Chemical characterization of diketopiperazines in beer

M Gautschi, JP Schmid, TL Peppard…

Index: Gautschi, Markus; Schmid, Joachim P.; Peppard, Terry L.; Ryan, Thomas P.; Tuorto, Raymond M.; Yang, Xiaogen Journal of Agricultural and Food Chemistry, 1997 , vol. 45, # 8 p. 3183 - 3189

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Citation Number: 59

Abstract

Diketopiperazines (DKPs) corresponding to cyclic dipeptides have been detected in a variety of natural products as well as in processed foods, beverages, and food and beverage ingredients. A series of seven proline-based diketopiperazines, namely, cyclo (Ala-Pro), cyclo (Val-Pro), cyclo (Ile-Pro), cyclo (Leu-Pro), cyclo (Met-Pro), cyclo (Phe-Pro), and cyclo (Pro-Pro), has now been identified in beer. A marketplace cross-section of five commercial ...

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