Strains using pentose pentose and hexose. Medical search. Frequent questions

Plain yeast (baker's yeast) is better at converting six-carbon sugar, hexoses, than other sugars. (sekab.com)
Hemicellulose from agriculture and deciduous trees also contains several different five-carbon sugars, pentoses. (sekab.com)
These yeast strains are capable of fermenting both hexoses, six-carbon sugars and pentoses, five-carbon sugars. (sekab.com)
Lignocellulosic biomass, rich in hexose and pentose sugars, is an attractive resource for commercially viable bioethanol production. (vtt.fi)
the other capsular Haemophilus serotypes are composed of hexose rather than pentose sugars. (medscape.com)
Unfortunately, baker's yeast is unable to efficiently metabolize pentose sugars, particularly D-xylose, which accounts for up to 35% of total sugars in xylan-rich lignocellulosic biomass such as hard woods and straw [ 3 ]. (biomedcentral.com)
These pre-treatments are designed to allow the carbohydrate portion of the biomass to be broken down into simple sugars, for example by en-zymatic hydrolysis using exogenously added cellulases to release fermentable sugars [ 12 ]. (banksolar.ru)
High ethanol yields are dependent on co-fermentation of hexose and pentose sugars present in lignocellulosic hydrolysates. (pku.edu.cn)
Efficient fermentation processes to produce ethanol from both the hexose and pentose sugars available in low-cost lignocellulosic biomass are sought to support the expansion of the biofuels industry. (cmich.edu)
During the last years we have successfully developed technologies (" C5-technology ") to engineer yeast ( Saccharomyces cerevisiae ) strains for the fermentation of pentose sugars like xylose and arabinose. (goethe-university-frankfurt.de)
Agricultural and forestry residues are considered as a sustainable source for the fermentative production of biofuels and are rich in pentose sugars. (goethe-university-frankfurt.de)
Unfortunately, in contrast to glucose or sucrose yeast cells cannot normally ferment pentose sugars into biofuels like ethanol or butanol. (goethe-university-frankfurt.de)
We have used our proprietary C5-technology to construct recombinant industrial yeast strains fermenting efficiently both, glucose and pentose sugars (e.g. (goethe-university-frankfurt.de)
Kim J.-H., Block D.E., Mills D.A. (2010) Simultaneous consumption of pentose and hexose sugars: an optimal microbial phenotype for efficient fermentation of lignocellulosic biomass, Appl. (ifpenergiesnouvelles.fr)

Since the Saccharomyces cerevisiae is unable to ferment the pentose, the search for pentose-fermenting microorganisms could be an alternative. (scielo.br)
Saccharomyces strains were used widely and traditionally for industrial ethanol production because of its ability to produce high concentrations of ethanol from hexoses and its high tolerance to ethanol and other inhibitory compounds. (scialert.net)
Saccharomyces cerevisiae efficiently ferments hexoses but is naturally unable to utilize pentoses. (vtt.fi)
However the traditional ethanologenic yeast Saccharomyces cerevisiae has been found to be unable to ferment xylose and also unable to utilize this pentose sugar for growth. (pku.edu.cn)
Grotkjœr T., Christakopoulos P., Nielsen J., Olsson L. (2005) Comparative metabolic network analysis of two xylose fermenting recombinant Saccharomyces cerevisiae strains, Metabolic Eng. (ifpenergiesnouvelles.fr)

In strain LTH677, a starter organism used in meat fermentation, there is an oxygen-dependent regulation of the expression of the catalase gene katA. (wikipedia.org)
In this work, the isolation of yeast strains from decaying vegetal materials, flowers, fruits and insects and their application for assimilation and alcoholic fermentation of xylose were carried out. (scielo.br)
Few yeast strains tolerant to inhibitors are available due to a lack of understanding of mechanisms involved in the stress tolerance for bioethanol fermentation. (usda.gov)
In simultaneous saccharification and fermentation of Arundo hydrolysate, GS1.11-26 produced 32% more ethanol than the parent strain Ethanol Red, due to efficient D-xylose utilization. (biomedcentral.com)
Cell extracts of strain GS1.11-26 displayed 17-fold higher XI activity compared to the parent strain, but overexpression of XI alone was not enough to establish D-xylose fermentation. (biomedcentral.com)
The GS1.11-26 strain shows highly promising potential for further development of an all-round robust yeast strain for efficient fermentation of various lignocellulose hydrolysates. (biomedcentral.com)
This product is produced by submerged fermentation of a traditionally selected Bacillus lentus strain followed by purification, formulation and drying. (enzymes.bio)

