A5062060563- Biodiesel Production and Applications
- Insect Utilization and Effects
- Heavy Metals in Plants
- Biochemical Analysis and Sensing Techniques
- Agricultural and Food Sciences
- Electrochemical Analysis and Applications
- Meat and Animal Product Quality
- Coffee research and impacts
- Analytical chemistry methods development
- Animal and Plant Science Education
- Environmental Sustainability in Business
- Plant biochemistry and biosynthesis
- Enzyme Catalysis and Immobilization
- Food Chemistry and Fat Analysis
- Aquatic Ecosystems and Phytoplankton Dynamics
- Analytical Chemistry and Sensors
- Microbial bioremediation and biosurfactants
- Tea Polyphenols and Effects
- Analytical Chemistry and Chromatography
- Biofuel production and bioconversion
- Catalysis and Hydrodesulfurization Studies
- Lignin and Wood Chemistry
- Advanced Chemical Sensor Technologies
- Water Quality and Pollution Assessment
- Electrochemical sensors and biosensors
Universidade Estadual de Santa Cruz
2012-2024
Latin American Sepsis Institute
2020
Universidade do Estado da Bahia
2020
Exact Sciences (United States)
2015
Universidade Federal da Bahia
1991-2009
PARAMETERS AND ANALYTICAL METHODS.The establishment of quality standards for biodiesel was a key step to win the confidence market and automotive industry, thus ensuring success new fuel.In this review are presented standard methods other analytical suggested analysis biodiesel.The were divided into groups according information that may be provided on contaminants from raw material production process, molecular structures its degradation during storage.
PROGRESS AND CHALLENGES.Microalgae biomass has been described by several authors as the raw material with greatest potential to meet goals of replacing petroleum diesel biodiesel while not competing arable land suitable for food production.Research groups in different countries are seeking most appropriate production model productivity, economic viability and environmental sustainability.This review focused on recent advances challenges
In this study the mixed oxides ZrO2-SiO2, were synthesized by sol-gel method with a molar ratio of 95:5 (Si/metal) and characterized X-ray diffraction, absorption-desorption N2, Fourier transform infrared spectroscopy, thermal gravimetric analysis, temperature-programmed desorption ammonia, acidity test titration. The materials, which are amorphous to X-rays, composed mixture micro- mesopores. They show higher acid strength than separate oxides, indicating that ZrO2 is highly dispersed in...
The phytoremediation potential of autochthonous aquatic plants has been increasingly explored. This study investigated the use macrophytes found in natural ecosystems southern coast state Bahia, Brazil, for treatment dairy wastewater (DWW) using experimental systems floating constructed wetland type. Four species have tested platforms made from PET bottles. chemical oxygen demand (COD), biochemical (BOD), total solids (TS), pH, and temperature DWW were analyzed 15 days. On fifth day, a 74.8%...
The State of Bahia, Brazil, stands as the predominant global producer guarana, which is recognized for its seeds’ caffeine-rich composition. This study aimed to determine concentrations methylxanthines (theobromine, caffeine, and theophylline) phenolic compounds (catechin epicatechin) in guarana leaves, seeds, pericarps collected from various producing cities Bahia. High-performance liquid chromatography analysis was conducted, data set subjected principal component (PCA) evaluation....
We report here on the characterization of a cDNA library from seeds Jatropha curcas L. at three stages fruit maturation before yellowing. sequenced total 2200 clones and obtained set 931 non-redundant sequences (unigenes) after trimming quality control, ie, 140 contigs 791 singlets with PHRED ≥10. found low levels sequence redundancy extensive metabolic coverage by homology comparison to GO. After 5841 ESTs 13193 reads GenBank KEGG, we identified tags nucleotide variations among J....
Abstract The reaction between lead(II) and 2-(2-Thiazolylazo)-p-Cresol(TAC) in the presence of TERGITOL NPX (4 mg/ml) at an apparent pH 9.0–10.0 results intensely colored complex which is stable for least 4 hr. composition 1:2 cation: TAC log formation constant 11.92 ± 0. 40. Beer's law obeyed up to 6.0μg.ml−1 650nm. molar absorptivity 650 nm 2.07 × 104 1. mole−1.cm−1 detection limit was obtained as 10.0 ng.ml−1 lead(II). method applied determination copper-base alloy.
WAY FOR MULTIELEMENT DETERMINATIONS.This paper present an overview of way covered for the spectrometry atomic absorption (AAS), tracing a line historical events in its development and establishment as multielement technique.Additionally, efforts carried by through several researchers search instrumental evolution, advances, advantages, limitations, trends this approach are related.Several works focusing analytical applications cited employing simultaneous determination flame (FAAS) and/or...
In the present work, a simple and high-throughput analytical procedure based on ultrasound-assisted extraction with diluted acid was proposed for determination of Ca, Mg, K, P, S, Fe, Cu Mn in guarana samples using inductively coupled plasma optical emission spectrometry. Two multivariate approaches were employed optimization procedure: mixture Doehlert designs. The best experimental conditions established by application multi-response function (overall desirability). An extractor medium...
Nutrientes inorgânicos dissolvidos, nitrogenio total (NT) e fosforo (PT), clorofila-a salinidade foram analisados no estuario do Rio Cachoeira antes depois da operacao de uma estacao tratamento esgoto (ETE). As concentracoes nutrientes dissolvidos apresentaram grande variacao, com valores desde abaixo limite deteccao a > 45 μM para silicato, 30 o amoniacal 28 nitrito. nitrato baixas. A variou 60 μg . L-1. razao molar inorgânico dissolvido (NID:PID) foi maior que Redfield (N:P = 16:1) ETE,...
Candida kefyr has been considered both a food-spoiling agent and type of yeast with fermentation properties. In this study, the authors have evaluated antimicrobial activity coconut oil-in-water emulsion associated to presence C. kefyr. Fresh kernels were used obtain emulsion, sterile by decantation, oil means heating process. Commercial virgin was also used. Agar diffusion, minimal inhibitory concentration bactericidal (MIC/MBC) techniques employed evaluate against E. coli S. epidermidis....
1Biological Science Department, State University of Santa Cruz, Ilheus, Bahia, Brazil 2Pharmaceutical Graduate Program, Federal Rio Grande do Sul, Porto Alegre, 3Basic and Instrumental Studies Southeast Itapetinga, 4Exact Technological Sciences
RESUMO A hidroxiapatita tem se destacado entre os materiais cerâmicos devido a sua versatilidade estrutural, pois permite substituição do Ca2+ ou PO43-da estrutura possibilitando diversas aplicações. utilização da como suporte e, catalisador recebido destaque tema de pesquisa. Com isso, o objetivo deste trabalho foi síntese, modificação e caracterização para aplicação em reação esterificação. obtida pelo método precipitação modificada por troca iônica no estado sólido, utilizando Zn(NO3)2...