A5013094911- Biodiesel Production and Applications
- Fermentation and Sensory Analysis
- Enzyme Catalysis and Immobilization
- Insect Pheromone Research and Control
- Meat and Animal Product Quality
- Microbial Metabolic Engineering and Bioproduction
- Biofuel production and bioconversion
- Agricultural and Food Sciences
- Neurobiology and Insect Physiology Research
- Magnetic and Electromagnetic Effects
- Anaerobic Digestion and Biogas Production
- Moringa oleifera research and applications
- Phytochemistry and Biological Activities
- Insect and Pesticide Research
- Lubricants and Their Additives
- Effects of Environmental Stressors on Livestock
- Insect and Arachnid Ecology and Behavior
- Toxic Organic Pollutants Impact
- Microbial bioremediation and biosurfactants
- Food Chemistry and Fat Analysis
- Regulation of Appetite and Obesity
- Ruminant Nutrition and Digestive Physiology
- Radioactive element chemistry and processing
- Milk Quality and Mastitis in Dairy Cows
- Adipose Tissue and Metabolism
Universidade Federal de Pernambuco
2009-2021
Instituto Nacional do Semiárido
2018
Hospital das Clínicas da Universidade Federal de Pernambuco
2007-2012
University of the Philippines Los Baños
1976
The objective of this study was to compare the physicochemical, thermo-oxidative and nutritional characteristics crude refined buriti oil. Crude oil samples were evaluated for viscosity, relative density, refraction, acidity, free fatty acids, peroxide iodine, lipid oxidation degree by UV-Vis, thermogravimetry, calorimetry, in vitro antioxidant capacity, vitamin A content acids profile. refining process decreased percentage iodine indexes, with greater thermal-oxidative stability, which is...
Abstract With the help of radioactive dilution analysis allowing qualitative and quantitative determination all three presently known juvenile hormones (JH-1 to 3) following seven species four orders were investigated in adult stage: Coleoptera: Tenebrio molitor, Leptinotarsa decemlineata; Orthoptera: Schistocerca gregaria; Blattodea: Blatta orientalis, Leucophaea maderae, Nauphoeta cinerea; Hymenoptera: Apis mellifera. In these 3 only m ethyl (2E...
This work focuses on monitoring the generation of biogas by biochemical methane potential (BMP) assays, commonly used to assess anaerobic biodegradability solid and liquid wastes under controlled conditions. The experiment employed 5 g substrate both refuses (fresh one-year-old wastes), digested with 250 mL inoculum in 1 L flasks as bioreactors (all them triplicate, operating batch conditions at ± 35 ºC). Despite difference age evaluated, there was no significant differences volume (near...
Abstract A method is presented permitting the qualitative and quantitative determination of all three presently known hormones (JH1-3). The based on radioactive isotope dilution, whereby a very small amount tritium-labelled JH-1 added to ether extract particular species. addition permits isolation hormones, because their similar behaviour during chosen work up. was carried out by gas chromatography identification confirmed with help retention-times GC-MS combination. checked using an...
Both the taste and aroma of cachaça, an alcoholic beverage produced by yeast fermentation sugar cane, are influenced metabolites volatiles. The knowledge population dynamics during process will help to establish basis for quality control beverage. In present work, three processes, with differing levels technological sophistication, were studied. Saccharomyces cerevisiae was found be dominant species, but Candida milleri (Candida humilis), Pichia caribbica, guilliermondii Zygosaccharomyces...
Magnetic effects induced in ethanolic fermentation by Saccharomyces cerevisiae strain DAUFPE-1012 were studied during a 24 h exposure to 220 mT steady magnetic fields (SMF) at 23 +/- 1 degrees C, produced NdFeB rod magnets. The magnets attached diametrically opposed (N S) cylindrical tube reactor. biomass growth the reactor culture media (yeast extract + glucose 2%) was monitored measurements of optical density, which correlated cell dry weight. Ethanol concentration and level measured every...
Biomass growth of Saccharomyces cerevisiae DAUFPE-1012 was studied in eight batch fermentations exposed to steady magnetic fields (SMF) running at 23ºC (± 1ºC), for 24 h a double cylindrical tube reactor with synchronic agitation. For every batch, one 220mT flow intensity SMF, produced by NdFeB rod magnets attached diametrically opposed (N S) on tube. In the other tube, without magnets, fermentation occurred same conditions. The biomass culture (yeast extract + glucose 2%) monitored...
