Table 1 List of the 19 discriminating peaks found by statistical analysis and detection limit of each peak. All P-values < 0.0001

1

1.37 ± 0.14

6.80 ± 0.54

10³

2

13.91 ± 0.37

2.39 ± 0.87

–

3

8.94 ± 0.26

3.19 ± 0.85

–

4

3.08 ± 0.11

12.06 ± 1.18

10⁶

5

14.63 ± 0.65

4.87 ± 1.85

–

6

0.56 ± 0.08

8.20 ± 1.29

10⁶

7

2.23 ± 0.14

6.51 ± 0.87

10⁶

8

2.76 ± 0.17

6.49 ± 0.80

10⁶

9

3.70 ± 0.23

7.22 ± 0.80

10⁶

10

0.88 ± 0.10

9.94 ± 2.13

10⁵

11

5.23 ± 0.23

11.85 ± 1.96

–

12

0.96 ± 0.10

8.61 ± 2.28

10⁵

13

1.95 ± 0.11

5.87 ± 1.27

10⁶

14

0.68 ± 0.05

9.10 ± 2.81

10⁶

15

2.94 ± 0.29

5.11 + 0.60

10⁶

16

0.76 ± 0.06

7.37 + 2.46

10⁶

17

1.12 ± 0.02

14.26 ± 5.92

10⁵

18

0.95 ± 0.11

9.57 ± 4.46

10⁶

19

2.27 ± 0.13

6.07 ± 2.04

10⁶