d fructose/maïs

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High d(+)-fructose diet adversely affects testicular weight gain in weaning rats─protection by moderate d(+)-glucose diet.

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The use of high D(+)-fructose corn syrup has increased over the past several decades in the developed countries, while overweight and obesity rates and the related diseases have risen dramatically. However, we found that feeding a high D(+)-fructose diet (80% D(+)-fructose as part of the diet) to

A Novel Glucose Isomerase from Caldicellulosiruptor bescii with Great Potentials in the Production of High-Fructose Corn Syrup.

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Glucose isomerase (GI) that catalyzes the conversion of D-glucose to D-fructose is one of the most important industrial enzymes for the production of high-fructose corn syrup (HFCS). In this study, a novel GI (CbGI) was cloned from Caldicellulosiruptor bescii and expressed in Escherichia

Whole cell immobilization of refractory glucose isomerase using tris(hydroxymethyl)phosphine as crosslinker for preparation of high fructose corn syrup at elevated temperature.
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Glucose isomerase (GI) responsible for catalyzing the isomerization from d-glucose to d-fructose, was an important enzyme for producing high fructose corn syrup (HFCS). In a quest to prepare HFCS at elevated temperature and facilitate enzymatic recovery, an effective procedure for whole cell

High-level expression of Thermobifida fusca glucose isomerase for high fructose corn syrup biosynthesis.
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Glucose isomerase (GIase), an efficient enzyme in the isomerization of d-glucose to d-fructose, has been widely used in food processing. In this study, an efficient expression system for a Thermobifida fusca GIase (GIase_Tfus) in Escherichia coli was firstly designed via a two-stage

Properties of a novel thermostable glucose isomerase mined from Thermus oshimai and its application to preparation of high fructose corn syrup.
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Glucose isomerase (GI) is used in vitro to convert d-glucose to d-fructose, which is capable of commercial producing high fructose corn syrup (HFCS). To manufacture HFCS at elevated temperature and reduce the cost of enriching syrups, novel refractory GIs from Thermoanaerobacterium xylanolyticum

Distinguishing Biologically Relevant Hexoses by Water Adduction to the Lithium-Cationized Molecule.
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A method to distinguish the four most common biologically relevant underivatized hexoses, d-glucose, d-galactose, d-mannose, and d-fructose, using only mass spectrometry with no prior separation/derivatization step has been developed. Electrospray of a solution containing hexose and a lithium salt

Separation and characterization of four hexose kinases from developing maize kernels.
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Four forms of hexose kinase activity from developing maize (Zea mays L.) kernels have been separated by ammonium sulfate precipitation, gel filtration chromatography, blue-agarose chromatography, and ion exchange chromatography. Two of these hexose kinases utilized d-glucose most effectively and are

Lowering the pH optimum of D-xylose isomerase: the effect of mutations of the negatively charged residues.
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Streptomyces rubiginosus D-xylose isomerase catalyzes the reversible isomerization of D-glucose to D-fructose. The isomerization reaction is maximized in the alkaline region of pH 8.5-8.8. The amino acid residues around two active site histidines (His-54 and His-220) and on the surface of the enzyme

Co-expression of D-glucose isomerase and D-psicose 3-epimerase: development of an efficient one-step production of D-psicose.
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D-Psicose has been attracting attention in recent years because of its alimentary activities and is used as an ingredient in a range of foods and dietary supplements. To develop a one-step enzymatic process of D-psicose production, thermoactive D-glucose isomerase and the D-psicose 3-epimerase

[Production of sugar syrup containing rare sugar using dual-enzyme coupled reaction system].
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Enzymatic conversion is very important to produce functional rare sugars, but the conversion rate of single enzymes is generally low. To increase the conversion rate, a dual-enzyme coupled reaction system was developed. Dual-enzyme coupled reaction system was constructed using D-psicose-3-epimerase

Immobilization of D-xylose (D-glucose) isomerase from a Chainia species.
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D-Xylose isomerase is a heat-stable enzyme which isomerizes D-xylose into D-xylulose. D-Xylose isomerase from various species also isomerizes D-glucose into D-fructose. This enzyme is used in industry for the production of high-fructose corn syrup. The enzyme is specific for both, xylose and

One-step purification of Actinoplanes missouriensis D-xylose isomerase by high-performance immobilized copper-affinity chromatography: functional analysis of surface histidine residues by site-directed mutagenesis.
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D-Xylose isomerase (XI) is a heat-stable homotetrameric enzyme used in industry for the production of high-fructose corn syrups by isomerization of D-glucose into D-fructose. To carry out biochemical and structural studies of this enzyme and of its engineered variants, a rapid and convenient method

Molecular and industrial aspects of glucose isomerase.
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Glucose isomerase (GI) (D-xylose ketol-isomerase; EC. 5.3.1.5) catalyzes the reversible isomerization of D-glucose and D-xylose to D-fructose and D-xylulose, respectively. The enzyme has the largest market in the food industry because of its application in the production of high-fructose corn syrup

Fructose consumption and consequences for glycation, plasma triacylglycerol, and body weight: meta-analyses and meta-regression models of intervention studies.
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BACKGROUND The glycemic response to dietary fructose is low, which may improve concentrations of glycated hemoglobin (HbA(1c), a marker of dysglycemia). Meanwhile, adverse effects on plasma triacylglycerol (a marker of dyslipidemia) and body weight have been questioned. Such effects are reported

Structural analysis of substrate recognition by glucose isomerase in Mn2+ binding mode at M2 site in S. rubiginosus.
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Glucose isomerase (GI) catalyzes the reversible enzymatic isomerization of d-glucose and d-xylose to d-fructose and d-xylulose, respectively. This is one of the most important enzymes in the production of high-fructose corn syrup (HFCS) and biofuel. We recently determined the crystal structure of GI

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d fructose/maïs

High d(+)-fructose diet adversely affects testicular weight gain in weaning rats─protection by moderate d(+)-glucose diet.

A Novel Glucose Isomerase from Caldicellulosiruptor bescii with Great Potentials in the Production of High-Fructose Corn Syrup.

Whole cell immobilization of refractory glucose isomerase using tris(hydroxymethyl)phosphine as crosslinker for preparation of high fructose corn syrup at elevated temperature.

High-level expression of Thermobifida fusca glucose isomerase for high fructose corn syrup biosynthesis.

Properties of a novel thermostable glucose isomerase mined from Thermus oshimai and its application to preparation of high fructose corn syrup.

Distinguishing Biologically Relevant Hexoses by Water Adduction to the Lithium-Cationized Molecule.

Separation and characterization of four hexose kinases from developing maize kernels.

Lowering the pH optimum of D-xylose isomerase: the effect of mutations of the negatively charged residues.

Co-expression of D-glucose isomerase and D-psicose 3-epimerase: development of an efficient one-step production of D-psicose.

[Production of sugar syrup containing rare sugar using dual-enzyme coupled reaction system].

Immobilization of D-xylose (D-glucose) isomerase from a Chainia species.

One-step purification of Actinoplanes missouriensis D-xylose isomerase by high-performance immobilized copper-affinity chromatography: functional analysis of surface histidine residues by site-directed mutagenesis.

Molecular and industrial aspects of glucose isomerase.

Fructose consumption and consequences for glycation, plasma triacylglycerol, and body weight: meta-analyses and meta-regression models of intervention studies.

Structural analysis of substrate recognition by glucose isomerase in Mn2+ binding mode at M2 site in S. rubiginosus.

La base de données d'herbes médicinales la plus complète soutenue par la science