Details
| Original language | English |
|---|---|
| Journal | European Food Research and Technology |
| Early online date | 14 Apr 2024 |
| Publication status | E-pub ahead of print - 14 Apr 2024 |
| Externally published | Yes |
Abstract
Chocolate mass is a cocoa butter-based suspension, which mainly consists of sugar and cocoa particles dispersed in a continuous lipid phase. During chocolate manufacturing, sugar particles have to be ground to sizes below 25–30 µm. Such a fine grinding is carried out either by five roll refiners or by ball mills. Despite obtaining similar particle size distributions at the end, the grinding procedures result in different chocolate mass properties. The reasons for that are not fully understood, so far. Therefore, changes in particle sizes and surface properties of sucrose particles as well as their interactions with surrounding cocoa butter during the different grinding processes were investigated including atomic force microscopy techniques to characterize local surface states. It was found that especially the alteration of surfaces during continued grinding differed. In the case of roller grinding, surface states became more inhomogeneous and different surfaces states at microscopic level existed in parallel. More homogenous surfaces but with a higher degree of amorphous states were formed during grinding in the ball mill. Variations in macroscopic behavior of the suspension can be explained by the differences in interaction of particles with each other and with the surrounding lipid phase.
Keywords
- Amorphization, Atomic force microscopy AFM, Cocoa butter-based suspension, Sucrose grinding, Surface properties
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
- Agricultural and Biological Sciences(all)
- Food Science
- Chemistry(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: European Food Research and Technology, 14.04.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Changes of surface properties of sucrose particles during grinding in a cocoa butter-based suspension and their influence on the macroscopic behavior of the suspension
AU - Franke, Knut
AU - Bindrich, Ute
AU - Schroeder, Sarah
AU - Heinz, Volker
AU - Middendorf, Dana
N1 - Publisher Copyright: © The Author(s) 2024.
PY - 2024/4/14
Y1 - 2024/4/14
N2 - Chocolate mass is a cocoa butter-based suspension, which mainly consists of sugar and cocoa particles dispersed in a continuous lipid phase. During chocolate manufacturing, sugar particles have to be ground to sizes below 25–30 µm. Such a fine grinding is carried out either by five roll refiners or by ball mills. Despite obtaining similar particle size distributions at the end, the grinding procedures result in different chocolate mass properties. The reasons for that are not fully understood, so far. Therefore, changes in particle sizes and surface properties of sucrose particles as well as their interactions with surrounding cocoa butter during the different grinding processes were investigated including atomic force microscopy techniques to characterize local surface states. It was found that especially the alteration of surfaces during continued grinding differed. In the case of roller grinding, surface states became more inhomogeneous and different surfaces states at microscopic level existed in parallel. More homogenous surfaces but with a higher degree of amorphous states were formed during grinding in the ball mill. Variations in macroscopic behavior of the suspension can be explained by the differences in interaction of particles with each other and with the surrounding lipid phase.
AB - Chocolate mass is a cocoa butter-based suspension, which mainly consists of sugar and cocoa particles dispersed in a continuous lipid phase. During chocolate manufacturing, sugar particles have to be ground to sizes below 25–30 µm. Such a fine grinding is carried out either by five roll refiners or by ball mills. Despite obtaining similar particle size distributions at the end, the grinding procedures result in different chocolate mass properties. The reasons for that are not fully understood, so far. Therefore, changes in particle sizes and surface properties of sucrose particles as well as their interactions with surrounding cocoa butter during the different grinding processes were investigated including atomic force microscopy techniques to characterize local surface states. It was found that especially the alteration of surfaces during continued grinding differed. In the case of roller grinding, surface states became more inhomogeneous and different surfaces states at microscopic level existed in parallel. More homogenous surfaces but with a higher degree of amorphous states were formed during grinding in the ball mill. Variations in macroscopic behavior of the suspension can be explained by the differences in interaction of particles with each other and with the surrounding lipid phase.
KW - Amorphization
KW - Atomic force microscopy AFM
KW - Cocoa butter-based suspension
KW - Sucrose grinding
KW - Surface properties
U2 - 10.1007/s00217-024-04542-8
DO - 10.1007/s00217-024-04542-8
M3 - Article
AN - SCOPUS:85190424627
JO - European Food Research and Technology
JF - European Food Research and Technology
SN - 1438-2377
ER -