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Strana 1 od 26 výsledky
Partial substitution of hexitols for sucrose and dextrin in caries-producing diets.
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[Activity of the dental caries process in those engaged in dextrin manufacture].
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[Usefulness of Snyder's test for assessing the caries activity in a selected group of workers in a dextrin plant].
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Improved stability and controlled release of ω3/ω6 polyunsaturated fatty acids by spring dextrin encapsulation.
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Food grade biopolymers, such as dextrin, have been suggested as a technological solution for the controlled delivery of health promoting substances. The main focus of this work is to improve the stability of poly-unsaturated fatty acids (PUFAs) and controlled release by encapsulating with helical
The establishment of the bacterium Streptococcus mutans in dental plaque and the induction of caries in macaque monkeys (Macaca fascicularis) fed a diet containing cooked-wheat flour.
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A diet containing 50.7 per cent cooked wheat flour (78 per cent starches and dextrin) was fed to 82 monkeys from weaning for up to 407 days. Streptococcus mutans became established naturally and remained at a high level (25-40 per cent of the total anaerobic colony count) in the dental plaque of the
Gas-chromatographic approach to probe the absence of molecular inclusion in enantioseparations by carbohydrates. Investigation of linear dextrins ("acyclodextrins") as novel chiral stationary phases.
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Acetylated/silylated maltooligosaccharides with different degrees of oligomerization have been tested as chiral stationary phases for enantioselective gas chromatography. The acyclic dextrin derivatives carrying tert-butyldimethylsilyl groups at the primary hydroxyl sites and acetyl groups at the
β-Cyclo-dextrin 10.41-hydrate.
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The crystal structure of β-cyclo-dextrin, C(42)H(70)O(35)·10.41H(2)O, consists of truncated cone-shaped β-cyclo-dextrin mol-ecules that are herringbone packed. The primary hydr-oxy groups form an intra-molecular hydrogen-bonded array. The semipolar cavity of the cyclo-dextrin host is filled with
Crystal structure of a two-dimensional metal-organic framework assembled from lithium(I) and γ-cyclo-dextrin.
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The crystal structure of the polymeric title compound, catena-poly[[[di-aqua-lithium]-μ-γ-cyclo-dextrin(1-)-[aqua-lithium]-μ-γ-cyclo-dextrin(1-)] pentadecahydrate], {[Li2(C48H79O40)2(H2O)3]·15H2O}
Comparative Structural Characterization of Spiral Dextrin Inclusion Complexes with Vitamin E or Soy Isoflavone.
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In this study, the preparation and structural properties of spiral dextrin (SD)/vitamin E and SD/soy isoflavone inclusion complexes were studied. SD was obtained from debranched normal maize starch using isoamylases. After fractionation using a novel method of gradient ethanol precipitation, SD was
Crystal structure of the inclusion complex of beta-cyclodextrin with mefenamic acid from high-resolution synchrotron powder-diffraction data in combination with molecular-mechanics calculations.
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The crystal structure of the inclusion complex of beta-cyclo-dextrin with mefenamic acid has been determined from a combination of high-resolution synchrotron powder-diffraction data and molecular-mechanics calculations. A grid search indicates two possible solutions, which are corroborated by
Histamine release by sugar polymers in the rat.
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Histamine release into the peritoneal cavity of rats following intraperitoneal injections of sugar polymers such as dextran or dextrin was potentiated by insulin, even when the hormone was given simultaneously with the polymer and the blood sugar level was unchanged. Hypoglycaemia is therefore not
Gas chromatographic enantioseparation of unfunctionalized chiral alkanes: a challenge in separation science (overview, state of the art, and perspectives).
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The chromatographic enantioseparation of small unfunctionalized chiral alkanes C*HR(1)R(2)R(3) (R = alkyl) represents a challenge in separation science. Because of the lack of any functional groups, enantiorecognition in the presence of a chiral selector is solely based upon weak enantioselective
Selective medium for the isolation of Haemophilus aphrophilus from the human periodontium and other oral sites and the low proportion of the organism in the oral flora.
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We developed a medium for the selective recovery of Haemophilus aphrophilus. The medium, designated TSBVF, was composed of 4% tryptic soy agar, 10% heat-inactivated horse serum, 75 micrograms of bacitracin per ml, 5 micrograms of vancomycin per ml, and 50 micrograms of sodium fluoride per ml. TSBVF
Gas-chromatographic enantioseparation of unfunctionalized chiral hydrocarbons: an overview.
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Analytical gas-chromatographic enantioseparations of unfunctionalized chiral hydrocarbons (cycloalkanes and alkanes) on modified cyclodextrins with high-resolution capillary columns are reviewed. Due to the lack of functional groups of the hydrocarbons, enantiorecognition in the presence of
[A new genus of oral bacteria in human].
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A strain, No. 90-1, is isolated from the oral cavity of a patient with periodontophthy. This strain is a Gram-positive, non-endospore-forming, facultative anaerobe with spherical cells, 0.9-1.5 microns in diameter, occuring in pairs and seldom in short chains of four cells, and motile by one
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