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- Nucleation (2)
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Articles 1 - 5 of 5
Full-Text Articles in Life Sciences
Effects Of Salts On Crystallization Kinetics And Rheological Behavior Of Concentrated , -Trehalose Solutions, Marina Cerdeira, M. C. Puppo, Silvana Martini, M. L. Herrera
Effects Of Salts On Crystallization Kinetics And Rheological Behavior Of Concentrated , -Trehalose Solutions, Marina Cerdeira, M. C. Puppo, Silvana Martini, M. L. Herrera
Nutrition, Dietetics, and Food Sciences Faculty Publications
The effect of addition of CaCl2 2H2O and MgCl2 6H2O on crystallization kinetics and the rheological behavior of a 70% trehalose solution was studied by polarized light microscopy and dynamic oscillatory rheometry. Salts caused a delay on nucleation with induction times for crystallization longer for Mg2+ than for Ca2+. Divalent cations were incorporated into crystals, changing the growth of certain faces preferentially, which resulted in changes in morphology. Addition of CaCl2 2H2O in a high salt/trehalose molar ratio dramatically increased complex modulus (G*), indicating a stronger viscoelastic behavior. A gel-like structure was formed when Ca2+ was added to trehalose solution. …
Effect Of Sucrose Ester Addition On Nucleation And Growth Behavior Of Milk Fat-Sunflower Oil Blends, Marina Cerdeira, Silvana Martini, Richard W. Hartel, Maria Lidia Herrera
Effect Of Sucrose Ester Addition On Nucleation And Growth Behavior Of Milk Fat-Sunflower Oil Blends, Marina Cerdeira, Silvana Martini, Richard W. Hartel, Maria Lidia Herrera
Nutrition, Dietetics, and Food Sciences Faculty Publications
The effects of addition of the sucrose esters (SE) P-1670, P-170, and S-170 to a high-melting fraction of milk fat (HMF) and its blends with sunflower oil (SFO) on nucleation and growth were studied by laser polarized light turbidimetry and polarized light microscopy (PLM). The three SE delayed nucleation of HMF at the temperatures selected. P-1670 did not modify average crystal size after 3 h at crystallization temperature (Tc) or crystal size distribution and modified crystallization kinetics only slightly. P-170 and S-170, however, markedly diminished crystal size and narrowed crystal size distribution. Activation free energies of nucleation at equivalent supercooling, …
Crystallization Of Sunflower Oil Waxes, Silvana Martini, M. C. Anon
Crystallization Of Sunflower Oil Waxes, Silvana Martini, M. C. Anon
Nutrition, Dietetics, and Food Sciences Faculty Publications
Activation free energies of nucleation (ΔG c ) were calculated using induction times of crystallization measurements. Results showed that ΔG c decreased exponentially as wax concentration increased at a constant crystallization temperature (T c ). In contrast, for a constant supersaturation, ΔG c increased from 12 to 22°C but decreased between 22 and 35°C. Melting behavior of purified waxes and solutions of purified waxes in sunflower oil were studied by DSC after crystallization at fast and slow cooling rates (20 and 1°C/min, respectively). Low supercooling temperatures (T c >65°C) showed an increase in the onset temperature (T 0 ) as …
Utilizing Non-Fat Dried Milk In Sheep, C. Kim Chapman
Utilizing Non-Fat Dried Milk In Sheep, C. Kim Chapman
All Current Publications
No abstract provided.
Prevented Planting, Unknown Unknown