Maillard reaction during storage of powder enteral formulas

Mono- and disaccharide compositions and Maillard reaction development in four powder enteral formulas were determined. Also, a study of the changes in this carbohydrate fraction as well as the progress of Maillard reaction during storage of two samples, under different temperature and time conditions and water a activity of 0.44, was carried out. le amounts of fructose, glucose, lactose, sucrose, maltose and maltulose were detected in the studied samples. Furosine (ε-2-furoylmethyl lysine), was present in the four enteral samples studied whereas 2-furoylmethyl alanine (2-FM-Ala) and α-2-furoylmethyl lysine were only present in two samples. e at 30 and 50 °C produced slight changes in carbohydrate composition. At the two temperatures assayed the same level of carbohydrate was found at the end of storage period studied. The maltose/maltulose ratio did not suffer notable changes under moderately-severe conditions of storage. Furosine, 2-FM-Ala and α-2-furoylmethyl lysine content increased during storage, and the formation of 2-furoylmethyl arginine was detected in one stored sample. s seem to indicate that 2-furoylmethyl derivatives of lysine, alanine and arginine could be used as good indicators of storage conditions of powder enteral formulas. Moreover, the maltose/maltulose ratio may be a quality indicator of the processing conditions during manufacture of commercial enteral products.