Forschungsbericht 2016



Migration in fat based particulate food composites - An approach to understand fat blooming in chocolate -

Institut: V-3
Projektleitung: Stefan Heinrich
Mitarbeiter/innen: Svenja Kristin Lügger
Laufzeit: 01.10.2012 — 30.09.2016
Finanzierung:Drittmittel/Industrie
Kooperationen:Nestlè S.A.

Blooming of chocolate is the major problem of the confectionery industry. It is the formation of visible white spots or a greyish haze on the chocolate surface, which leads to rejection by the consumer. Blooming of chocolate is due to large sugar or fat crystals on the chocolate surface, denoted as sugar or fat blooming, respectively.

The formation of chocolate blooming is often related to migration of sugar or lipid molecules to the surface with subsequent uncontrolled recrystallization.

The aim of the project is to understand the migration pathway and driving forces of lipid migration in chocolate. Chocolate is composed of particles, which are embedded in a continuous fat matrix. Thus, migration can take place through the matrix material, through the particle phase or at the interface between particles and matrix

Stichworte

  • Lebensmittel
  • Lebensmittelindustrie

Publikationen

  • Reinke, Svenja K. and Hauf, Katharina and Vieira, Joselio and Heinrich, Stefan and Palzer, Stefan: Changes in contact angle providing evidence for surface alteration in multi-component solid foods. Journal of Physics D-Applied Physics, 48(46), 2015. , DOI: 10.1088/0022-3727/48/46/464001
  • Reinke, Svenja K. and Wilde, Fabian and Kozhar, Sergii and Beckmann, Felix and Vieira, Jos\'elio and Heinrich, Stefan and Palzer, Stefan: Synchrotron X-Ray microtomography reveals interior microstructure of multicomponent food materials such as chocolate. Journal of Food Engineering, 174: S. 37--46, 2016. , DOI: 10.1016/j.jfoodeng.2015.11.012
  • Reinke, Svenja K. and Roth, Stephan V. and Santoro, Gonzalo and Vieira, Joselio and Heinrich, Stefan and Palzer, Stefan: Tracking Structural Changes in Lipid-based Multicomponent Food Materials due to Oil Migration by Microfocus Small-Angle X-ray Scattering. ACS applied materials & interfaces, 7(18): S. 9929--9936, 2015. , DOI: 10.1021/acsami.5b02092