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Phenotypic and metabolic traits of commercial Saccharomyces cerevisiae yeasts

Overview of attention for article published in AMB Express, May 2014
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75 Mendeley
Title
Phenotypic and metabolic traits of commercial Saccharomyces cerevisiae yeasts
Published in
AMB Express, May 2014
DOI 10.1186/s13568-014-0039-6
Pubmed ID
Authors

Catarina Barbosa, Patrícia Lage, Alice Vilela, Arlete Mendes-Faia, Ana Mendes-Ferreira

Abstract

Currently, pursuing yeast strains that display both a high potential fitness for alcoholic fermentation and a favorable impact on quality is a major goal in the alcoholic beverage industry. This considerable industrial interest has led to many studies characterizing the phenotypic and metabolic traits of commercial yeast populations. In this study, 20 Saccharomyces cerevisiae strains from different geographical origins exhibited high phenotypic diversity when their response to nine biotechnologically relevant conditions was examined. Next, the fermentation fitness and metabolic traits of eight selected strains with a unique phenotypic profile were evaluated in a high-sugar synthetic medium under two nitrogen regimes. Although the strains exhibited significant differences in nitrogen requirements and utilization rates, a direct relationship between nitrogen consumption, specific growth rate, cell biomass, cell viability, acetic acid and glycerol formation was only observed under high-nitrogen conditions. In contrast, the strains produced more succinic acid under the low-nitrogen regime, and a direct relationship with the final cell biomass was established. Glucose and fructose utilization patterns depended on both yeast strain and nitrogen availability. For low-nitrogen fermentation, three strains did not fully degrade the fructose. This study validates phenotypic and metabolic diversity among commercial wine yeasts and contributes new findings on the relationship between nitrogen availability, yeast cell growth and sugar utilization. We suggest that measuring nitrogen during the stationary growth phase is important because yeast cells fermentative activity is not exclusively related to population size, as previously assumed, but it is also related to the quantity of nitrogen consumed during this growth phase.

Twitter Demographics

The data shown below were collected from the profiles of 4 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 75 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Spain 2 3%
Denmark 1 1%
United Kingdom 1 1%
Thailand 1 1%
United States 1 1%
Unknown 69 92%

Demographic breakdown

Readers by professional status Count As %
Researcher 17 23%
Student > Ph. D. Student 14 19%
Student > Master 12 16%
Student > Bachelor 8 11%
Student > Doctoral Student 6 8%
Other 11 15%
Unknown 7 9%
Readers by discipline Count As %
Agricultural and Biological Sciences 40 53%
Biochemistry, Genetics and Molecular Biology 12 16%
Computer Science 4 5%
Chemical Engineering 2 3%
Medicine and Dentistry 2 3%
Other 6 8%
Unknown 9 12%

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 19 November 2014.
All research outputs
#12,873,594
of 21,353,399 outputs
Outputs from AMB Express
#263
of 1,175 outputs
Outputs of similar age
#100,831
of 204,843 outputs
Outputs of similar age from AMB Express
#1
of 1 outputs
Altmetric has tracked 21,353,399 research outputs across all sources so far. This one is in the 38th percentile – i.e., 38% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,175 research outputs from this source. They receive a mean Attention Score of 2.8. This one has done well, scoring higher than 77% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 204,843 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 49th percentile – i.e., 49% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them