Results: 20

Heterologous expression of a rice metallothionein isoform (OsMTI-1b) in Saccharomyces cerevisiae enhances cadmium, hydrogen peroxide and ethanol tolerance

Braz. j. microbiol; 48 (3), 2017
Abstract Metallothioneins are a superfamily of low-molecular-weight, cysteine (Cys)-rich proteins that are believed to play important roles in protection against metal toxicity and oxidative stress. The main purpose of this study was to investigate the effect of heterologous expression of a rice metallot...

High-temperature ethanol production using thermotolerant yeast newly isolated from Greater Mekong Subregion

Braz. j. microbiol; 48 (3), 2017
Abstract The application of high-potential thermotolerant yeasts is a key factor for successful ethanol production at high temperatures. Two hundred and thirty-four yeast isolates from Greater Mekong Subregion (GMS) countries, i.e., Thailand, The Lao People's Democratic Republic (Lao PDR) and Vietnam wer...

Bioethanol strains of Saccharomyces cerevisiae characterised by microsatellite and stress resistance

Braz. j. microbiol; 48 (2), 2017
Abstract Strains of Saccharomyces cerevisiae may display characteristics that are typical of rough-type colonies, made up of cells clustered in pseudohyphal structures and comprised of daughter buds that do not separate from the mother cell post-mitosis. These strains are known to occur frequently in fer...

Estudos estruturais e funcionais de Tsa1 de Saccharomyces cerevisiae: um modelo biológico para o estudo de inibidores de crescimento celular para leucemia linfoide aguda

As peroxirredoxinas (Prx) são enzimas antioxidantes que se destacam pela capacidade de decompor uma grande variedade de hidroperóxidos com elevada eficiência (106-108M-1s-1), mantendo essas moléculas em níveis adequados à homeostase celular. Entretanto, já foi demonstrado que em diversos tipos tum...

Production, purification and characterization of recombinant human antithrombin III by Saccharomyces cerevisiae

Electron. j. biotechnol; 19 (4), 2016
Background: Antithrombin III (ATIII) is a protein that inhibits abnormal blood clots (or coagulation) by breaking down thrombin and factor Xa. ATIII helps to keep a healthy balance between hemorrhage and coagulation. The present work demonstrated the production, purification and characterization of recom...

Bacteria isolated from Korean black raspberry vinegar with low biogenic amine production in wine

Braz. j. microbiol; 47 (2), 2016
Abstract A high concentration of histamine, one of the biogenic amines (BAs) usually found in fermented foods, can cause undesirable physiological side effects in sensitive humans. The objective of this study is to isolate indigenous Acetobacter strains from naturally fermented Bokbunja vinegar in Korea ...

Sortin2 enhances endocytic trafficking towards the vacuole in Saccharomyces cerevisiae

Biol. Res; 48 (), 2015
BACKGROUND: A highly regulated trafficking of cargo vesicles in eukaryotes performs protein delivery to a variety of cellular compartments of endomembrane system. The two main routes, the secretory and the endocytic pathways have pivotal functions in uni- and multi-cellular organisms. Protein delivery an...

The ICY1 gene from Saccharomyces cerevisiae affects nitrogen consumption during alcoholic fermentation

Electron. j. biotechnol; 17 (4), 2014
Background Saccharomyces cerevisiae is the main microorganism responsible for alcoholic fermentation. In this process, the consumption of nitrogen is of great importance since it is found in limiting quantities and its deficiency produces sluggish and/or stuck fermentations generating large economic loss...

Isolation and characterization of lactic acid bacteria and yeasts from the Brazilian grape sourdough

Braz. j. pharm. sci; 50 (2), 2014
Sourdough is a mixture of flour and water fermented by lactic acid bacteria and yeast, with a large use in bakery products. This study was developed with Brazilian grape (Niagara rosada) sourdough obtained from spontaneous fermentation. The aim of this work was to characterize genotypic and phenotypicall...

Modeling the kinetics of pyrite ash biodesulfurization by Saccharomyces cerevisiae and Acetobacter aceti in liquid state bioreactors

Electron. j. biotechnol; 16 (2), 2013
Background: Modeling the kinetics of the biodesulphurization bioprocess for the refining of pyrite ash by Saccharomyces cerevisiae and Acetobacter aceti have been studied in batch-type liquid- state bioreactors. Results: The biodesulphurization experiments were performed at varying temperatures of 25ºC,...