Sugar Solubility, Sucrose and Dextrose in Aqueous Glycerol

Segur, J. B.; Miner, C. S.

doi:10.1021/jf60008a005

Cited by 14 publications

(13 citation statements)

References 1 publication

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“…Other important ternary systems are described in Table 5.10 for the system sucrose-ethanol-water (Schiwek and Kolber, 1985), Table 5.11 for the system sucrose-propyleneglycol-water (Fey et al, 1951) and Table 5.12 for the system sucrose-glycerol-water (Segur and Miner, 1953).…”

Section: Ternary Systems: Sucrose-water-organic Liquid Solventmentioning

confidence: 99%

Sucrose solubility

Bubnik¹,

Kadlec²

1995

Sucrose

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Sucrose solubility means the concentration of sucrose in a saturated solution which is in equilibrium with sucrose in the solid state. Solubility of sucrose in water is of fundamental importance in defining the supersaturation, or driving force of sucrose crystal growth. Solubility of sucrose in mixtures of water with different organic solvents has important uses in some branches of the chemical and pharmaceutical industries, in analytics, etc. It is especially the case for ethanol, methanol, propyleneglycol, glycerol, acetone and pyridine.A molecule of sucrose has eight hydroxyl groups, three hydrophilic oxygen atoms (bound in a circle) and 14 hydrogen atoms. This enables the formation of hydrogen bonds with water molecules, hydration of sucrose molecules and therefore easy dissolution of sucrose in water. In nonaqueous solvents, sucrose solubility is significantly lower than in water and sucrose does not dissolve in non-polar solvents. Sucrose shows much higher values of solubility in ammonia, dimethylsulphoxide, aminoethanol and methylamine. Lower values exist for sulphur dioxide, formic and acetic acid, dimethylformamide, pyridine, glycol, methanol, ethanol and dioxan.Solubility of sucrose is influenced by temperature and by the amount and type of other dissolved molecules (impurities, non-sugars). Only a few of the impurities do not affect sucrose solubility or decrease it. Most impurities increase solubility. This is especially true of non-sugars which remain in sugar juices after their purification by standard procedures of sugar technology. Expression of concentration and composition of sucrose solutionsConcentration of sugar solutions is expressed in different ways depending on current application. Among the usual ways we can count weight percent (formerly Brix), mass and mole fraction, weight, sucrose to water ratio, molality, molar concentration and partial density. The cited quantities are defined for pure and impure solutions in the following text. A molecule of sucrose has eight hydroxyl groups, three hydrophilic oxygen atoms (bound in a circle) and 14 hydrogen atoms. This enables the formation of hydrogen bonds with water molecules, hydration of sucrose molecules and therefore easy dissolution of sucrose in water. In nonaqueous solvents, sucrose solubility is significantly lower than in water and sucrose does not dissolve in non-polar solvents. Sucrose shows much higher values of solubility in ammonia, dimethylsulphoxide, aminoethanol and methylamine. Lower values exist for sulphur dioxide, formic and acetic acid, dimethylformamide, pyridine, glycol, methanol, ethanol and dioxan.Solubility of sucrose is influenced by temperature and by the amount and type of other dissolved molecules (impurities, non-sugars). Only a few of the impurities do not affect sucrose solubility or decrease it. Most impurities increase solubility. This is especially true of non-sugars which remain in sugar juices after their purification by standard procedures of sugar technology. Expression of concentration and composition...

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Section: Ternary Systems: Sucrose-water-organic Liquid Solventmentioning

confidence: 99%

Sucrose solubility

Bubnik¹,

Kadlec²

1995

Sucrose

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“…Despite the usefulness of investigations involving solid–liquid equilibrium, there are relatively few works reporting solubility of sucrose in liquid mixtures. Segur and Miner studied the solubility of sucrose in aqueous glycerol mixtures. Peres and Macedo measured the solubility of sucrose in binary liquid mixtures formed by water, methanol, and ethanol for three different temperatures.…”

Section: Introductionmentioning

confidence: 99%

Sucrose Solubility in Binary Liquid Mixtures Formed by Water–Methanol, Water–Ethanol, and Methanol–Ethanol at 303 and 313 K

et al. 2016

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This work presents a study of solid–liquid equilibrium of sucrose in three different binary liquid mixtures, methanol–ethanol, methanol–water, and ethanol–water for the temperatures of 303 and 313 K covering the whole composition range of the binary liquid solution. The data are presented as a function of the dielectric constant of the binary liquid mixture taking into account the self-association of water and alcohol. From a dissolution phenomenon standpoint, it seems that the temperature is more important than the dielectric constant of the binary liquid solution for the solubility mechanism. For each temperature, it was observed that the sucrose solubility is directly proportional to the dielectric constant of the binary liquid mixture.

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“…At high glycerol/sucrose mole ratios (above 0.63), the sucrose content in the mixed solution was very close to the upper limit of sucrose solubility. 65 Thus, when preparing amorphous films through air-drying the concentrated solutions, it is possible that sucrose-rich and glycerol-rich phases may coexist on the local microdomain level. Although there is no exact definition of the size frontier of microdomains between nanoheterogeneity or phase separation, 24 those phase-separated domains or aggregates/clusters may influence the spectral heterogeneity.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Glycerol on Molecular Mobility in Amorphous Sucrose Detected by Phosphorescence of Erythrosin B

You

Ludescher

2007

Food Biophysics

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Luminescence from the triplet probe erythrosin B provides spectroscopic characteristics such as emission energy and lifetime that are sensitive to molecular mobility of the local solvent environment. This study investigated how variation in glycerol content influences the properties of an amorphous sucrose matrix by monitoring phosphorescence of erythrosin B over the temperature range from 5 to 100°C. Emission energy, lifetime, and red-edge excitation data revealed that glycerol affected the mobility of amorphous sucrose matrix primarily through plasticization when the mole ratio of glycerol/sucrose was above 0.27, resulting in a decrease in emission energy (ν p ), lifetime (C) and energy difference (Δν P ) with excitation at the absorption peak and red edge and an increase in the nonradiative, collisional quenching rate k TS0 . At mole ratios ≤0.27 and at temperatures below the matrix T g , glycerol exhibited an "antiplasticization" effect, as indicated by higher values of emission energy, lifetime, and energy difference and lower values of the matrix collisional quenching rate. Changes in the distribution of emission energy (emission bandwidth) and lifetime, and variation in the emission lifetime vs wavelength showed that glycerol reduced the spectral heterogeneity. These data illustrate the complex effect of a hydrogen bonding solute on the mobility of an amorphous, hydrogen bonded sugar matrix.

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Sugar Solubility, Sucrose and Dextrose in Aqueous Glycerol

Cited by 14 publications

References 1 publication

Sucrose solubility

Sucrose solubility

Sucrose Solubility in Binary Liquid Mixtures Formed by Water–Methanol, Water–Ethanol, and Methanol–Ethanol at 303 and 313 K

The Effect of Glycerol on Molecular Mobility in Amorphous Sucrose Detected by Phosphorescence of Erythrosin B

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