1%, 3% and 5% kerosene, respectively, after a period of 16 days, at optimal growth conditions of pH 6.0, 30 °C and 180 rpm agitation. The GC/MS chromatograms revealed that then-alkane fractions are easily degraded; however, the rate might be lower for branched alkanes, n-alkylaromatics, cyclic alkanes and polynuclear aromatics. The test doses caused a concentration-dependent depletion of carbohydrates of P. janthinellum SDX7 by 3% to 80%, proteins by 4% to 81% and amino... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Penicillum janthinellum SDX7; Optimal growth; Metabolites; Kerosene degradation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200397 |
| |
|
|
| MOURA, P. F.; GRIBNER, C.; RECH, K. S.; GATTO, L. J.; RIGONI, A. A. R.; BETIM, F. C. M.; WGNER, R.; DIAS, J. de F. G.; MIGUEL, O. G.; AUER, C. G.; MIGUEL, M. D.. |
| Resumo As pesquisas com fungos em busca de substâncias com potencial atividade biológica ganham cada vez mais destaque por serem fontes sustentáveis de novas moléculas. Diplodia pinea é um fungo fitopatogênico encontrado em espécies florestais, que tem apresentado poucos relatos de moléculas com atividade biológica e pode apresentar potencial biotecnológico promissor. Assim, o objetivo deste estudo foi detectar substâncias produzidas por esse fungo em meio líquido, sob condições de estresse. Um metabólito foi detectado na fração alcoólica e caracterizado por difração de raios-X como D-manitol. Esta é a primeira descrição deste monossacarídeo produzido por D. pinea. Abstract Research with fungi in search of substances with potential biological activity is... |
| Tipo: Artigo de periódico |
Palavras-chave: Difração de raios X; Metabólitos; Carboidrato; Biotecnologia; Fungo; Carbohydrates; Biotechnology; Fungi; Metabolites; X-ray diffraction. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132796 |
| |
|
|
| TERRA, L. R.; QUEIROZ, S. C. do N. de; TERAO, D.; FERREIRA, M. M. C.. |
| Papaya (Carica papaya) is a fruit widely consumed in the world due to its pleasant taste and high nutritional value. Brazil stands out as one of the world?s largest producers and exporters of papaya. Concomitant to the rapid expansion of fruit production and increase in export, the phytosanitary problems have grown, such as diseases caused by post-harvest fungi, which results in enormous losses to those involved in the export1. Conventional methodologies for detection and classification of fungi are time-consuming, laborious and can only be performed after the manifestation of symptoms in fruits2. Thus, it is necessary to develop methods that allow the early diagnosis of the presence of fungi, which are fast, efficient and that permit the qualitative... |
| Tipo: Separatas |
Palavras-chave: Carica Papaya; Cromatografia; Metabolites. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1116541 |
| |
|
|
| Viana,P.C.R.; Caldas-Bussiere,M.C.; Marins,R.S.Q.S.; Menna-Barreto,L.S.; Cury,L.J.. |
| Records of plasma calcium (Ca++), phosphorus (Pi), potassium (K+), sodium (Na+), chloride (Cl-), magnesium (Mg++), iron (Fe++), glucose, cholesterol, triglycerides and total protein levels were measured to determine the effects of exercise on occurrence of diurnal rhythms in Throughbred racehorses (n=7) under physical training. Physical activities consisted of gallop on the track and walking. Blood samples were collected from jugular vein every 4h over a 48h period. Plasma Ca++, K+, Mg++ and Na+ levels were obtained by flame photometry; and, Pi, Cl-, Fe++, glucose, cholesterol, triglycerides and total protein levels were measured by colorimetric tests using visible UV spectrophotometry. The data were analyzed using a 24h period to each exercise performed.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Horse; Chronobiology; Exercise; Ions; Metabolites; Diurnal rhythms. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000400006 |
| |
|
| |
|
| |
|
|
| Gomes,G.L.G.C.; Carbonari,C.A.; Velini,E.D.; Trindade,M.L.B.; Silva,J.R.M.. |