The different materials in environment were source for pentose-assimilating yeast with variable metabolic profile. (scielo.br)
Production of glycolipid biosurfactants, mannosylerythritol lipids, from pentoses and d-glucose/d-xylose mixtures by Pseudozyma yeast strains. (scielo.br)
Sekab E-technology has partnered with world leading yeast manufacturers to verify that their special yeast strains also function on an industrial scale. (sekab.com)
Metabolic engineering of this yeast has resulted in strains capable of xylose utilization. (vtt.fi)
The purpose of the present work was to develop such a strain from a prime industrial yeast strain, Ethanol Red, used for bioethanol production. (biomedcentral.com)
An industrial yeast strain for bioethanol production with lignocellulose hydrolysates has been developed in the genetic background of a strain widely used for commercial bioethanol production. (biomedcentral.com)
From the six HXKs analyzed here, only ZmHXK9 has minimal hexose phosphorylating activity even though enzymatic function of all isoforms (ZmHXK4-9) was confirmed using a yeast complementation approach. (biomedcentral.com)

The inherently higher robustness and tolerance of S. cerevisiae to various inhibitors gives it a head start in programs aimed at developing strains with extreme inhibitor tolerance, able to efficiently ferment hexoses and pentoses in concentrated lignocellulose hydrolysates [ 6 ]. (biomedcentral.com)

The strain Candida tropicalis S4 produced 6 g L -1 of ethanol from 56 g L -1 of xylose, while the strain C. tropicalis E2 produced 22 g L -1 of xylitol. (scielo.br)
Ethanol production from selected lignocellulosic hydrolysates by genome shuffled strains of Scheffersomyces stipitis. (scielo.br)
An expression cassette containing 13 genes including Clostridium phytofermentans XylA , encoding D-xylose isomerase (XI), and enzymes of the pentose phosphate pathway was inserted in two copies in the genome of Ethanol Red. (biomedcentral.com)
The strain uses glucose and D-xylose with high consumption rates and partial cofermentation in various lignocellulose hydrolysates with very high ethanol yield. (biomedcentral.com)

However, even the best recombinant S. cerevisiae strains of today metabolize xylose with a low rate compared to glucose. (vtt.fi)
In this article, progress in development of xylose-fermenting recombinant S. cerevisiae strains is reviewed, including naturally occurring xylose-fermenting microorganisms, xylose metabolic pathway, metabolic engineering of S. cerevisiae, protoplast fusion and genome shuffling. (pku.edu.cn)

However, S. cerevisiae is naturally unable to metabolize pentoses, such as xylose, arabinose and also polysaccharides (starch). (scialert.net)
This study compares the transcript profiles of an S. cerevisiae strain engineered to utilize xylose via the xylose reductase-xylitol dehydrogenase pathway in aerobic chemostat cultures with glucose or xylose as the main carbon source. (vtt.fi)

In contrast, in the defined sugar mixture and WSH, the pentoses were consumed faster than glucose. (biomedcentral.com)
Subsequently, the cultures entered a lag phase when all pentoses were consumed after which glucose uptake rate increased. (biomedcentral.com)
The observation could be described with a modified diauxic model including a second enzyme system with a higher affinity for glucose being expressed when pentose saccharides are consumed. (biomedcentral.com)
The previously observed co-consumption of glucose and pentoses with a preference for the latter was herein confirmed. (biomedcentral.com)
However, once all pentoses were consumed, C. saccharolyticus most probably expressed another uptake system to account for the observed increased glucose uptake rate. (biomedcentral.com)
Moreover, the observation indicates a regulation system that has fundamental research relevance, since pentose and glucose uptake in C. saccharolyticus has only been described with ABC transporters, whereas previously reported diauxic growth phenomena have been correlated mainly to PTS systems for sugar uptake. (biomedcentral.com)

2 2 Webb SR, Lee H. Regulation of d-xylose utilization by hexoses in pentose-fermenting yeasts. (scielo.br)
However the yield has not reached a satisfactory level for industrial applications On the other hand, pentose-assimilating yeasts can be used for obtainment of high aggregate value products. (scielo.br)
The pentose-assimilating capacity of yeasts Pseudozyma antarctica PYCC 5048 T , P. aphidis PYCC 5535 T and P. rugulosa PYCC 5537 T and production of a glycolipid biosurfactant was demonstrate 3 3 Faria NT, Santos MV, Fernandes P, Fonseca LL, Fonseca C, Ferreira FC. (scielo.br)
These two yeasts strains were isolated from wine and among local beer yeasts respectively. (scialert.net)
The resulting so-called hexose transporter ( hxt ) null strain (EBY.VW4000) has become a valuable tool worldwide for the characterization of sugar transporters from other yeasts, fungi, plants, animals and even human cells (click here to see how the tool works). (goethe-university-frankfurt.de)

