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Food Funct

Title:		Impact of phloretin and phloridzin on the formation of Maillard reaction products in aqueous models composed of glucose and L-lysine or its derivatives
Author(s):		Ma J; Peng X; Ng KM; Che CM; Wang M;
Address:		"School of Biological Sciences, Department of Chemistry, University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China"
Journal Title:		Food Funct
Year:		2012
Volume:		20111208
Issue:		2
Page Number:		178 - 186
DOI:		10.1039/c1fo10124b
ISSN/ISBN:		2042-650X (Electronic) 2042-6496 (Linking)
Abstract:		"In the present study, the effects of phloretin and phloridzin on the formation of Maillard reaction products in a lysine-glucose model with different reactant ratios were systematically investigated. In terms of the formation of Maillard-type volatiles, phloretin and phloridzin treatmen could significantly reduce their generation, where the effects depend on the ratio of lysine to glucose used in the model systems. Phloretin and phloridzin could also affect the colour development of Maillard reactions; especially phloretin, which could significantly promote the formation of brown products in the system with the lowest ratio of lysine to glucose. Based on the carbon module labelling (CAMOLA) technique and HPLC-DAD-ESI/MS analysis, it was found that phloretin and phloridzin could actively participate in the Maillard reaction and directly react with different reactive carbonyl species. The effect of phloretin and phloridzin treatment in both N(alpha)-acetyllysine-glucose (AC-glu), and N-acetyl-gly-lys methyl ester acetate salt-glucose (AG-glu) model systems, which are close to the Maillard reactions occurring in real food, where the free amino groups of lysine residues were considered as the reactive site, were further investigated. Similar impacts on the formation of Maillard-type volatiles and brown products as in the lysine-glucose models were observed which can also be explained by the capability of phloretin and phloridzin to quench sugar fragments formed in these model reactions"
Keywords:		"Chromatography, Gas/methods Chromatography, High Pressure Liquid Glucose/*chemistry Lysine/*chemistry *Maillard Reaction Mass Spectrometry Models, Chemical Phloretin/*chemistry Phlorhizin/*chemistry Volatile Organic Compounds/chemistry;"
Notes:		"MedlineMa, Jinyu Peng, Xiaofang Ng, Kwan-Ming Che, Chi-Ming Wang, Mingfu eng Comparative Study Research Support, Non-U.S. Gov't England 2011/12/14 Food Funct. 2012 Feb; 3(2):178-86. doi: 10.1039/c1fo10124b. Epub 2011 Dec 8"