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Avaliação do híbrido CTA-MCM-41, modificado por poliestireno, na transesterificação catalítica de monoéster
(Universidade Federal de São Carlos, 2013-09-29)
The present work shows a new technique applied to the synthesis of heterogeneous catalysts MCM-41 containing basic alkylammonium cations and the study of stability in the transesterification reactions of monoesters. MCM-41 ...
Análise da secagem convectiva de folhas de manjericão (Ocimum basilicum L.)
(Universidade Federal de São Carlos, 2013-03-19)
Convective drying of leaves involves heat and mass transfer in packed-beds of deformable material, since the leaves shrink significantly when the moisture is removed. Therefore, the packing structure changes over time, and ...
Óxidos mistos de magnésio e alumínio contendo lítio e cálcio como catalisadores para transesterificação etílica
(Universidade Federal de São Carlos, 2013-03-08)
This work deals with the investigation on the production of heterogeneous catalysts of base surface properties applied for ethylic transestérification, aiming the biodiesel production. In the first and second chapters of ...
Produção de penicilina G acilase por organismos geneticamente modificados
(Universidade Federal de São Carlos, 2013-09-17)
Penicillin G acilase (PGA) is a key enzyme in the industrial production of β-lactamic antibiotics. In this work, it was studied the production of PGA from Escherichia coli by recombinant E. coli and from Bacillus ...
Síntese enzimática de ésteres catalisada por lipases imobilizadas em diferentes suportes
(Universidade Federal de São Carlos, 2013-03-22)
Lipases are enzymes of great biotechnological relevance. Besides its natural function (hydrolysis of triglycerides), they are capable of catalyzing regio- and enantioselective hydrolysis and synthesis of numerous esters. ...
Análise do efeito da composição química na secagem de pasta em leito de jorro
(Universidade Federal de São Carlos, 2013-03-11)
In the process of paste drying in spouted bed, the paste is submitted to the system, changes in rheological properties occur, a powder is formed and collected by a cyclone. Currently, various pastes have been tested and ...
Propriedades da sílica CTA-MCM-41 contendo metacrilatos e seu emprego na transesterificação de monoéster
(Universidade Federal de São Carlos, 2013-03-07)
The search for clean and renewable fuels has aroused great interest in the industry and scientific community with the growing demand for energy. The transesterification reaction of triglycerides is one way of achieving a ...
Hidrólise enzimática dos polissacarídeos do café
(Universidade Federal de São Carlos, 2013-08-29)
Instant coffee is one of the main products generated by food industry worldwide, consisting of solubilized fraction from roasted and grounded coffee by heat treatment in two steps: thermal extraction at 125 0C, followed ...
Aplicação de técnicas de modelagem e simulação para a produção de etanol de segunda geração
(Universidade Federal de São Carlos, 2013-09-20)
The use of fossil fuels has a significant impact on the environment, making biofuels a renewable and friendly alternative. Brazil, as one of the leading producers of sugar and ethanol, generates as main residue sugar cane ...
Extração de cefamicina C por sistema de duas fases aquosas e purificação por troca iônica
(Universidade Federal de São Carlos, 2013-04-26)
Cephamycin C is a β-lactam antibiotic that belongs to the cephalosporins. This antibiotic stands out from other cephalosporins because it has activity against gram-negative bacteria and for being resistent to ...