| This study has aimed to develop a method for simultaneous extraction and determination by liquid chromatography and mass spectrometry (LC-MS/MS) of glyphosate, aminomethylphosphonic acid (AMPA), shikimic acid, quinic acid, phenylalanine, tyrosine and tryptophan. For the joint analysis of these compounds the best conditions of ionization in mass spectrometry and for chromatographic separation of the compounds were selected. Calibration curves and linearity ranges were also determined for each compound. Different extraction systems of the compounds were tested from plant tissues collected from sugarcane (Saccharum officinarum) and eucalyptus (Eucalyptus urophylla platiphylla) plants two days after the glyphosate application at the dose of 720 g a.e. ha-1.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicide; LC-MS/MS; Metabolites; Metabolic profile. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200295 |
| |
|
|
| Signor,Altevir; Pezzato,Luiz Edivaldo; Padilha,Pedro de Magalhães; Padovani,Carlos Roberto; Barros,Margarida Maria. |
| This research evaluated the influence of yeast and zinc on growth performance and metabolic responses of Nile tilapia. Diets were formulated to contain 32.0% digestible protein and 3,240 kcal DE/kg diet and the following autolized yeast (%):zinc (mg/kg)relationships: 0.0:0.0; 0.0:79.5; 2.0:0.0; 0.795:79.5; 2.0:200; 4.0:400; 6.0:600; 12.0:1,200 and 14.0:1,400. It was used 135 fingerlings (7.27 ± 0.19 g), distributed in a complete random design in 27 50-L aquaria and they were fed ad libitum four times a day for 128 days. It was evaluated growth performance and metabolic responses, weight gain, apparent feed conversion; protein efficiency and survival rate; percentage of protein, ether extract, dry weight and ashes in the muscle and in the bones; ammonia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fingerlings; Growth; Metabolism; Metabolites; Minerals. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001200002 |
| |
|
| |
|
| |
|
|
| AKBAR,M.; IQBAL,M.S.; KHALIL,T.. |
| ABSTRACT In agriculture, weeds have inevitable importance because of reducing the crop growth and also affecting food quality. Although, synthetic herbicides are available to combat these weeds but during recent years there is a trend of using ecofriendly herbicides extracted from natural resources. Present investigation is a continuity of the research, which reported a natural herbicidal compound named as Ophiobolin A from a fungus, Drechslera rostrata. The fungus was incubated in a growth medium of known composition (minimal medium) up to 28 days and its metabolites were extracted with organic solvents. The compound showing bioactivity was purified with the help of Reversed Phase High Performance Liquid Chromatography (RPHPLC) and identified with the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chenopodium album; Natural herbicide; Metabolites. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100254 |
| |
|
| |
|
|
| Einali,Alireza; Mazang-Ghasemi,Sahar; Valizadeh,Jafar; Noorozifar,Meisam. |
| ABSTRACT The present work investigated the effects of aqueous extracts of eucalyptus ( Eucalyptus globulus) and elderberry ( Sambucus ebulus) leaves on β-carotene productivity in Dunaliella salina, a green microalga. Leaf extracts from eucalyptus have greater amounts of phenolics and flavonoids, as well as greater ferric reducing antioxidant potential than elderberry. The extracts of both species greatly inhibited growth of algal suspensions. However, chlorophyll and β-carotene concentration increased in cells treated with leaf extracts, and the highest values were detected in 1 % eucalyptus and 2 % elderberry extracts. Fresh weight, total sugar, and protein content significantly increased following exposure of cells to different doses of leaf extracts.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Β-carotene; Dunaliella salina; Eucalyptus; Elderberry; Leaf extracts; Metabolites; Stress. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200180 |
| |
|
|
| Menezes,Erika Bezerra de; Salles,Maria Gorete Flores; Silva,Cleidson Manoel Gomes da; Fernandes,César Carneiro Linhares; Galeati,Giovanna; Araújo,Airton Alencar de; Rondina,Davide. |
