A5005682527- Biodiesel Production and Applications
- Agricultural and Food Sciences
- Phytochemicals and Antioxidant Activities
- Catalysis and Hydrodesulfurization Studies
- Advances in Cucurbitaceae Research
- Aquaculture Nutrition and Growth
- Hibiscus Plant Research Studies
- Natural Antidiabetic Agents Studies
- Essential Oils and Antimicrobial Activity
- Chemistry Education and Research
- Petroleum Processing and Analysis
- Chemical Synthesis and Reactions
- Spectroscopy and Chemometric Analyses
- Analytical Chemistry and Chromatography
- Plant biochemistry and biosynthesis
- Enzyme Catalysis and Immobilization
- Meat and Animal Product Quality
- Adsorption and biosorption for pollutant removal
- Wound Healing and Treatments
- Edible Oils Quality and Analysis
- Thermochemical Biomass Conversion Processes
- biodegradable polymer synthesis and properties
- Hydrogels: synthesis, properties, applications
- Fatty Acid Research and Health
- Wastewater Treatment and Reuse
Universidade Tecnológica Federal do Paraná
2014-2023
Biodiesel is being increasingly used as an alternative energy source to reduce the dependence on derived petroleum fuels. However, sources of raw material for its production may contain substances susceptible oxidation that are incorporated into biodiesel. As minimize and even inhibit reaction, antioxidant extracts from senna leaves, blackberries hibiscus flowers were added biodiesel, which present in their composition (structures) phenolic compounds capable inhibiting formation free...
Residual oils were characterized according to their physicochemical properties, i.e. acidity, iodine value, peroxide value and saponification number, evaluate the degradation level viability for biodiesel production. The methyl esters of fatty acids (FAME) from samples residual bovine, chicken soybean quantified by using four transesterification methods, acidic basic catalysis and, gas chromatography with flame ionization detector (GC–FID). Methods that used at a lower temperature most...
Hydrogels based on alginate and tanfloc (a cationic biopolymer obtained from natural condensed tannins) were successfully prepared. Tanfloc (TN) presents high aqueous solubility at pHs lower than 10; it contains substituted amino sites molar weight of ca. 600,000gmol-1. A factorial design (22) was used to optimize the yield alginate/tanfloc polyelectrolyte complexes (PECs). Dialysis recovered overplus (AG) no complexed with TN. These materials characterized by thermal analyses (TGA/DTG DSC),...
This work experimentally evaluated the pyrolysis of sugarcane bagasse in a fixed bed reactor order to obtain products useful energy applications. The raw material was characterized understand its behaviour during thermal degradation process. effects operating conditions on mass yields bio‐oil, biochar, and non‐condensable gases were investigated. variables studied temperature (400 700 °C), particle size (<0.5 mm, 0.5–1.0 1.0–1.41 mm), heating rate (5, 10, 15 °C/min), nitrogen flow (50,...
The aim of this work was to improve the nutritional quality Nile tilapia meat through enriched diets with conjugated isomers linolenic acid from tung oil. transfer process fatty acids (CFAs) into fish muscle tissue evaluated by gas chromatography-flame ionization detection (GC-FID) and easy ambient sonic-spray mass spectrometry (EASI-MS).The results showed that were transferred diet for tilapia. Conjugated linoleic biosynthesis also observed after 10 days. Other important such as...
Domestic production of biodiesel is becoming increasingly widespread, via transesterification processes; it generates a significant amount glycerol that can become available in various sectors national industry providing has level compatible purity.This paper presents purification route for glycerin obtained alkaline methyl waste oils and soybean animal origin from commercial rotissery processes.The residual were characterized as acid , peroxide, saponification iodine values, well viscosity...
