The particle image velocimetry method in the study of the dynamics of phase transitions induced by high pressures in triolein and oleic acid

Tefelski, D.; Wierschem, Andreas; Delgado, Antonio; Rostocki, A. J.; Siegoczyński, R. M.

doi:10.1080/08957959.2010.551121

Cited by 7 publications

(4 citation statements)

References 10 publications

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“…Regardless of pressure levels and maximum temperatures achieved under pressure, the rapid onset of crystallization during adiabatic compression resulted in smaller homogeneous crystal structures [25]. This finding agreed with other studies on pressurization of lipids that showed that forced convection during compression prior to the onset of phase transition can elucidate the enhancement of structural modification via an improvement in the kinetic mobility of TAGs during the initial stage of lipid crystallization (nucleation) [26].…”

Section: Introductionsupporting

confidence: 84%

“…Interestingly, the addition of 1% salt increased the pressure threshold for 10% FHSBO sample from 531.7 MPa to 560.1 MPa but reduced the pressure threshold from 423.6 to 379.6 MPa for 20% FHSBO and from 351.0 to 300.5 MPa for 30% FHSBO samples. When the supersaturation was low at low solid mass fraction (10% FHSBO), longer pressurization may impart forced convection in the liquid state before phase transition take place, which was observed by Tefelski et al (2011) during the pressurization of oleic acid [26]. Whether the addition of salt leads to convection effects that affect nuclei formation is not clear.…”

Section: Resultsmentioning

confidence: 99%

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Effects of Lipid Solid Mass Fraction and Non-Lipid Solids on Crystallization Behaviors of Model Fats under High Pressure

2019

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Different fractions of fully hydrogenated soybean oil (FHSBO) in soybean oil (10–30% w/w) and the addition of 1% salt (sodium chloride) were used to investigate the effect of high-pressure treatments (HP) on the crystallization behaviors and physical properties of the binary mixtures. Sample microstructure, solid fat content (SFC), thermal and rheological properties were analyzed and compared against a control sample (crystallized under atmospheric condition). The crystallization temperature (Ts) of all model fats under isobaric conditions increased quadratically with pressure until reaching a pressure threshold. As a result of this change, the sample induction time of crystallization (tc) shifted from a range of 2.74–0.82 min to 0.72–0.43 min when sample crystallized above the pressure threshold under adiabatic conditions. At the high solid mass fraction, the addition of salt reduced the pressure threshold to induce crystallization during adiabatic compression. An increase in pressure significantly reduced mean cluster diameter in relation to the reduction of tc regardless of the solid mass fraction. In contrast, the sample macrostructural properties (SFC, storage modulus) were influenced more significantly by solid mass fractions rather than pressure levels. The creation of lipid gel was observed in the HP samples at 10% FHSBO. The changes in crystallization behaviors indicated that high-pressure treatments were more likely to influence crystallization mechanisms at low solid mass fraction.

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Section: Introductionsupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Effects of Lipid Solid Mass Fraction and Non-Lipid Solids on Crystallization Behaviors of Model Fats under High Pressure

2019

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“…Such phase transitions were observed first in castor oil [18] then in most of the vegetable oils used for production of biodiesel [19][20][21][22]. In all of them, a discontinuous phase transition has been observed [23][24][25]. The phase transitions in triacyloglycerol were also confirmed [26].…”

Section: Introductionmentioning

confidence: 67%

Could RME biodiesel be potentially harmful to modern engine? solidification process in RME

Tarakowski

Malanowski

Rostocki

et al. 2015

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Section: Crystallization Temperature (T S ) and Pressure Thresholdmentioning

confidence: 99%

Thermal Analysis Kinetics for Understanding Materials Behavior

2020

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All materials respond to temperature. They also exist and function within limited timeframes.The science of kinetics combines time and temperature into a single framework that allows one to understand the thermal behavior of materials. This book provides a collection of papers dealing with the kinetic analysis of data obtained by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The papers are, collectively, very diverse in their content. Some provide general overviews of the kinetic approaches while other focus on advanced applications of the kinetic techniques to specific materials. However, they all adequately reflect the current state of affairs in the modern kinetics of thermally stimulated processes.

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The particle image velocimetry method in the study of the dynamics of phase transitions induced by high pressures in triolein and oleic acid

Cited by 7 publications

References 10 publications

Effects of Lipid Solid Mass Fraction and Non-Lipid Solids on Crystallization Behaviors of Model Fats under High Pressure

Effects of Lipid Solid Mass Fraction and Non-Lipid Solids on Crystallization Behaviors of Model Fats under High Pressure

Could RME biodiesel be potentially harmful to modern engine? solidification process in RME

Thermal Analysis Kinetics for Understanding Materials Behavior

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