Influence of Baking Conditions on Bread Characteristics and Acrylamide Concentration

The effect of baking temperature (vault and hearth) and steam injection on bread characteristics and acrylamide content was investigated using a central composite design. Breads were baked in a stone oven (1 m² internal baking surface). Response variables measured were specific volume, crumb porosity, crust to crumb ratio, crumb hardness, median gas cell size, crust coloration and acrylamide concentration. The specific volume, crumb porosity, crumb hardness and median gas cell diameter were mainly affected by the stone temperature and steam injection level. Highest specific volume (5 mL.g-1) and crumb porosity (86%) were obtained at highest stone temperature (230°C) and steam level (300 mL). At the same baking conditions and highest vault temperature (230°C), a minimal crumb hardness and median gas cell diameter were attained, as well. A negative linear correlation between the specific volume (crumb porosity) of the bread and its textural properties (crumb hardness and median gas cell diameter) was found. Vault temperature mainly influenced crust characteristics. Thus, increased vault temperature increased the crust coloration and crust crumb ratio. Vault temperature and steaming were found to have greatest effect on acrylamide concentration. As they were increased the acrylamide concentration increased, too. Additionally, a strong correlation between crust color and acrylamide concentration was observed. As the crust total color difference increased up to 20-25, acrylamide concentration increased linearly. However, for a higher level of crust coloration the acrylamide concentration was found to leveling out or even to decrease slowly.

[1]  M. Murkovic,et al.  Factors affecting the formation of acrylamide in coffee. , 2018 .

[2]  F. Escher,et al.  Ways to reduce the acrylamide formation in cracker products , 2018 .

[3]  A. Le-Bail,et al.  Influence of the amount of steaming during baking on the kinetic of heating and on selected quality attributes of bread , 2011 .

[4]  Gilles Trystram,et al.  Crust formation and its role during bread baking. , 2009 .

[5]  M. Friedman,et al.  Review of methods for the reduction of dietary content and toxicity of acrylamide. , 2008, Journal of agricultural and food chemistry.

[6]  A. Mondal,et al.  Bread baking – A review , 2008 .

[7]  R. Carle,et al.  Impact of formulation and technological factors on the acrylamide content of wheat bread and bread rolls , 2008 .

[8]  V. Fogliano,et al.  Mitigation Strategies to Reduce Acrylamide Formation in Fried Potato Products , 2008, Annals of the New York Academy of Sciences.

[9]  R. Carle,et al.  Acrylamide in cereal products: A review , 2008 .

[10]  L. Ahrné,et al.  Effect of crust temperature and water content on acrylamide formation during baking of white bread: Steam and falling temperature baking , 2007 .

[11]  A.J.B. van Boxtel,et al.  Quality prediction of bakery products in the initial phase of process design , 2007 .

[12]  Denis Flick,et al.  Effects of crust constraints on bread expansion and CO2 release , 2007 .

[13]  B. Baik,et al.  Influences of Baking and Thawing Conditions on Quality of Par-Baked French Bread , 2007 .

[14]  Kerstin Skog,et al.  Acrylamide and other hazardous compounds in heat-treated foods. , 2006 .

[15]  Ashim K. Datta,et al.  Mathematical modeling of bread baking process , 2006 .

[16]  S. Knutsen,et al.  Effect of temperature and time on the formation of acrylamide in starch-based and cereal model systems, flat breads and bread , 2005 .

[17]  R. Waniska,et al.  Impact of different baking processes on bread firmness and starch properties in breadcrumb , 2005 .

[18]  P. Åman,et al.  Factors influencing acrylamide content and color in rye crisp bread. , 2005, Journal of agricultural and food chemistry.

[19]  Hubert Chiron,et al.  An instrumented pilot scale oven for the study of French bread baking , 2005 .

[20]  S. Sahin,et al.  Optimization of halogen lamp–microwave combination baking of cakes: a response surface methodology study , 2005 .

[21]  J. Elmore,et al.  Measurement of acrylamide and its precursors in potato, wheat, and rye model systems. , 2005, Journal of agricultural and food chemistry.

[22]  R. Moreira,et al.  Reduction of Acrylamide Formation in Potato Chips by Low-temperature Vacuum Frying , 2004 .

[23]  I. Blank,et al.  A Review of Acrylamide: An Industry Perspective on Research, Analysis, Formation, and Control , 2004, Critical reviews in food science and nutrition.

