Characteristic flavor formation of thermally processed N-(1-deoxy-α-d-ribulos-1-yl)-glycine: Decisive role of additional amino acids and promotional effect of glyoxal
作者:Huan Zhan、Heping Cui、Junhe Yu、Khizar Hayat、Xian Wu、Xiaoming Zhang、Chi-Tang Ho
DOI:10.1016/j.foodchem.2021.131137
日期:2022.3
5-dimethylpyrazine formation; the nonionized amino group of additional lysine were involved in α-dicarbonyls formation, causing pyrazine and methylpyrazine accumulation in the ARP model. Moreover, the high dosage and pH stabilization of additional GO probably promoted the ARP degradation and deoxyosones retro-aldol cleavage, resulting in methylpyrazine rather than furanoidsformation. The present work
Acyclic Tautomers in Crystalline Carbohydrates: The Keto Forms of 1-Deoxy-1-carboxymethylamino-<scp>d</scp>-2-pentuloses (Pentulose-glycines)
作者:Valeri V. Mossine、Charles L. Barnes、Milton S. Feather、Thomas P. Mawhinney
DOI:10.1021/ja0282184
日期:2002.12.1
diffraction studies on acycliccarbohydrate keto tautomers of N-(1-deoxy-d-erythro-2-pentulos-1-yl)- and N-(1-deoxy-d-threo-2-pentulos-1-yl)glycines (ribulose-glycine, 1 and xylulose-glycine, 2), are reported. In aqueous solutions, both 1 and 2 exist as a tautomeric mixture, with the beta-furanose as a major form, followed by the alpha-furanose and the acyclic keto tautomer. Both 1 and 2 crystallize