Results: 17

Comparison of protein precipitation methods for sample preparation prior to proteomic analysis of Chinese hamster ovary cell homogenates

BACKGROUND: Chinese hamster ovary (CHO) cells are the workhorse for obtaining recombinant proteins. Proteomic studies of these cells intend to understand cell biology and obtain more productive and robust cell lines for therapeutic protein production in the pharmaceutical industry. Because of the great i...

Development and Characterization of Poly-ε -caprolactone Nanocapsules Containing β -carotene Using the Nanoprecipitation Method and Optimized by Response Surface Methodology

Abstract Nanoparticles demonstrate an important role in the protection of bioactive compounds from external factors such as temperature, oxygen and light. In this study, poly-ε-caprolactone (PCL) nanoparticles entrapped β-carotene was produced using the nanoprecipitation method. Firstly, was ev...

Purification of inulinases by changing the ionic strength of the medium and precipitation with alcohols

An. acad. bras. ciênc; 89 (1), 2017
ABSTRACT The present study evaluated the purification of inulinase by changing the ionic strength of the medium by addition of NaCl and CaCl2 followed by precipitation with n-propyl alcohol or iso-propyl alcohol. The effects of the concentration of alcohols and the rate of addition of alcohols in the cru...

Biomineralization of a calcifying ureolytic bacterium Microbacterium sp. GM-1

Background: Biomineralization is a significant process performed by living organisms in which minerals are produced through the hardening of biological tissues. Herein, we focus on calcium carbonate precipitation, as part of biomineralization, to be used in applications for environmental protection, mate...

A simple and efficient method for extraction of Taq DNA polymerase

Electron. j. biotechnol; 18 (5), 2015
Background Thermostable DNA polymerase (Taq Pol ?) from Thermus aquaticus has been widely used in PCR, which was usually extracted with Pluthero's method. The method used ammonium sulfate to precipitate the enzyme, and it saved effort and money but not time. Moreover, we found that 30-40% activity of Taq...

Comparative proteomic analysis of different developmental stages of the edible mushroom Termitomyces heimii

Biol. Res; 47 (), 2014
BACKGROUND: Termitomyces heimii is a basidiomycete fungus that has a symbiotic relationship with termites, and it is an edible mushroom with a unique flavour and texture. T. heimii is also one of the most difficult mushrooms to cultivate throughout the world. Little is known about the growth and developm...

Prevalência da macroprolactinemia entre 115 pacientes com hiperprolactinemia
Prevalence of macroprolactinemia among 115 patients with hyperprolactinemia

Macroprolactinemia caracteriza-se pelo predomínio no soro de uma prolactina (PRL) de alto peso molecular e baixa atividade biológica que não requer tratamento. A prevalência de macroprolactinemia foi avaliada em 115 pacientes consecutivos com hiperprolactinemia. Entre eles, 19 (16,5 por cento) tinham...

Factores asociados a la remisión de crisis epilépticas: Hospital Belén de Trujillo (1997-2000)
Factors associated to remission of seizures: Belen Hospital of Trujillo (1997-2000)

Introducción: La información referente al pronóstico de la epilepsia es heterogénea. Estudiamos retroprospectivamente los factores asociados a la remisión de crisis epilépticas en los pacientes del Servicio de Neurología del Hospital Belén de Trujillo. Método: Se entrevistaron a 80 epilépticos ...