Table 1 Tentative annotation and chemical classification (NPClassifier) of discriminant metabolites

From: Untargeted metabolomics approaches challenge the nutri-score FOPNL system in soluble cocoa products

Feature

Ionization Mode

m/z

RT

MS/MS

Tentative annotation

NPC class

NPC super class

Level

Source

2

Negative

105.03062

0.636

-

-

-

-

-

-

3

Negative

115.01473

0.688

-

-

-

-

-

-

4

Negative

128.03958

0.833

82.03231; 85.03123; 128.03998

Pyroglutamic acid

Aminoacids

Small peptides

2

a

8

Negative

153.02864

1.91

59.01562; 81.03799; 91.021; 108.02457; 109.0325

Pyrocatechuic acid

Simple phenolic acids

Phenolic acids (C6-C1)

2

a

10

Negative

160.06572

0.849

-

-

-

-

 

-

11

Negative

172.10553

7.533

128.11041:100 130.09224:1026

N-Acetylleucine

Dipeptides

Small peptides

2

a

12

Negative

181.07983

0.561

59.01617; 71.01682; 73.03113; 89.02831; 101.02828

Sorbitol

Monosaccharides

Saccharides

2

a

13

Negative

184.14259

17.345

-

-

-

-

 

-

16

Negative

206.05513

12.532

-

-

-

-

 

-

17

Negative

206.08673

8.545

58.0324; 70.0344; 91.0582; 147.04768; 164.07834

N-Acetylphenylalanine

Dipeptides

Small peptides

2

a

18

Negative

236.10303

10.371

-

-

-

-

 

-

19

Negative

242.15135

17.706

59.01809; 170.16272; 198.16049

-

Hydroxy fatty acids

Fatty Acids and Conjugates

3

c

21

Negative

281.14551

7.726

281.27408

-

-

-

 

-

24

Negative

326.11646

12.533

119.05989; 134.07111; 162.07013; 174.06589; 206.06335; 282.13229

-

Quinazoline alkaloids

Anthranilic acid alkaloids

3

c

25

Negative

327.22275

17.635

59.01982; 171.11066; 229.1608; 327.23492

Docosahexanoic acid (DHA)

Unsaturated fatty acids

Glycerophospholipids

2

a

27

Negative

329.10403

5.215

289.0702; 217.0009

Vanillic acid glucoside

Simple phenolic acids

Phenolic acids (C6-C1)

2

b

28

Negative

329.24054

17.948

171.11349; 201.12944; 311.24292; 327.2092; 327.24509; 329.26242

-

Branched fatty acids

Fatty Acids and Conjugates

3

c

29

Negative

329.24948

17.783

139.11784; 171.10773; 211.13857; 212.13799; 229.14923; 329.23917

FA 18:1 + 3 O

Other octadecanoids

Fatty Acids and Conjugates

2

a

31

Negative

342.10999

10.369

178.06564:190

-

-

-

-

-

32

Negative

347.09302

8.862

303.10477

Camptothecin

Pyrroloquinoline alkaloids

Tryptophan alkaloids

2

a

33

Negative

353.04755

7.651

135.05455; 137.03737; 216.99713; 273.08981; 351.04889; 353.05646

-

Cinnamic acids and derivatives

Phenylpropanoids (C6-C3)

3

c

39

Negative

381.18558

8.82

-

-

-

-

-

-

40

Negative

389.14261

9.256

-

-

-

-

-

-

41

Negative

393.18698

10.913

289.0705; 249.1332

Hexenyl primeveroside

Pregnane steroids

Steroids

2

b

47

Negative

415.17206

9.701

-

-

-

-

-

-

53

Negative

447.11255

12.358

285.04602; 447.10129

Luteolin-7-O-glucoside

Flavones

Flavonoids

2

a

54

Negative

448.17255

6.385

158.09352; 158.13956; 159.09639; 289.09192

-

Dipeptides

Small peptides

3

c

57

Negative

459.14066

16.355

297.09314; 459.15735

-

-

-

-

-

79

Positive

124.0405

0.724

53.03613:872; 78.03318; 79.04059; 80.04911; 81.03123; 81.05134; 96.04283; 124.0403

Nicotinic acid (niacin)

Pyridine alkaloids

Nicotinic acid alkaloids

2

a

81

Positive

182.10719

17.171

-

-

-

-

-

-

90

Positive

266.10657

9.082

120.08096; 163.02405; 166.09131; 174.9711; 180.04413; 181.03864; 192.98123; 202.09377; 207.00471; 209.98903

-

Flavonols

Flavonoids

3

c

93

Positive

299.09897

16.449

-

-

-

-

-

-

95

Positive

308.22913

17.112

290.19455; 291.20078; 306.15887; 308.16238; 308.20502; 308.33511; 308.38879; 308.47079

-

-

-

-

-

  1. a: Annotated using the MS-DIAL spectral library, b: Annotated based on MS/MS fragmentation patterns, c: Chemical class assigned using NPClassifier via MS2Query.