Pre Purification
Mostrando 1-12 de 128 artigos, teses e dissertações.
-
1. Monitoramento da carga viral de SARS-CoV-2 em águas residuais na cidade de Goiânia: epidemiologia baseada em esgoto e um sistema de alerta precoce para COVID-19
COVID-19 is currently the most critical disease in the world. Thus, several tools have been used in the last two years to contain the spread of SARS-CoV-2. In this perspective, Wastewater-Based Epidemiology (WBE) provides valuable data by including symptomatic, pre-symptomatic, and asymptomatic individuals and anticipating clinical cases. For 37 weeks, the S
Química Nova. Publicado em: 2022
-
2. AVALIAÇÃO DE NANOTUBOS DE CARBONO FUNCIONALIZADOS VISANDO O DESENVOLVIMENTO DE MÉTODOS DE PRÉ-CONCENTRAÇÃO DE ÍONS METÁLICOS E DETERMINAÇÃO POR TÉCNICAS ESPECTROMÉTRICAS E ELETROANALÍTICAS
This review focuses on the use of functionalized carbon nanotubes (CNTs) on the development of preconcentration methods with substantial contributions on selectivity and sensitivity for metal ions determination. CNTs have been usually employed in the development of preconcentration/speciation coupled to spectroanalytical techniques for ions determination at
Quím. Nova. Publicado em: 2020-09
-
3. Comparisons of the active components in four unripe raspberry extracts and their activites
Abstract Dried unripe raspberry of Rubus chingii, were prepared as the following four extracts: unpurified raspberry extract (URE), purified raspberry extract (PRE), URE after high temperature-high pressure (UPE-H, HTHP), and PRE after HTHP (PRE-H). The total polyphenolic contents (TPCs) and total flavonoid contents (TFCs) of the four extracts, as assessed b
Food Sci. Technol. Publicado em: 10/10/2019
-
4. Produção e purificação integrada de protease fibrinolítica de Mucor subtilissimus UCP 1262
RESUMO As enzimas fibrinolíticas podem ser obtidas de micro-organismos por meio de processos fermentativos. O presente trabalho teve como objetivo avaliar a produção e extração integrada da protease fibrinolítica de Mucor subtilissimus UCP 1262 usando sistema de duas fases aquosas (SDFA). O processo integrado foi realizado para avaliar a produção, pa
Arq. Bras. Med. Vet. Zootec.. Publicado em: 06/06/2019
-
5. Use of chitosan in the remediation of water from purification of biodiesel
Abstract This article evaluates the efficiency of the degradation of pollutants present in water from the purification of biodiesel, characterized by high content of chemical oxygen demand (COD), suspended solids (SS), oils and greases, methanol, soap, and glycerol. The treatment process proposed was of the photo-Fenton type using iron immobilized in chitos
Polímeros. Publicado em: 29/11/2018
-
6. Development of an L-Lysine Enriched Bran for Animal Nutrition via Submerged Fermentation by Corynebacterium glutamicum using Agroindustrial Substrates
L-Lysine is an essential aminoacid added as supplement for animal feed. The aim of this work was to produce an L-Lysine enriched bran using Brazilian agroindustrial byproducts. Both the raw material costs and purification steps were minimized. Firstly, medium composition for the growth of Corynebacterium glutamicum ATCC 21799 was optimized targeting enhanced
Braz. arch. biol. technol.. Publicado em: 06/05/2016
-
7. Optimization of the RNeasy Mini Kit to obtain high-quality total RNA from sessile cells of Staphylococcus aureus
Biofilm formed by Staphylococcus aureus is considered an important virulence trait in the pathogenesis of infections associated with implantable medical devices. Gene expression analyses are important strategies for determining the mechanisms involved in production and regulation of biofilm. Obtaining intact RNA preparations is the first and most critical st
Braz J Med Biol Res. Publicado em: 2015-12
-
8. RECOVERY OF CYCLODEXTRIN GLUCANOTRANSFERASE (CGTase) USING IMMOBILIZED METAL CHELATING AFFINITY CHROMATOGRAPHY
Abstract Immobilized metal affinity chromatography (IMAC) was chosen as a method of purification for the recovery of CGTase from E. coli homogenate. E. coli harbouring the Bacillus sp. G1 gene expressed extracellularly secreted CGTase into ampicillin supplied LB broth. Culture was pre-purified using SnakeSkin dialysis tubing (3.5 MWCO) with an enzyme activit
Braz. J. Chem. Eng.. Publicado em: 2015-03
-
9. Preparative separation of polyphenols from artichoke by polyamide column chromatography and high-speed counter-current chromatography
An efficient method for the rapid separation and purification of polyphenols from artichoke by polyamide column chromatography in combination with high-speed counter-current chromatography (HSCCC) was successfully built. The crude ethanol extracts from dry artichoke were first pre-separated by polyamide column chromatography and divided in two parts as sampl
Quím. Nova. Publicado em: 2013
-
10. Riscos percebidos pelo consumidor e estratégias para minimizá-los no consumo de saladas de horataliças cruas em restaurantes à la carte / Risks perceived by the consumer and strategies to minimize them in the consumption of raw vegetable salads in full-service restaurants
The standard diet of the Brazilian population has been characterized, amongst other aspects, by a reduced consumption of vegetables and by an increasing number of meals eaten away from home, and hence the use of food services could represent an opportunity to include a variety of vegetables in the diet. Consumer behavior when eating away from home has been l
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/05/2012
-
11. Isolamento de uma quitinase extraída do cefalotórax do camarão marinho Litopenaeus schmitti (BURKENROAD, 1936) : avaliação de suas atividades antimicrobiana e larvicida
As quitinases são enzimas envolvidas na degradação da quitina e estão presentes em uma gama de organismos, inclusive os que não contêm quitina, tais como bactérias, vírus, plantas e animais desempenhando importantes papeis fisiológicos e ecológicos. A quitina é hidrolisada por um sistema quitinolítico classificado como: Endo-quitinases, Exo-quiti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/06/2011
-
12. Produção de nisina em leite desnatado diluído por Lactococcus lactis subsp. lactis ATCC 11454 em biorreator / Nisin production in diluted skimmed milk utilizing Lactococcus lactis subsp. lactis ATCC 11454 in bioreactor
Nisin is a natural antimicrobial peptide produced by Lactococcus lactis subsp. lactis ATCC 11454 during its exponential growth phase. The bacteriocin is used as natural food preservative due to its antimicrobial activity against Gram-positive bacteria and outgrowth of spores. This property allows its application in numerous fields (pharmaceutical, veterinary
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011