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Hidrólise ácida de biomassa assistida por ultrassom para obtenção de furfural
(Universidade Federal de Santa Maria, 2017-07-12)
In this work, the applicability of ultrasound (US) for synthesis of furfural from biomass was investigated. Several US systems (baths, probes and a cup horn system) with different frequencies and power were evaluated (from ...
Fermentação em estado sólido assistida por ultrassom para a produção de enzimas de degradação de parede celular
(Universidade Federal de Santa Maria, 2019-08-05)
The agro-industry waste is low cost, high availability and it can be transformed into products of important economic value. The biotransformation of these substrates into compounds with an aggregated value from the solid-state ...
Hidrólise enzimática de bagaço de malte usando tecnologias alternativas visando à obtenção de açúcares fermentescíveis
(Universidade Federal de Santa Maria, 2016-07-26)
This work aimed to study the enzymatic hydrolysis of malt bagasse, using mechanical agitation, ultrasonic probe and supercritical CO2. Enzymatic hydrolysis was performed on granular starch. For this, was used a commercial ...
Emprego do ultrassom para a desemulsificação de petróleos provenientes do pré-sal
(Universidade Federal de Santa Maria, 2020-09-21)
The presence of emulsified water in crude oil is a natural consequence of the formation and the production process, leading to crude oil emulsions in petroleum production. Emulsion separation is necessary for industrial ...
Extração assistida por ultrassom de β-glucanos de Lentinula edodes utilizando solvente eutético e água
(Universidade Federal de Santa Maria, 2022-03-30)
Shiitake is a mushroom rich in β-glucan type polysaccharides, long-chain molecules that have antioxidant properties that are beneficial to human health, in addition to having isolated physical properties of interest to the ...
Avaliação do uso de ultrassom para a conversão de ácido tânico visando à obtenção de ácido gálico
(Universidade Federal de Santa Maria, 2021-11-18)
Tannic acid is a macromolecule belonging to the hydrolysable tannins group, with multiple units of gallic acid linked to a central sugar. This compound is considered to have a low level of biodegradability and, under ...
Otimização da produção e extração de metabólitos com atividade antioxidantes a partir do fungo Botryosphaeria dothidea isolado do bioma Pampa
(Universidade Federal de Santa Maria, 2017-08-17)
In this work the ultrasound was used to increase the production of metabolites with antioxidant activity obtained from the submerged fermentation of the fungus Botryosphaeria dothidea, followed by different extraction ...
Avaliação das características de bio-óleo e biochar produzidos por pirólise a partir de biomassas lignocelulósicas
(Universidade Federal de Santa Maria, 2023-03-09)
Lignocellulosic biomass is considered one of the alternative renewable resources with the
potential to supply the high world energy demand, by reducing dependence on fossil fuels. The
use of this valuable resource as raw ...