INVESTIGADORES
SCHEBOR Carolina Claudia
artículos
Título:
Prediction of the relative humidity for the maximum rate of non-enzymatic browning in food systems
Autor/es:
NURIA ACEVEDO; CAROLINA SCHEBOR; MARÍA DEL PILAR BUERA
Revista:
Research Advances in Food Science
Editorial:
Global Research Network
Referencias:
Año: 2004 vol. 4 p. 153 - 160
Resumen:
<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:ES; mso-fareast-language:ES;} p.MsoCommentText, li.MsoCommentText, div.MsoCommentText {mso-style-noshow:yes; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:ES; mso-fareast-language:ES;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> The kinetics of non-enzymatic browning was analysed in systems of different structural characteristics in a wide range of relative humidities. In matrices with crystallisable sugars (lactose, milk) the maximum rate occurred at relative humidities close to 30% and well above the glass transition temperature (Tg). In highly collapsable polymeric systems the maximum rate occurred close but below Tg, before the sample collapse. In non crystalline systems with small degree of collapse (vegetables, meat) the maximum rate of non-enzymatic browning occurred at relative humidities in a range of 65-80%, well above Tg.