The influence of broiler carcass scalding conditions on chicken breast meat quality parameters was investigated. Two hundred and seventy Cobb chickens from 42 to 48 days old were slaughtered according the standard industry practice scalded in five temperature/time combinations-T1, 54°C/210 s; T2, 55°C/180 T3, 56°C/150 T4, 57°C/120 T5, 58°C/90 s. Scalding temperature increase resulted higher values external ventral lightness protein functionality reduction-determined by emulsification...

Abstract Transformation of biomass into renewable energy products is currently one the most promising technologies for dropping dependence on fossil fuels. Biodiesel production may improve with use heterogeneous catalysts, such as zeolites. In this work, computational calculations in conjunction thermal analysis (TGA), evolved gases (EGA) and IR spectroscopic studies were used order to obtain a more detailed information adsorption mechanism involved rate‐determining step esterification...

Solar Cells Consisting of TiO 2 / Nb O 5

Cellulose nanofibers (CNF) have been applied in composite systems due to the abundance of raw material, excellent mechanical and thermal properties.In this work, CNF was prepared from agroindustrial waste used specified amounts polyvinyl alcohol (PVA) composites.The FTIR spectra CNF, chemically purified cellulose (CPC) Cassava Agro-industrial Waste (CAW) indicate removal hemicellulose lignin.The increase crystallinity phase observed, by XRD analysis neither is observed transition I...

Different rice cultivars have been developed in order to obtain grains with optimal cultivation and compositional characteristics, which affect their potential applications. Therefore, the characterization of these different is required. In present study, white bran from BRS AG, Pampa, 358 provided by EMBRAPA were characterized physicochemical means, infrared spectroscopy (FTIR-ATR), thermal analyses. The moisture, lipid, ash contents did not differ among cultivars. cultivar Pampa exhibited...

Abstract This study evaluated the prednisone removal from aqueous solutions using adsorption by an activated carbon of vegetal origin (VAC). A central composite rotatable design (CCRD) and response surface methodology (RSM) were used to verify influence parameters: pH, adsorbent dose concentration in a batch process. Among analyzed parameters, only statistically significant (α = 0.05) critical values obtained dose: 1.87 g/L, pH 7.56 concentration: 3.66 mg/L with 77.51% VAC. The kinetic...

Sustainable natural product-based microstructured systems and biopolymers are strong candidates for use in crop protection. Lignin gelatin microcapsules loaded with orange essential oil were developed spray-drying order to enhance its potential. We evaluated the microparticle controlled release mechanisms, biological effects, structural thermal properties. A quantitative method using headspace-gas chromatography was of oils. Controlled studies showed a linear relationship between biopolymer...

The composites of poly (butylene adipate co-terephthalate) / (lactic acid) (PBAT/PLA) blend and montmorillonites functionalized using imidazole-derived ionic liquids with different carbon chain sizes (butyl, octyl, dodecyl) proved to be a promising alternative for improving the thermal mechanical properties polymer blend. Functionalization by was confirmed increasing basal spacing, spectroscopical analysis evidence. composite synthesis carried out casting technique generating homogeneous...

Eugenol antioxidant and antibacterial properties have suggested its use as a natural preservative for food matrices. application is compromised due to high volatility sensibility external agents, such light, heat, oxygen, moisture. Thus, microencapsulation viable increase the eugenol stability. Results showed that carrageenan combined with rice protein bovine albumin allow high-quality microcapsules. These materials show excellent properties, favoring microcapsules in This study aimed...

As células fotovoltaicas constituídas de filmes finos óxidos metálicos são promissoras para a conversão energia solar em elétrica devido ao custo reduzido e as vantagens ambientais. O objetivo deste trabalho é produção base estanho pelo método Pechini visando à aplicação solares. Os obtidos foram caracterizados por Microscopia Eletrônica Varredura (MEV), Espectroscopia Energia Dispersiva (EDS), Difração Raios X (DRX) Impedância Eletroquímica (EIE). resultados MEV EDS indicaram que resinas...

Abstract not Available.

A fibroina da seda é um biopolímero natural proveniente de Bombyx mori L. (bicho seda) que possui excelente estabilidade térmica e resistência mecânica. Parte deste biopolimero rejeitada no processo industrial devido a escolha casulos viáveis para produção qualidade. O objetivo dessa pesquisa foi reaproveitar o B. produzir sistemas, processados por casting, misturas poliamida 6 com nanotubo carbono funcionalizado carboxila fibroina. filme polimérico obtido utilizando ácido fórmico como...

Este trabalho objetivou avaliar o processo oxidativo do biodiesel de macaúba, na ausência e presença dos antioxidantes butil hidroxitolueno (BHT) β-naftol. Foram preparadas amostras com 0, 100, 500, 1000 5000 ppm BHT que foram submetidas ao teste degradação térmica por um período 6 horas a 150ºC em estufa 65ºC 30 dias. Amostras β-naftol preparas acelerado. Todas as analisadas através índices acidez, peróxido, iodo espectroscopia infravermelho. Os resultados demonstraram conseguiu minimizar...

Partially hydrogenated soybean oil and palm olein are oils that widely used in the food industry.Continuous contact with air may cause changes of triglycerides chemical structure, to eventually produce substances lower molar masses be toxic mammals.This study aimed determine kinetic parameters for thermal oxidation these their residual from pre-frying industrial step on preparing breaded chicken meat.The main reactions were followed by thermogravimetry (TG) differential scanning calorimetry...