The production of hexose 6 phosphate is a key node in different pathways that are required for a successful germination. (biomedcentral.com)
Hexokinase (HXK) is a glycolytic regulatory enzyme that catalyzes the irreversible phosphorylation reaction of D-hexoses at the sixth carbon using ATP-Mg 2+ as a phosphate donor. (biomedcentral.com)

pentoses are fermented via the Phosphoketolase pathway to lactic and acetic acids. (wikipedia.org)
Most anaerobic bacteria undergo hexose metabolism via the Emden-Meyerhof-Parnas pathway (EMP) which produces pyruvate as an intermediate along with NADH. (fao.org)

In this context, appropriate use of the pentose released by hemicellulose hydrolysis could improve de economic viability of this process. (scielo.br)
One of the bottlenecks is the utilization of pentoses released by hydrolysis of hemicellulose that correspond to around 30% of the lignocellulosic feedstock. (scielo.br)
Hemicellulose comprises heterogenous polysaccharides made up of hexose, pentose and their derivatives, notably xylose and mannose. (enzymes.bio)

In biotechnology applications, improved performance has been reported by the strains with minimal metabolism created by blocking handful of reactions that drive the metabolic flux through the predefined minimal metabolic reactions [ 15 ]. (biomedcentral.com)

In strain CCUG 42687, their production is dependent on nutrients, temperature and pH. (wikipedia.org)

MECHANISMHemicellulose comprises a group of heterogenous polysaccharides made up of hexose, pentose and their derivatives. (sunsonenzymes.com)

In order to make bioprocesses economically viable, it is essential to engineer microbial strains that offer enhanced yield of the desired product [ 6 , 7 ]. (biomedcentral.com)
To investigate host specificity, we used gnotobiotic Drosophila, microbial pulse-chase protocols, and microscopy to investigate the stability of different strains of bacteria in the fly gut. (bvsalud.org)

The major polar lipids of strain GJSW-36 T were phosphatidylglycerol and phosphatidylethanolamine. (microbiologyresearch.org)

Materials and Strategies Bacterial Strains and Mass media Used We utilized the next strains inside our tests: PAO1-UW- Vargatef inhibitor (Stover et al. (antiviralbiologic.com)

Primary colonizers saturate the niche and exclude secondary colonizers of the same strain, but initial colonization by Lactobacillus species physically remodels the niche through production of a glycan-rich secretion to favor secondary colonization by unrelated commensals in the Acetobacter genus. (bvsalud.org)
Based on phylogenetic, phenotypic and chemotaxonomic evidence, it is proposed that strain BJ-1 T represents a novel species in a new genus, for which the name Psychrobium conchae gen. nov., sp. (microbiologyresearch.org)
On the basis of the data presented, strain GJSW-36 T is considered to represent a novel species of the genus Thalassotalea , for which the name Thalassotalea ponticola sp. (microbiologyresearch.org)

The strains Candida oleophila G10.1 and Metschnikowia koreensis G18 consumed significant amount of xylose in aerobic cultivation releasing non-identified metabolites. (scielo.br)

The depletion of DOM over time was strongly correlated with increases in expression of many genes associated with heterotrophy (e.g., amino acid, fatty acid, and carbohydrate metabolism) belonging to a Hydrogenophaga strain that accounted for a relatively large percentage (~8%) of the metatranscriptome. (frontiersin.org)

Strain 5 produces a plasmid-encoded bacteriocin that is identical to sakacin P, as well as two chromosomally encoded bacteriocins, which were designated sakacin T and sakacin X. LasX is a transcriptional regulator of the lactocin S biosynthetic genes in strain L45 of Lactobacillus sakei. (wikipedia.org)
This Hydrogenophaga strain also expressed genes indicative of chemolithoautotrophy, including CO 2 fixation, H 2 oxidation, S-compound oxidation, and denitrification. (frontiersin.org)

of exopolysaccharide production, strains grown overnight in NYGB medium were washed and resuspended in 10 mM MgCl2 (OD600 nm=0.1). (mirnamimics.com)

Because the entire genome of a laboratory strain of H influenzae has been sequenced, additional insights into its molecular mechanisms of pathogenesis will undoubtedly be gained in the near future. (medscape.com)

Among more than 100 potential inhibitory compounds detected, furfural and 5-hydroxymethylfurfural (HMF) are most potent and are representative of inhibitors derived from dehydration of pentose and hexose using economic dilute acid hydrolysis. (usda.gov)

