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European Food Research and Technology

, Volume 218, Issue 1, pp 62–67 | Cite as

Fast conching for milk chocolate

  • Siegfried BolenzEmail author
  • Thomas Thiessenhusen
  • Rita Schäpe
Original Paper

Abstract

The objective of the study was to shorten the conventional conching process for milk chocolate, which still takes many hours, in order to increase productivity. Due to recent findings and to progress made in raw material treatment, a hypothesis was proposed: that flavour development in the conch could be less important for milk chocolate than it certainly is for dark chocolate. Other functions of conching, like water removal and fat covering of particles, could be achieved faster by using drier raw materials and by machines applying more shear force. For the experiments, a conventional process (taking 5 hours) was condensed into 30–90 minutes. In screening trials various flake pre-drying techniques were also tested. Samples produced were analysed for particle size and flow properties, as well as by a trained sensory panel. Results from the experimental design showed best results at 60–90 minutes conching time. Probably the procedures for flake pre-drying had little or no influence under the conditions used. Verification trials compared the fast conching procedure to the standard process using two different recipes. No relevant differences in physical or sensory properties were found between samples from standard and 90-minute-fast-conching, proving that under favourable conditions conching times for milk chocolates can be drastically reduced without negative impact on product properties and perception.

Keywords

Milk chocolate Conch Productivity Rheology Sensory analysis 

Notes

Acknowledgements

The project was sponsored by the AiF/BMBF program “Anwendungsorientierte Forschung an Fachhochschulen”, project 1702200. In particular we would like to thank the members of our sensory panel.

References

  1. 1.
    Bolenz S, Meier J, Schäpe R (2000) Zucker- und Süßwarenwirtschaft 53(9):270Google Scholar
  2. 2.
    Bolenz S, Meier J, Schäpe R (2000) Zucker- und Süßwarenwirtschaft 53(10):309Google Scholar
  3. 3.
    Kleinert J (1997) Handbuch der Kakaoverarbeitung und Schokoladeherstellung. 1st edn. Behr’s Verlag, Hamburg, p133–146, 158–170Google Scholar
  4. 4.
    Beckett ST (ed) (1990) Moderne Schokoladentechnologie, 1st edn. Behr’s Verlag, Hamburg, p109–124, 165–231Google Scholar
  5. 5.
    Ziegleder G (1996) Süsswaren 40(9):22Google Scholar
  6. 6.
    Ziegleder G (1996) Süsswaren 40(10):60Google Scholar
  7. 7.
    Ziegleder G (1997) Süsswaren 41(11):44Google Scholar
  8. 8.
    Ziegleder G (1997) Süsswaren 41(12):20Google Scholar
  9. 9.
    Boller E, Braun P (2001) Zucker- und Süßwarenwirtschaft 54:28Google Scholar
  10. 10.
    Kleinert J (1971) RIC 26:2 (Swiss Patent Nr. 19164/1969)Google Scholar
  11. 11.
    Bolenz S, Rosenkranz P, Schäpe R (2002) Zucker- und Süßwarenwirtschaft 55:15Google Scholar
  12. 12.
    Bolenz S, Thiessenhusen T, Schäpe R (2003) Eur Food Res Technol 216:28Google Scholar
  13. 13.
    Franke K, Heinzelmann K, Tscheuschner H-D (2002) Zucker- und Süßwarenwirtschaft 55:16Google Scholar
  14. 14.
    European Council (1973) Directive 73/241/EECGoogle Scholar
  15. 15.
    ECHIP (2003) Software for the design of experiments: reference manual. ECHIP Inc, HockessinGoogle Scholar
  16. 16.
    Atkinson AC, Donev AN (1992) Optimum experimental designs. Oxford University Press, NYGoogle Scholar
  17. 17.
    Weipert D, Tscheuschner HD, Windhab E (1993) Rheologie der Lebensmittel. Behr’s Verlag, HamburgGoogle Scholar
  18. 18.
    Aeschlimann JM, Beckett ST (2000) J Texture Studies 31:541Google Scholar
  19. 19.
    O’Mahony M (1985) Sensory evaluation of food, statistical methods and procedures. Marcel Dekker, New YorkGoogle Scholar
  20. 20.
    Fliedner I, Wilhelmi F (1993) Grundlagen und Prüfverfahren der Lebensmittelsensorik, 2nd edn. Behr’s Verlag, HamburgGoogle Scholar
  21. 21.
    Stone H, Sidel J (1993) Sensory evaluation practices. Academic, San DiegoGoogle Scholar
  22. 22.
    Guinard JX, Mazzucchelli R (1999) J Sci Food Agric 79:1331CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • Siegfried Bolenz
    • 1
    Email author
  • Thomas Thiessenhusen
    • 1
  • Rita Schäpe
    • 1
  1. 1.Lebensmitteltechnologie–Food TechnologyFachhochschule Neubrandenburg–University of Applied SciencesNeubrandenburgGermany

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