Ingredient preparation: the science of tempering

Abstract: This chapter considers tempering from a scientific, rather than practical, perspective. It begins by looking at the importance of tempering as it relates to product quality, before climbing the steps to its understanding. Starting with the polymorphic behaviour of triacylglycerols, it moves on the look at the specific behaviour of cocoa butter, examines how tempering leads to the formation of stable seeds, then looks at how the quality of temper is measured. Finally, comments are made on technologies that may have an impact on tempering in the future.

[1]  Christopher M. Martin,et al.  Structural models of metastable phases occurring during the crystallization process of saturated/unsaturated triacylglycerols , 2007 .

[2]  A. Stapley,et al.  The effect of shear rate, temperature, sugar and emulsifier on the tempering of cocoa butter , 2006 .

[3]  B. Swanson,et al.  Polymorphic transitions of cocoa butter affected by high hydrostatic pressure and sucrose polyesters , 2006 .

[4]  M. Mackley,et al.  The effect of shear on the crystallization of cocoa butter , 2006 .

[5]  R. Hartel,et al.  Surface bloom on improperly tempered chocolate , 2006 .

[6]  L. Nørgaard,et al.  Rapid instrumental methods and chemometrics for the determination of pre‐crystallization in chocolate , 2005 .

[7]  A. Schiraldi,et al.  Polymorphous transitions in cocoa butter , 2005 .

[8]  A. Schiraldi,et al.  Polymorphous transitions in cocoa butter  , 2005 .

[9]  J. Fages,et al.  Micronized cocoa butter particles produced by a supercritical process , 2005 .

[10]  R. Peschar,et al.  Understanding the structure of chocolate , 2004 .

[11]  R. Peschar,et al.  Crystal structures of 1,3-distearoyl-2-oleoylglycerol and cocoa butter in the ?(V) phase reveal the , 2004 .

[12]  M. Miura,et al.  Effect of static magnetic field on crystallization of triacylglycerols , 2004, IEEE transactions on applied superconductivity.

[13]  Richard W. Hartel,et al.  Fat bloom in chocolate and compound coatings , 2004 .

[14]  David J. Pérez-Martínez,et al.  Rheometry and polymorphism of cocoa butter during crystallization under static and stirring conditions , 2004 .

[15]  Alejandro G. Marangoni,et al.  Mechanical properties of cocoa butter in relation to its crystallization behavior and microstructure , 2003 .

[16]  S. Idziak,et al.  Orientation and Phase Transitions of Fat Crystals under Shear , 2003 .

[17]  J. V. D. Streek,et al.  Comparing the morphology of β-n.n.n with β'-n.n+2.n and β'-n.n.n-2 triacylglycerol crystals , 2003 .

[18]  R. E. Timms,et al.  Confectionery fats handbook: Properties, production and application , 2003 .

[19]  K. Roberts,et al.  Identification of the Initial Nucleating Form Involved in the Thermal Processing of Cocoa Butter Fat as Examined Using Wide Angle X-ray Scattering (WAXS) , 2003 .

[20]  Alejandro G. Marangoni,et al.  Relationship between Crystallization Behavior and Structure in Cocoa Butter , 2003 .

[21]  K. Roberts,et al.  In Situ Small Angle X-ray Scattering (SAXS) Studies of Polymorphism with the Associated Crystallization of Cocoa Butter Fat Using Shearing Conditions , 2002 .

[22]  R. Peschar,et al.  Effect of temperature on recrystallization behavior of cocoa butter , 2001 .

[23]  Kiyotaka Sato,et al.  Crystallization Properties of Cocoa Butter , 2001 .

[24]  Nissim Garti,et al.  Crystallization processes in fats and lipid systems , 2001 .

[25]  J. Yano,et al.  Atomic resolution structure analysis of beta' polymorph crystal of a triacylglycerol: 1,2-dipalmitoyl-3-myristoyl-sn-glycerol. , 2001, Journal of lipid research.

[26]  R. Peschar,et al.  Structure of CnCn+2Cn-type (n = even) β′-triacylglycerols , 2000 .

[27]  Durant,et al.  Molecular analysis of the beta-polymorphic form of trielaidin: crystal structure at low temperature , 2000, Acta crystallographica. Section B, Structural science.

[28]  Henk Schenk,et al.  Phase behavior and extended phase scheme of static cocoa butter investigated with real-time X-ray powder diffraction , 1999 .

[29]  R. Peschar,et al.  Structure of mono-acid even-numbered β-triacylglycerols , 1999 .

