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 furanoids formation. The present work
研究了氨基酸和 α-二羰基在热加工过程中 Amadori 重排产物 (ARP) 风味形成中的作用。挥发性化合物的比较和它们的浓度时ñ - (1-脱氧α- d-ribulos-1-yl)-甘氨酸在 100 °C 下与不同的氨基酸或乙二醛 (GO) 反应。ARP 模型中的其他氨基酸,例如甘氨酸 (Gly),通过衍生的甲醛的链延长而促进了呋喃类化合物的多样性。而额外谷氨酸的单阴离子充当亲核试剂,有利于 2-乙基-3,5-二甲基吡嗪和 2,5-二甲基吡嗪的形成;额外赖氨酸的非电离氨基参与 α-二羰基的形成,导致 ARP 模型中吡嗪和甲基吡嗪的积累。此外,额外的 GO 的高剂量和 pH 稳定可能促进了 ARP 降解和脱氧酮逆醛醇裂解,导致甲基吡嗪而不是呋喃类化合物的形成。