[24]  S. Sahin,et al.  Optimization of bread baking in a halogen lamp–microwave combination oven by response surface methodology , 2004 .

[25]  F. Escher,et al.  Acrylamide in gingerbread: critical factors for formation and possible ways for reduction. , 2004, Journal of agricultural and food chemistry.

[26]  P. Åman,et al.  Effects of asparagine, fructose, and baking conditions on acrylamide content in yeast-leavened wheat bread. , 2004, Journal of agricultural and food chemistry.

[27]  L. Ehrenberg,et al.  Investigations of factors that influence the acrylamide content of heated foodstuffs. , 2003, Journal of agricultural and food chemistry.

[28]  M. Biedermann,et al.  Model studies on acrylamide formation in potato, wheat flour and corn starch; ways to reduce acrylamide contents in bakery ware , 2003 .

[29]  M. Biedermann,et al.  French fries with less than 100 μg/kg acrylamide. A collaboration between cooks and analysts , 2003 .

[30]  D. Zyzak,et al.  Acrylamide formation mechanism in heated foods. , 2003, Journal of agricultural and food chemistry.

[31]  M. Jung,et al.  A Novel Technique for Limitation of Acrylamide Formation in Fried and Baked Corn Chips and in French Fries , 2003 .

[32]  B. Lau,et al.  Acrylamide in foods: occurrence, sources, and modeling. , 2003, Journal of agricultural and food chemistry.

[33]  Nantawan Therdthai,et al.  Optimisation of the temperature profile in bread baking , 2002 .

[34]  Martin G. Scanlon,et al.  Cellular Structure of Bread Crumb and its Influence on Mechanical Properties , 2002 .

[35]  Eden Tareke,et al.  Analysis of acrylamide, a carcinogen formed in heated foodstuffs. , 2002, Journal of agricultural and food chemistry.

[36]  Urban Wählby,et al.  Reheating characteristics of crust formed on buns, and crust formation , 2002 .

[37]  Murat Ozdemir,et al.  Analysis of color development during roasting of hazelnuts using response surface methodology , 2000 .

[38]  Hans Janestad,et al.  A model for simultaneous heat, water and vapour diffusion , 1999 .

[39]  Shyam S. Sablani,et al.  Modeling of Simultaneous Heat and Water Transport in the Baking Process , 1998 .

[40]  R. H. Myers,et al.  Response Surface Methodology: Process and Product Optimization Using Designed Experiments , 1995 .

[41]  Bruno Zanoni,et al.  Modelling of browning kinetics of bread crust during baking , 1995 .

[42]  A. Eliasson,et al.  Cereals in Breadmaking: A Molecular Colloidal Approach , 1993 .

[43]  C. Rosell,et al.  Effect of the amount of steam during baking on bread crust features and water diffusion , 2012 .

[44]  Simoneau Catherine,et al.  Food contact material for baking: a review on associated chemical risks and technological issues , 2011 .

[45]  R. Stadler.  2 – The formation of acrylamide in cereal products and coffee , 2006 .

[46]  Marie-Françoise Devaux,et al.  French Bread Loaf Volume Variations and Digital Image Analysis of Crumb Grain Changes Induced by the Minor Components of Wheat Flour , 2005 .

[47]  Kit L. Yam,et al.  A simple digital imaging method for measuring and analyzing color of food surfaces , 2004 .

[48]  N. Haase,et al.  Pommes frites: Einflussmöglichkeiten auf den Acrylamidgehalt. , 2003 .

[49]  Thomas Fischer,et al.  Acrylamidbildung in Backwaren , 2003 .

[50]  I. Blank,et al.  Food chemistry: Acrylamide from Maillard reaction products , 2002, Nature.

[51]  B. Gutsche,et al.  Formation of acrylamide in heated potato products - model experiments pointing to asparagine as precursor , 2002 .

[52]  Martin G. Scanlon,et al.  Bread properties and crumb structure , 2001 .

[53]  Marie-Françoise Devaux,et al.  Description of the textural appearance of bread crumb by video image analysis , 1992 .

[54]  R. C. Hoseney,et al.  Gas retention of different cereal flours , 1991 .

[55]  E. J. Pyler,et al.  Baking science & technology , 1988 .

[56]  S. Barber,et al.  Un modelo de evaluación de la calidad de panes típicos regionales , 1987 .

[57]  Terence J McMaster,et al.  Thermal Processing and Quality of Foods , 1984 .