Glycine model

Here we are solely concerned with the light petroleum solubles (designated Fraction A), derived from a xylose/glycine model system. Fraction A was obtained as a yellow solid in 0.05 yield. Analysis by HPLC at 450 nm showed it to consist of at least 25 components (Figure 1), and examination at 315 and 260 nm further increased the number detected. 

Spray drying is extensively used in industry, and therefore spray drying a glucose-glycine model system has specific technological relevance. Compounds 19 and 20 were tentatively identified in the product.174... 

R. C. Borrelli, V. Fogliano, S. M. Monti, and J. M. Ames, Characterization of melanoidins from a glucose-glycine model system, Eur. Food Res. Technol., 2002, 215, 210-215. 

K.-H. Wagner, S. Derkits, M. Herr, W. Schuh, and I. Elmadfa, Antioxidative potential of melanoidins isolated from a roasted glucose-glycine model, Food Chem., 2002, 78,375-382. 

Y. Yoshimura, T. Iijima, T. Watanabe, and H. Nakazawa, Antioxidative effect of Maillard reaction products using glucose-glycine model system, J. Agric. Food Chem., 1997, 45, 4106 1109. 

Umano, K, and Shibamoto, T. (1984). Chemical studies on heated starch/glycine model systems. Agric. Biol. Chem. 48 1387-1393. 

Effect of Acetate Concentration on Maillard Browning in Glucose-Glycine Model Systems... 

It has been found in a glyoxal/glycine model system by Velisek et at. (1976), in the reaction of L-rhamnose with ammonia by Shibamoto and Bernhard (1978), of glutamine with ribose by Ho and Chen (1999). Baltes and Bochmann (1987b) did not find the aldehyde when heating serine and threonine without sucrose. 

Keyhani, A. Yaylayan, V. Elucidation of the mechanism of pyrazinone formation in glycine model systems using labeled sugars and amino acids. Submitted to J. Agric. Food Chem. 

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