[30]  M. Ollivon,et al.  Phase transitions and polymorphism of cocoa butter , 1998 .

[31]  S. Bolliger,et al.  Comparison of precrystallization of chocolate , 1998 .

[32]  M. Ollivon,et al.  Dynamic Crystallization of Dark Chocolate as Affected by Temperature and Lipid Additives , 1998 .

[33]  Y. Amemiya,et al.  Synchrotron Radiation X-ray Diffraction Study of Liquid Crystal Formation and Polymorphic Crystallization of SOS (sn-1,3-Distearoyl-2-oleoyl Glycerol) , 1997 .

[34]  G. Ponchel,et al.  Fat Bloom and Chocolate Structure Studied by Mercury Porosimetry , 1997 .

[35]  M. Ollivon,et al.  Tempering of Chocolate in a Scraped Surface Heat Exchanger , 1997 .

[36]  R. Peschar,et al.  Real-time X-ray powder diffraction investigations on cocoa butter. III. Direct β-crystallization of cocoa butter: Occurrence of a memory effect , 1996 .

[37]  M. Rappaz,et al.  Crystallization kinetics of the pure triacylglycerols glycerol-1,3-dipalmitate-2-oleate, glycerol-1-palmitate-2-oleate-3-stearate, and glycerol-1,3-distearate-2-oleate , 1996 .

[38]  G. Ziegler,et al.  Tempering method for chocolate containing milk-fat fractions , 1996 .

[39]  P. Dimick,et al.  Dynamic crystallization of cocoa butter. I. characterization of simple lipids in rapid- and slow-nucleating cocoa butters and their seed crystals , 1995 .

[40]  R. Hartel,et al.  Effect of milk fat fractions on fat bloom in dark chocolate , 1994 .

[41]  M. Jeffery The effect of cocoa butter origin, milk fat and lecithin levels on the temperability of cocoa butter systems , 1993 .

[42]  Kiyotaka Sato,et al.  Polymorphism of pos. I. occurrence and polymorphic transformation , 1991 .

[43]  Kiyotaka Sato,et al.  Polymorphism of POP and SOS III. Solvent crystallization of β2 and β1 polymorphs , 1989 .

[44]  P. Dimick,et al.  Isolation and thermal characterization of high-melting seed crystals formed during cocoa butter solidification , 1989 .

[45]  P. Dimick,et al.  Lipid composition of high-melting seed crystals formed during cocoa butter solidification , 1989 .

[46]  T. Koyano,et al.  Polymorphism of POP and SOS. II. kinetics of melt crystallization , 1989 .

[47]  Kiyotaka Sato,et al.  Polymorphism of POP and SOS. I. occurrence and polymorphic transformation , 1989 .

[48]  Kiyotaka Sato,et al.  Seeding Effects on Crystallization Behavior of Cocoa Butter , 1989 .

[49]  Bernard W. Minifie Chocolate, Cocoa, and Confectionery , 1989 .

[50]  N. Garti,et al.  Reconsideration of polymorphic transformations in cocoa butter using the DSC , 1988 .

[51]  N. Garti,et al.  Crystallization and polymorphism of fats and fatty acids , 1988 .

[52]  R E Timms,et al.  Phase behaviour of fats and their mixtures. , 1984, Progress in lipid research.

[53]  R. Timms The phase behaviour of mixtures of cocoa butter and milk fat. , 1980 .

[54]  R. Feuge,et al.  Effect of liquid fat on melting point and polymorphic behavior of cocoa butter and a cocoa butter fraction , 1976 .

[55]  E. Akehurst,et al.  Cocoa butter and confectionery fats. Studies using programmed temperature X-ray diffraction and differential scanning calorimetry , 1971 .

[56]  H. Hendrickx,et al.  Polymorphism of Cocoa Butter, shown by differential scanning calorimetry , 1971 .

[57]  Bernard W. Minifie Chocolate, Cocoa and Confectionery: Science and Technology , 1970 .

[58]  K. Becker,et al.  Über die Kristallstruktur der Kakaobutter , 1969 .

[59]  J. Rossell Phase diagrams of triglyceride systems. , 1967, Advances in lipid research.

[60]  E. Lutton,et al.  Polymorphism of cocoa butter , 1966, Journal of the American Oil Chemists' Society.

[61]  K Larsson,et al.  Classification of glyceride crystal forms. , 1966, Acta chemica Scandinavica.

[62]  R. Feuge,et al.  Solidification of cocoa butter , 1965 .

[63]  H. Vos Bestimmung der Erstarrungskurven von Fetten mit Hilfe des Shukoff‐Apparates , 1965 .