A quantidade de resíduos gerados durante o beneficiamento do café no Brasil (principalmente casca) representa aproximadamente 50% da produção. Visando diminuir este problema, objetivo deste trabalho foi obter diferentes extratos das cascas café, avaliar sua composição e atividade antimicrobiana. Utilizando extrações por Soxhlet, com solventes polaridades seletividades analisando estes Cromatografia Gasosa acoplada à Espectrometria Massas Espectroscopia Infravermelho Transformada Fourier,...
A producao nacional de biodiesel em crescente expansao, atraves processos transesterificacao, gera uma quantidade expressiva glicerol que pode ser aproveitado diversos setores da industria desde apresente um teor pureza compativel. Este trabalho apresenta rota purificacao glicerina obtida processo transesterificacao alcalina metilica oleos residuais soja e origem animal obtidos assadores comerciais. Os foram caracterizados quanto a indice acidez, peroxido, saponificacao iodo, alem...
Biodiesel is considered a renewable energy source, making it possible to reduce the use of fossil fuels and emissions gasses derived from sulfur oxides. It one alternatives diesel due its similar physicochemical properties. However, this biofuel contains unsaturated methyl esters in composition, which makes susceptible oxidation. Among factors that alter chemical stability contamination by transition metal ions. This study aimed evaluate influence Cu2+, Fe2+ Fe3+ ions oxidative biodiesel...
The objective of this study was evaluate the effects jelly fruit extracts as a natural antioxidant in soybean oil subjected to an accelerated storage test and optimize best extraction conditions compounds (Solanum gilo Radi) dehydrated at temperatures 40, 60 80 100 o C, thus influence temperature on activity.The activity determined by DPPH radical scavenging assay total phenolic using Folin-Ciocalteu method.The that provided most extract with were °C 5.0 g flour, mL methanol/water 20% (v/v)...
Abstract In this article, UiO‐66 metal–organic frameworks containing structural modifications were synthesized and characterized to increase acidic surface behaviour for application in heterogeneous acid catalysis produce fatty ethyl esters (FAEE) from degummed soybean oil. The solvothermal route UiO‐66, the post‐synthesis done by sulphation reaction strong medium. materials physicochemical techniques such as X‐ray diffraction (XRD), C‐ray fluorescence (XRF), scanning electron microscopy...
Biodiesel contains esters in its composition which make it susceptible to oxidation.Among the factors that cause this reaction is contamination with metal ions.In present work, was analyzed biodiesel samples obtained from a mixture containing 39.0% m/m soybean oil, 22.0% beef tallow and poultry fat using methyl route.Copper ions were added evaluate catalytic action oxidation reaction, presence absence of rosemary extract.During 192 h assay, copper, without extract, showed shorter induction...
MATERIALS.Innovation and multidisciplinarity are the way to accelerate improvements in education, as well search for contextualized content.The between chemistry Biology, allows explore various contents, one of them is environment.Works that offer alternatives simpler experiments great help professors.In this context, study suggests a didactic sequence using easily accessible materials address chemical Microbiological concepts soil.The proposal aimed at high school students early...
Óleos de soja residuais fritura, coletados em estabelecimentos comerciais e domésticos, foram caracterizados quanto ao índice acidez, peróxido, saponificação quantificados aos ácidos graxos por Cromatografia Gasosa Detecção Ionização Chama (CG-DIC). Após essa análise preliminar submetidos a reação transesterificação processo catalítico ácido, utilizando H2SO4 (1,25%), NH4Cl (0,20%) AlCl3 (0,25%) metanol anidro (razão molar 6:1), sob refluxo 1 h, sendo purificação, lavagem com água filtração...
The Catingueiro, Cristalino and Ligeiro Rivers, present in the eastern region of Cianorte, Paraná, Brazil, are under constant influence industrial effluents agrochemicals. In 2022, public supply this municipality will be made by waters River, sites predicted for abstraction close to confluence Catingueiro River with River. We evaluated two periods 2020, based on different parameters, water quality at sites, P1 P2 (P2, upstream confluence), one site, P3, P4 P5 (P5, downstream confluence)....