Table 5 Metabolomic analysis of CFCS of Lactobacillus strains Lp03, Lp289 and Lp291

4.164

Carbodiimide

–

1.69

1.70

–

4.700

N.N-Dimethylglycine

0.04

–

0.15

0.09

7.295

Lactic acid

0.85

68.16

56.35

67.34

7.524

Acetic acid

–

–

0.07

6.52

7.768

Valine

0.05

–

0.04

1.02

7.936

2-Propenoic acid

–

–

0.05

0.11

8.405

Alanine

1.14

1.74

2.38

–

9.020

Glycine

0.33

0.76

1.11

–

9.873

β- Lactate

–

–

0.08

–

10.168

Leucine

0.17

0.16

0.07

1.29

10.445

3-Hydroxybutyric acid

–

–

0.04

0.26

10.638

α-Hydroxyvaleric acid

–

0.12

0.16

–

10.909

Isoleucine

–

–

–

0.79

12.465

Valine

1.02

1.69

2.41

0.15

13.203

4-methyl-2-hydroxypentanoic acid

–

0.41

0.52

0.58

13.395

3-methyl-2-hydroxypentanoic acid

–

0.12

0.08

0.06

14.510

Leucine

2.48

2.65

3.79

–

14.733

Glycerol

–

0.95

–

–

14.769

Phosphoric acid

7.29

7.18

8.32

7.92

15.236

Isoleucine

1.18

1.59

2.44

0.44

15.308

γ- Amino butyric acid

–

–

0.03

–

15.839

Butanoic acid

0.20

0.43

0.57

0.41

16.220

2-methyl-2.3-dihydroxypropanoic acid

0.10

0.16

0.20

0.28

16.705

Pyrimidine

–

–

0.05

–

17.644

Serine

0.75

0.25

0.64

0.61

18.148

Butanoic acid

0.02

0.43

0.09

0.08

18.272

3-Methyl-1.4-dihydroxypiperazine-2.5-dione

–

–

0.02

–

18.496

Butyric acid

–

0.49

1.53

–

18.531

Threonine

0.62

–

–

–

18.555

Lactic acid dimer

–

0.33

0.26

0.77

19.332

2.4-dihydroxybutanoic acid

–

–

0.08

0.08

21.091

Trisiloxane

–

0.13

0.12

0.09

21.769

Malic acid

–

–

0.07

0.09

21.865

2-Pyrrolidone-5-carboxylic acid

–

0.33

0.41

0.41

22.262

Glutamic acid

–

–

0.05

–

22.458

Methionine

0.22

–

–

–

22.588

Proline

1.40

0.89

2.90

0.35

22.708

Aspartic acid

0.56

–

0.55

–

23.099

Phenylalanine

–

0.79

–

0.44

24.376

Benzenepropanoic acid

–

0.36

0.53

0.12

25.583

Glutamine

1.76

–

2.79

–

26.434

Tartaric acid

0.34

0.35

0.51

–

26.995

Hydroxy 4-oxo-2.4-di(hydroxyamino)butanoate

–

–

–

0.20

27.048

Asparagine

0.04

–

–

–

27.895

Lysine

–

–

0.63

–

28.638

Arabinitol

–

–

0.23

–

28.805

Ribitol

–

0.17

–

–

29.803

2.3-dihydroxypropylphosphoric acid

0.13

–

0.24

–

29.920

D-Ribo-Hexonic acid

–

–

0.09

–

30.946

2-Keto-D-gluconic acid

0.70

–

0.10

–

31.133

1.2.3-Propanetricarboxylic acid

–

4.27

4.33

3.34

31.259

Citric acid

7.49

–

–

–

32.345

Pentanedioic acid

–

0.23

0.42

0.10

32.451

Benzenepropanoic acid

0.10

–

–

–

32.879

4-Hydroxyphenyllactic acid

0.12

–

–

33.891

Tyrosine

0.13

–

0.05

–

33.955

Glucitol

0.04

–

–

0.18

35.660

Inositol

31.07

–

–

–

39.845

Tryptophan

0.06

–

0.07

–

44.979

Uridine

–

–

–

0.09

–

Identified compounds (except sugars)

60.28

96.94

97.32

94.34

–

Sugars

38.12

1.14

2.31

5.28

–

Unidentified compounds

1.60

1.92

0.37

0.38

–

Total

100.00

100.00

100.00

100.00