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2 游离氨基酸对映异构体的回收率及RSD值（%）

Table 2 Recoveries and RSDs (%) for free amino acid enantiomers

序号 No. 名称 Name 添加量 Added (nmol) 回收率 Recovery (%) RSD (%) 添加量 Added (nmol) 回收率 Recovery (%) RSD (%) D L D L D L D L D L D L 1-2 Ala 10.00 10.00 78.53 88.70 6.59 7.42 100.0 100.0 92.36 102.2 8.93 5.80 3-4 Val 12.50 12.50 80.36 92.57 7.89 6.52 125.0 125.0 85.72 95.69 10.23 6.79 5-6 Thr 50.00 50.00 90.37 95.10 5.69 7.89 200.0 200.0 100.2 105.6 4.33 8.97 7-8 Isoleu 25.00 25.00 85.32 96.32 10.12 8.98 150.0 150.0 110.8 92.63 8.56 9.67 9-10 Leu 5.00 5.00 76.53 88.90 11.52 8.98 50.00 50.00 86.26 82.02 7.58 9.33 11-12 Pro 10.00 10.00 98.57 96.23 2.69 3.98 100.0 100.0 121.8 118.4 9.56 7.46 13-14 Ser 50.00 50.00 114.2 86.97 7.46 9.87 200.0 200.0 96.35 104.5 2.32 9.08 15-16 Cys 50.00 50.00 123.6 115.9 13.12 12.08 200.0 200.0 121.3 119.2 9.63 7.89 17-18 Asp 100.0 100.0 98.45 89.63 4.69 7.41 500.0 500.0 85.23 94.12 1.48 7.56 19-20 Met 25.00 25.00 81.23 75.26 2.09 8.09 150.0 150.0 85.79 81.47 9.65 7.12 21-22 Phe 50.00 50.00 96.23 85.47 2.36 7.49 200.0 200.0 100.2 109.8 3.56 7.02 23-24 Glu 50.00 50.00 92.09 89.25 3.44 5.74 250.0 250.0 94.56 81.23 7.28 9.25 25-26 Tyr 25.00 25.00 80.12 87.90 7.96 7.85 150.0 150.0 97.58 101.2 7.89 10.59 27-28 Lys 10.00 10.00 80.20 77.98 10.23 11.20 100.0 100.0 87.67 90.90 9.88 9.73 29-30 Try 25.00 25.00 84.26 78.97 8.70 9.24 150.0 150.0 91.77 89.79 10.01 4.80