不同茶叶中游离氨基酸的对映异构体
朱荫,张悦,严寒,吕海鹏,林智

Enantiomeric Analysis of Free Amino Acids in Different Teas
ZHU Yin,ZHANG Yue,YAN Han,LÜ HaiPeng,LIN Zhi
表1 游离氨基酸对映异构体定性参数
Table 1 The qualitative parameters of the amino acid enantiomers
序号 No. 名称 Compound 保留时间Retention time[1] 定性离子Qualitative ion[2]
1-2 丙氨酸 Alanine (Ala) 4.306, 5.125 190, 43, 218
3-4 缬氨酸 Valine (Val) 5.940, 6.642 218, 55, 203, 164
5-6 苏氨酸 Threonine (Thr) 6.663, 7.506 203, 43, 248, 366
7-8 异亮氨酸 Isoleucine (Isoleu) 7.504, 8.982 232, 69, 43, 203, 221
9-10 亮氨酸 Leucine (Leu) 9.780, 11.621 190, 69, 43
11-12 脯氨酸 Proline (Pro) 9.499, 9.667 216, 69, 43, 119
13-14 丝氨酸 Serine (Ser) 10.612, 11.262 189, 43, 119, 69, 234
15-16 半胱氨酸 Cysteine (Cys) 15.998, 16.254 190, 220, 103, 368
17-18 天冬氨酸 Aspartic acid (Asp) 16.622, 16.909 234, 189, 43
19-20 蛋氨酸 Methionine (Met) 18.680, 20.007 61, 75, 43, 131, 203
21-22 苯丙氨酸 Phenylalanine (Phe) 21.049, 22.095 91, 266, 190, 148
23-24 谷氨酸 Glutamic acid (Glu) 21.546, 22.581 202, 276, 85, 248, 230
25-26 酪氨酸 Tyrosine (Tyr) 27.693, 28.562 252, 428, 352, 310
27-28 赖氨酸 Lysine (Lys) 32.653, 32.995 230,176, 420,394,67
29-30 色氨酸 Tryptophan (Try) 36.385, 37.729 276, 130, 333