| ABSTRACT: The effect of insulin administration on the productive responses of Saanen goats during early lactation was investigated. Ten of 20 adult females were subjected to subcutaneous administration of intermediate-acting insulin (0.14UI/kg body weight) at 2, 9, and 14 days postpartum. Milk yield was measured twice daily for 13 weeks and milk samples were collected to measure protein and fat contents. Plasma levels of progesterone, insulin, non-esterifies fatty acids, glucose and other metabolites were measured. Results showed a significantly increased effect of insulin treatment on the content of milk fat and protein; moreover, milk production in the first and second postpartum weeks were higher than control group. The peak of lactation in the insulin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Goat; Insulin; Milk; Postpartum; Metabolites. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000300652 |
| |
|
| |
|
|
| Lalegerie, Fanny; Lajili, Sirine; Bedoux, Gilles; Taupin, Laure; Stiger-pouvreau, Valerie; Connan, Solène. |
| To cope with the biotic and abiotic stresses experienced within their environment, marine macroalgae have developed certain defence mechanisms including the synthesis of photo-protective molecules against light and particularly harmful UV radiation. The aim of this study was to screen selected red algae, a highly diverse phylogenetic group, for the production of photo-protective molecules. The pigment content and composition (i.e. chlorophyll-a, phycobiliproteins and carotenoids) and the composition of mycosporine-like amino acids (MAAs) were studied in 40 species of red macroalgae collected in Brittany (France), at two distinct periods (i.e. February and July 2017). A high inter-specific variability was demonstrated in terms of pigment content and MAA... |
| Tipo: Text |
Palavras-chave: Algae; Diversity; HPLC; MAAs; Metabolites; Photo-protection; Pigments; Rhodophyta; Screening. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00488/59929/63133.pdf |
| |
|
|
| Vidotto,Francielle Lina; Ribeiro,Geovana Piveta; Tischer,Cesar Augusto. |
| ABSTRACT Because of the widespread occurrence of cellulose in nature, many organisms use glycerol as a source of carbon and energy, so these organisms have drawn attention to the potential use of glycerol bioconversion. The bacteria Gluconacetobacter xylinus, a strictly aerobic strain that performing incomplete oxidation of various sugars and alcohols to cellulose biosynthesis. For this reason, we modify the Hestrim-Schram medium, associating glycerol, glucose and sucrose varying their concentration. The fermentations were performed statically at a temperature of 28˚C for a period of 10 days. The pH, membrane formation, crystallinity and the production of some metabolites of the 4th, 7th and 10th days was evaluated. The results showed a higher yield of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial cellulose; Glycerol; Metabolites; Gluconacetobacter xylinus; Solid state nuclear magnetic resonance; 1H nuclear magnetic ressonance. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100404 |
| |
|
|
| Oliveira, Wagner Dias Coelho de; Silva, Tairon Pannunzio Dias e; Bezerra, Leílson Rocha; Araújo, Marcos Jácome de; Edvan, Ricardo Loiola; Lopes Oliveira, Ronaldo. |
| The aim of this study was to evaluate the protein energetic, enzymatic and mineral profile of Nellore cows during the pregnancy, parturition and postpartum. Fifteen multiparous cows with 4 ± 1 years of age and live weight of 400 ± 50 kg were used at different stages (non-pregnant, in the initial, middle and late pregnancy, at birth, one day postpartum, 30 and 60 days postpartum). Blood collections were performed every 30 days and assayed for the following blood biomarkers: Protein (total proteins, albumin, urea and creatinine), energetic (cholesterol, triglycerides, glucose and beta hydroxybutyrate), mineral (calcium, phosphorus, magnesium) and enzymatic (alkaline phosphatase and aspartate aminotransferase). Calcium had the lowest concentrations (p... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochemistry; Blood; Ketone bodies; Metabolites; Physiology. biochemistry; Blood; Ketone bodies; Metabolites; Physiology.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/49022 |
| |
| Registros recuperados: 26 | |
|
|
|
