Difference between revisions of "Starch Conversion"

From German brewing and more
Jump to: navigation, search
 
Line 1: Line 1:
 
[[Image:Work_in_progress.jpg]]
 
[[Image:Work_in_progress.jpg]]
 +
 +
[Shetty, 2006]:
 +
 +
- gelatinization: heating in excess water, endothermic reaction, loss of crystalline order
 +
- irreversible w/r to the shape of the granule
 +
- amylopecting and amylose may form new structures when cooled down -> retrogradation
 +
- during heating -> swelling to up to 30x its weight. reversible process
 +
- retrogradation is cause for hard stale bread
 +
 +
  
 
* gelatinization
 
* gelatinization
Line 5: Line 15:
 
* emzyme temperature and pH optima
 
* emzyme temperature and pH optima
 
* mash parameters affecting conversion
 
* mash parameters affecting conversion
 +
 +
 +
=References=
 +
 +
:[Valclavik] Vickie A. Valclavik, Elizabeth W. Christian, ''Essentials of Food Science'', Third Edition, Springer
 +
:[Champe] Pamela C, Champe, Richard A. Harvey, Denise R. Ferrier, ''Biochemistry'', Lippincott's Illustrated Reviews
 +
:[Kunze, 2007] Wolfgang Kunze, ''Technologie Brauer und Maelzer'', 9. Auflage, VLB Berlin
 +
:[Narziss, 2005] Prof. Dr. agr. Ludwig  Narziss, Prof. Dr.-Ing. habil. Werner Back, ''Abriss der Bierbrauerei'', Technische Universitaet Muenchen (Fakultaet fuer Brauwesen, Weihenstephan). WILEY-VCH Verlags GmbH Weinheim Germany, 2005
 +
:[Donald, 2004] A. M. Donald, ''Understanding Starch Stucture and Functionality'', Chapter 5 in ''Starch in Food: Structure, Function and Applications'' By Ann-Charlotte Eliasson, CRC Press, 2004
 +
:[Shetty, 2006] Kalidas Shetty, ''Food Biotechnology'', CRC Press, 2006

Revision as of 03:08, 7 January 2009

Work in progress.jpg

[Shetty, 2006]:

- gelatinization: heating in excess water, endothermic reaction, loss of crystalline order - irreversible w/r to the shape of the granule - amylopecting and amylose may form new structures when cooled down -> retrogradation - during heating -> swelling to up to 30x its weight. reversible process - retrogradation is cause for hard stale bread


  • gelatinization
  • active enzymes
  • emzyme temperature and pH optima
  • mash parameters affecting conversion


References

[Valclavik] Vickie A. Valclavik, Elizabeth W. Christian, Essentials of Food Science, Third Edition, Springer
[Champe] Pamela C, Champe, Richard A. Harvey, Denise R. Ferrier, Biochemistry, Lippincott's Illustrated Reviews
[Kunze, 2007] Wolfgang Kunze, Technologie Brauer und Maelzer, 9. Auflage, VLB Berlin
[Narziss, 2005] Prof. Dr. agr. Ludwig Narziss, Prof. Dr.-Ing. habil. Werner Back, Abriss der Bierbrauerei, Technische Universitaet Muenchen (Fakultaet fuer Brauwesen, Weihenstephan). WILEY-VCH Verlags GmbH Weinheim Germany, 2005
[Donald, 2004] A. M. Donald, Understanding Starch Stucture and Functionality, Chapter 5 in Starch in Food: Structure, Function and Applications By Ann-Charlotte Eliasson, CRC Press, 2004
[Shetty, 2006] Kalidas Shetty, Food Biotechnology, CRC Press, 2006