Strain GJSW-36 T contained ubiquinone-8 (Q-8) as the predominant ubiquinone and summed feature 3 (C 16 : 1 ω7 c and/or C 16 : 1 ω6 c ), C 17 : 1 ω8 c and C 16 : 0 as the major fatty acids. (microbiologyresearch.org)

results in the bacterial mutagenicity assay were negative for the five strains employed, e.g. ta 1535, ta1537, ta 98, ta 100 and ta 102, while cytotoxicity was evident in all cases at 5000 microg per plate, the highest concentration assayed. (liverpool.ac.uk)
A novel psychrophilic, marine, bacterial strain designated BJ-1 T was isolated from the Iheya North hydrothermal field in the Okinawa Trough off Japan. (microbiologyresearch.org)
A Gram-stain-negative, aerobic, non-flagellated and rod-shaped or ovoid bacterial strain, designated GJSW-36 T , was isolated from seawater at Geoje island in the South Sea, South Korea. (microbiologyresearch.org)
Many of the most highly expressed hydrolases belonged to a Ca . Bathyarchaeota strain and may have been associated with recycling of bacterial biomass. (frontiersin.org)

The best-performing strain, GS1.11-26, showed a maximum specific D-xylose consumption rate of 1.1 g/g DW/h in synthetic medium, with complete attenuation of 35 g/L D-xylose in about 17 h. (biomedcentral.com)

Antilisterial strains of L. sakei are used in Europe for the production of saucisson and can be used for the conservation of fresh meat. (wikipedia.org)
In strain CTC 494, the presence of salt and a curing agent (sodium chloride and sodium nitrite) reduces the production of the antilisterial bacteriocin sakacin K. Growth of CTC 494 is also dependent on nutrients availability. (wikipedia.org)
as well as the production of xylitol and arabitol by Debaryomyces hansenii from pentose. (scielo.br)

The type strain is GJSW-36 T ( = KCTC 42155 T = CECT 8656 T ). From this study, it is also proposed that Thalassomonas fusca should be reclassified as a member of the genus Thalassotalea and the description of the genus Thalassotalea is emended. (microbiologyresearch.org)

The aim of this study was to quantify uptake of pentose and hexose monosaccharides in an industrial substrate and to present a kinetic growth model of C. saccharolyticus that includes sugar uptake on defined and industrial media. (biomedcentral.com)

We show that a host-constructed physical niche in the foregut selectively binds bacteria with strain-level specificity, stabilizing their colonization. (bvsalud.org)

A pale pink and strictly aerobic bacterium, designated strain M71 T , was isolated from the soil of a Euphrates poplar forest in Xingjiang, PR China. (microbiologyresearch.org)

While enzyme assays have not been carried out to determine the substrate specificity of fructose-1,6-bisphosphate aldolase and PPi-dependent 6-phosphofructokinase in C. thermocellum, it is tempting to propose a similar hexose-to-pentose conversion mechanism. (hsp90-inhibitors.com)

Although, historically, type b encapsulated strains have been of primary clinical and immunologic importance because of their association with invasive infection, including meningitis, the other encapsulated strains also can cause invasive disease. (medscape.com)
In pioneering experiments in the 1930s, Fothergill and Wright demonstrated that blood obtained from children aged 3 months to 3 years lacked bactericidal activity against type b strains, whereas the blood of neonates, older children, and adults was bactericidal. (medscape.com)

Cells of the strain were Gram-reaction-negative, rod-shaped and motile by means of a single polar flagellum. (microbiologyresearch.org)

Here, we present an absolute temporal multi-omic analysis of a minimalistic cellulose-degrading and methane-producing consortium (SEM1b), which was resolved at the strain level and augmented with two strain isolates 10 . (nature.com)

Anatomy9

Organisms20

Diseases3

Chemicals and Drugs137

Analytical, Diagnostic and Therapeutic Techniques and Equipment23

Phenomena and Processes53

Disciplines and Occupations6

Anthropology, Education, Sociology and Social Phenomena1

Technology, Industry, Agriculture5

Information Science4

Health Care8

Sugars14

Saccharomyces5

Fermentation7

Yeast7

Ferment1

Ethanol4

Recombinant2

Cerevisiae2

Glucose6

Yeasts5

Phosphate2

Pathway2

Hemicellulose3

Metabolic1

CCUG1

Polysaccharides1

Microbial2

Lipids1

Inhibitor1

Species3

Candida1

Metabolism1

Genes2

Exopolysaccharide1

Genome1

Inhibitors1

Fatty1

Bacterial4

Consumption1

Production3

Genus1

Industrial1

Bacteria1

Aerobic1

Dependent1

Type2

Cells1

Present1