Palatinose
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Produção de glicosiltransferase por Klebsiella sp. K18 e conversão de sacarose em palatinose utilizando células imobilizadas
A linhagem Klebsiella sp. K18 produz a enzima glicosiltransferase que catalisa a conversão de sacarose em palatinose, um açúcar alternativo que apresenta baixa cariogenicidade. Metodologia de Superfície de Resposta foi empregada com sucesso para determinar a concentração ótima dos componentes do meio de cultivo. A máxima produção de glicosiltransfe
Brazilian Journal of Microbiology. Publicado em: 2009-03
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2. Produção, purificação e estudos das caracteristicas bioquimicas de glicosiltransferase de Erwinia sp. D-12 : produção de isomaltulose a partir de sacarose
Trezentas e quatorze linhagens de microrganismos foram isoladas de amostras de mel, flores, frutas, caldo, melaço e mosto de usina de álcool e açúcar e testadas quanto a capacidade de produção de glicosiltransferase, que catalisa a conversão de sacarose em isomaltulose (6-O-8-Dglicopirano sil-D-frutofuranose). A isomaltulose também conhecida como pal
Publicado em: 1998
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3. Caracterização bioquimica de glicosiltransferase de Klebsrella sp e produção de isomaltulose a partir de sacarose
Duzentas e cinqüenta e oito linhagens de microrganismos foram isoladas de amostras de melaço de cana-de-açúcar, frutas e flores, e testadas quanto a capacidade de converter a sacarose em palatinose. Entre estes microrganismos foi selecionada uma linhagem identificada como Klebsiella sp produtora de glicosiltransferase, que catalisa a conversão de sacaro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/1993
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4. Non-cariogenicity of the disaccharide palatinose in experimental dental caries of rats.
The caries-inducing activity of palatinose (isomaltulose, alpha-D-glucopyranosyl-1,6-fructose) was examined in in vitro and in vivo experiments, comparing it with other carbohydrates. When Streptococcus mutans was successively subcultured in a broth medium containing 1% palatinose, the strains belonging to serotype a, d, or g did not ferment palatinose, wher
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5. The Sucrose Analog Palatinose Leads to a Stimulation of Sucrose Degradation and Starch Synthesis When Supplied to Discs of Growing Potato Tubers1
In the present paper we investigated the effect of the sucrose (Suc) analog palatinose on potato (Solanum tuberosum) tuber metabolism. In freshly cut discs of growing potato tubers, addition of 5 mm palatinose altered the metabolism of exogenously supplied [U-14C]Suc. There was slight inhibition of the rate of 14C-Suc uptake, a 1.5-fold increase in the
American Society of Plant Physiologists.
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6. Cloning and Characterization of the Gene Cluster for Palatinose Metabolism from the Phytopathogenic Bacterium Erwinia rhapontici
Erwinia rhapontici is able to convert sucrose into isomaltulose (palatinose, 6-O-α-d-glucopyranosyl-d-fructose) and trehalulose (1-O-α-d-glucopyranosyl-d-fructose) by the activity of a sucrose isomerase. These sucrose isomers cannot be metabolized by plant cells and most other organisms and therefore are possibly advantageous for the pathogen. This view is
American Society for Microbiology.
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7. Structural and Functional Analysis of a Putative Gene Cluster for Palatinose Transport on the Linear Chromosome of Agrobacterium tumefaciens MAFF301001
We identified a putative pal gene cluster (palR, palE, palF, palG, palK, palA, and palB) in the plant-tumorigenic bacterium Agrobacterium tumefaciens MAFF301001; by sequencing analyses, this cluster was found to be involved in palatinose transport, and its functional importance was revealed by mutational analyses. The pal gene products were highly homologous
American Society for Microbiology.
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8. Metabolizable and Non-Metabolizable Sugars Activate Different Signal Transduction Pathways in Tomato1
To gain insight into the regulatory mechanisms of sugar signaling in plants, the effect of derivatives of the transport sugar sucrose (Suc), the Suc isomers palatinose and turanose, and the Suc analog fluoro-Suc were tested. Photo-autotrophic suspension culture cells of tomato (Lycopersicon peruvianum) were used to study their effect on the regulation of mar
American Society of Plant Physiologists.
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9. HUMAN INTESTINAL DISACCHARIDASES AND HEREDITARY DISACCHARIDE INTOLERANCE. THE HYDROLYSIS OF SUCROSE, ISOMALTOSE, PALATINOSE (ISOMALTULOSE), AND A 1,6-α-OLIGOSACCHARIDE (ISOMALTO-OLIGOSACCHARIDE) PREPARATION*
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10. The High-Affinity Maltose/Trehalose ABC Transporter in the Extremely Thermophilic Bacterium Thermus thermophilus HB27 Also Recognizes Sucrose and Palatinose
We have studied the transport of trehalose and maltose in the thernophilic bacterium Thermus thermophilus HB27, which grows optimally in the range of 70 to 75°C. The Km values at 70°C were 109 nM for trehalose and 114 nM for maltose; also, a high Km (424 nM) was found for the uptake of sucrose. Competition studies showed that a single transporter recognize
American Society for Microbiology.
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11. Glucose and Disaccharide-Sensing Mechanisms Modulate the Expression of α-amylase in Barley Embryos1
The aim of this study was to investigate the sugar-sensing processes modulating the expression of α-amylase in barley (Hordeum vulgaris L. var Himalaya) embryos. The results highlight the existence of independent glucose (Glc) and disaccharides sensing. Glc treatment destabilizes the α-amylase mRNA. Non-metabolizable disaccharides repress α-amylase induct
American Society of Plant Physiologists.
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12. Combined assessment of intestinal disaccharidases in congenital asucrasia by differential urinary disaccharide excretion.
Investigation of intestinal disaccharide hydrolysis and permeability by means of a non-invasive differential sugar absorption test was performed in a family containing two siblings with primary sucrase-isomaltase deficiency. The procedure, which depends on measurement of urinary excretion ratios after the oral administration of lactose, sucrose, palatinose,