Objetivou-se avaliar a influência dos períodos de lactação nas características químicas e físicas do leite cabras Saanen no Brejo Paraibano, Brasil, verificar o efeito manejo rebanho, da higiene ordenha perfil lipídico leite. Vinte animais foram selecionados, constituindo-se quatro grupos 5 (com sem presença macho com procedimentos higiene) para análises amostras coletadas 35, 85 135 dias lactação. Os resultados comprovaram produtividade leiteira satisfatória em lactação, evidenciando...
This study had as aims the extraction, purification and characterization of moringa oil for everyday applications with backing scientific. The average yield was 23.92%, using techniques: mechanical pressing (11.36%) by hexane extraction (35.48%). extracted analysed gas chromatography, revealing a profile 21.5% saturated fatty acids 78.5% unsaturated acids, having oleic acid major component. mixed crude refined in four steps: degumming, neutralization, washing drying. oils were characterised...
BY HIGH PERFORMANCE LIQUID CROMATOGRAPHY.The organic acids (tartaric, malic, citric, lactic and succinic) are de main components responsible for the acidity in wine.This method simultaneous determination of interfering peaks wines can be achieved 16 min.The sample preceded by a dilution filtration step.The chromatographic separation required one reversed phase column, isocratic mobile (acetonitrila, formic acid water) detection wavelength was set at 212 nm.The validation confirmed good...
The objective of this trial was to analyze milk production, composition, fatty acid profile, physiological parameters, and behavior Pitangueiras cows under grazing conditions submitted the presence or absence shade in paddock. environment monitored daily using a meteorological station at research site. A complete randomized experimental design used 20 lactating were allocated paddocks with without shade. Daily productivity did not differ among cows. There also no difference profile...
Mesquite [Prosopis juliflora (SW) D.C.], a perennial tropical plant commonly found in Brazilian semi-arid region, is viable raw material for fermentative processes because of its low cost and production pods with high content hydrolysable sugars which generate many compounds, including ethanol. This study aimed to evaluate the use mesquite as substrate ethanol by Z. mobilis UFPEDA205 submerged fermentation. The fermentation was assessed rate yield ethanol, efficiency very close theoretical...
The MCM-41 mesoporous molecular sieves have attracted a great deal of interest due to their application in adsorption processes, like the removal naphthenic acids, which are directly responsible for acidity and corrosiveness petroleum. objective this work is explore synthesis, characterization, Sr-MCM-41 removing acids from model mixture aviation kerosene (jet fuel) by adsorption. adsorbent was characterized factorial design used determine best operating conditions. characterization results...
The objective of this work was to evaluate the effects manicoba silage use (Manihot glaziovii Muel Arg.) in different roughage:concentrate ratios (30:70; 40:60; 50:50 and 60:40 %) on fatty acids profile milk from Moxotó goats. Eight multiparous goats with approximately 60 post-birth days weigh 44 kg average were used a Double Latin Square four treatments, periods animals. Each period lasted 15 10 adaptation experimental diets 5 collection. results analyses submitted analysis variance (ANOVA)...
To evaluate the effect of local nitroglycerin on viable area a prefabricated flap for vascular implant in rats, and to investigate surgical delay procedure.A femoral pedicle was implanted under skin abdominal wall forty Wistar rats. The animals were divided into four groups ten: group 1 - without procedure nitroglycerin; 2 with procedure, but 3 4 simultaneous nitroglycerin. percentages areas, relation total flap, calculated using AutoCAD R 14.The mean percentage value 8.9% 1. 49.4% 2; 8.4%...
Abstract Diesel‐contaminated soil was treated with Fenton's oxidant, from hydrogen peroxide. Soil samples were collected during the earthmoving of RNEST Oil Refinery (Petrobras). A factorial design 3 evidenced that concentration iron ions [Fe 2+ ] variable most statistically significant effect in all experiments. The oxidation efficiency found to be 57 % total organic carbon (TOC) and 78 polycyclic aromatic hydrocarbon (PAH) removal. Moreover, sum low‐molecular‐weight PAHs on...
Abstract The chemical composition of essential oils extracted from Xylopia frutescens Aubl. (Annonaceae) fruit (collected in Pernambuco, Brazil) was examined by TLC and GC/MS. analysis detected compounds the flavonoid terpenoid groups. GC/MS 23 compounds, which principal components were germacrene D (24.2%), linalool (12.1%), β-pinene (8.0%), cis-sabinene hydrate (7.9%), trans-pinocarveol (7.8%), α-copaene (7.0%) limonene (5.6%). Other constituents found sabinene, m-cymene, 1,8-cineole,...