Engineering effect of oleogels with different structuring mechanisms on the crystallization behavior of cocoa butter
1College of Food Science and Technology, Henan Agricultural University, Zhengzhou 450002, China; School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
Abstract:
As promising cocoa butter (CB) alternatives, oleogels have the potential to prevent fat blooms of chocolate. We aimed to explore possible reasons for the bloom resistance of oleogels by investigating the crystallization behavior of CB-oleogel blends, including crystallization kinetics, thermodynamic properties, crystal polymorphism, and oil distribution. Oleogels structured by monoglyceric stearate (MO), β-sitosterol/lecithin (SLO), and ethylcellulose (EO) were selected as representative oleogels with various structuring-mechanisms. Crystallization kinetic results showed that the crystallization dimension of CB-oleogel increased with the oleogel proportion (from one-dimensional to multi-dimensional), confirming that CB crystallization was inhibited. The presence of liquid oil and oleogelators in oleogels may increase the free energy barrier for CB crystallization. The proton mobility of liquid oil in CB-MO was lower because MO was more tightly bound to CB. The crystallization mechanism of the CB-oleogel suggested that the inhibitory effect of oleogels on CB crystallization delayed the polymorphic transition, thereby improving the bloom stability of chocolate.
More Related Videos
Related Concept Videos
Recrystallization: Solid–Solution Equilibria
Polymer Classification: Crystallinity
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Crystal Growth: Principles of Crystallization
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
Colloids


