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Xylo-oligosaccharides from lignocellulosic materials: Chemical structure, health benefits and production by chemical and enzymatic hydrolysis
(2013-04-01)
Currently, there is worldwide interest in the technological use of agro-industrial residues as a renewable source of food and biofuels. Lignocellulosic materials (LCMs) are a rich source of cellulose and hemicellulose. ...
Avaliação do pré-tratamento acalino na hidrólise enzimática dos resíduos da palha de carnaúba
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia Química, 2017-10-26)
The carnauba (Copernicia prunifera) is a typical Brazilian northeast palm tree whose main economic activity is the extraction of wax. This activity presents a great generation of residue rich in cellulose, in which it has ...
Optimization of cello-oligosaccharides production by enzymatic hydrolysis of hydrothermally pretreated sugarcane straw using cellulolytic and oxidative enzymes
(2020-10-01)
Enzymatic hydrolysis of lignocellulosic biomass accounts for 20–30% of the total cost of second-generation bioethanol production and many efforts have been made in recent years to overcome the high cost of enzymes. Using ...
Efficiency of enzymatic and non-enzymatic catalysts in the synthesis of insoluble polyphenol and conductive polyaniline in water
(Elsevier Science Sa, 2006-04)
The present work analyzes the potential use of white-rot fungi (WRF) and hematin for phenol and aniline polymerization, as a low-cost alternative to horseradish peroxidase (HRPC). The objective is to evaluate the capability ...
Two-step enzymatic strategy for the synthesis of a smart phenolic polymer and further immobilization of a β-galactosidase able to catalyze transglycosydation reaction
(Elsevier Science, 2018-10)
A rapid and efficient enzymatic procedure for the preparation of an immobilized β-galactosidase has been described. In a first step, soybean peroxidase was used to catalyze the polymerization of a strategically activated ...
Enzymatic and chemical synthesis of new anticoagulant peptides
(American Chemical Society, 2018-09)
In this study we report the enzymatic synthesis of N-α-[Carbobenzyloxy]-Tyr-Gln-Gln (Z-YQQ), a new anticoagulant tripeptide. It was obtained using phytoproteases from the stems and petioles of Asclepias curassavica L. as ...
Kinetic analysis of enzymatic esterification of fatty acids and ethanol
(Elsevier, 2007-08-08)
The esterification of oleic acid and ethanol with immobilised lipase in a solvent-free media is presented in this work. The reaction has been carried out at a laboratory scale in a stirred tank reactor operating batchwise. ...
Characterization of commercial cellulases and their use in the saccharification of a sugarcane bagasse sample pretreated with dilute sulfuric acid
(SPRINGER HEIDELBERG, 2011)
This study aimed to correlate the efficiency of enzymatic hydrolysis of the cellulose contained in a sugarcane bagasse sample pretreated with dilute H(2)SO(4) with the levels of independent variables such as initial content ...
The roles of xylan and lignin in oxalic acid pretreated corncob during separate enzymatic hydrolysis and ethanol fermentation
(ELSEVIER SCI LTD, 2010)
High yields of hemicellulosic and cellulosic sugars are critical in obtaining economical conversion of agricultural residues to ethanol. To optimize pretreatment conditions, we evaluated oxalic acid loading rates, treatment ...