Table 2 Summary of compounds separated and identified in Cameroonian propolis by UHPLC-ESI-HRMS analysis in the negative ion mode. Rt, [M-H]⁻, [2 M-H]⁻, EC and RDBeq information are given together with main fragments at MS/MS level

1

2.30

311.0768

C₁₄H₁₅O₈

0.3

7.5

137.0236

93.0335

caffeic acid 4-O-pentoside

[33]

2

2.38

311.0768

C₁₄H₁₅O₈

0.6

7.5

137.0236

93.0346

caffeic acid 4-O-pentosside

[33]

3

2.60

341.0868

C₁₅H₁₇O₉

1.5

7.5

167.0317

Caffeic acid 4-O-glucoside

[33]

4

2.80

353.0878

C₁₆H₁₇O₉

1.4

8.5

191.0558

173.0451

caffeoylquinic acid

[34]

5

3.71

163.0386

C₉H₇O₃

−5.5

6.5

Coumaric acid

[14]

6

6.21

207.0656

C₁₁H₁₁O₄

−0.5

6.5

3.4-Dimethyl caffeic acid (DMCA)

[33]

7

6.26

165.0543

C₉H₉O₃

−5.5

5.5

Phloretic acid

[34]

8

10.332

477.3204

C₂₈H₄₅O₆

−2.5

6.5

431.3155

415.2839

Terpenoid derivative

9

12.36

503.3375

C₃₀H₄₇O₆

0.4

7.5

487.3423

441.3373

Triterpenoid

10

12.42

487.3424

C₃₀H₄₇O₅

0.2

7.5

Triterpenoid

11

13.503

473.3275

C₂₉H₄₅O₅

1.7

7.5

411.3252

325.1831

Triterpenoid

12

13.7

469.3315

C₃₀H₄₅O₄

−0.6

8.5

415.3215

325.1845

Triterpenoid

13

13.82

487.3419

C₃₀H₄₇O₅

−0.8

7.5

425.3147

Triterpenoid

14

14.399

485.3278

C₃₀H₄₅O₅

2.3

8.5

471.3471

441.3362

Triterpenoid

15

14.57

487.3427

C₃₀H₄₇O₅

0.8

7.5

459.347

Triterpenoid

16

15.01

485.3278

C₃₀H₄₅O₅

0

8.5

433.3362

325.1843

Triterpenoid

17

15.07

471.3468

C₃₀H₄₇O₄

0.5

7.5

453.3362

427.357

Maslinic or corosolic or cycloanostoic acid derivatives

[13, 38]

18

15.374

469.3315

C₃₀H₄₅O₄

−0.6

8.5

425.3418

Triterpenoid

19

15.857

299.2596

C₁₈H₃₅O₃

0.3

1.5

3-hydroxystearic acid

20

16.2

431.3159

C₂₇H₄₃O₄

−0.5

6.5

369.3164

Terpenoid derivative

21

16.40

455.3513

911.7104

C₃₀H₄₇O₃ C₆₀H₉₅O₆

−2.4 -2.7

7.5

13.5

Mangiferolic or isomangiferolic acids

22

16.42

501.3576

C₃₁H₄₉O₅

−0.8

7.5

Triterpenoid

23

16.46

469.3313

939.6696

C₃₀H₄₅O₄ C₆₀H₉₁O₈

−1.1

−2.7

8.5

13.5

Ambolic acid

24

16.63

453.3368

907.6818

C₃₀H₄₅O₃ C₆₀H₉₁O₆

−0.2

−0.2

8.5

15.5

Mangiferonic acid

25

16.91

471.347

943.7007

C₃₀H₄₇O₄ C₆₀H₉₅O₈

−0.8

−2.1

7.5

13.5

409.3465

Maslinic or corosolic or cycloanostoic acid derivatives

[13, 38]

26

17.17

471.3467

C₃₀H₄₇O₄

−0.4

7.5

455.3512

393.3148

Maslinic or corosolic or cycloanostoic acid derivatives

[13, 38]

27

17.38

471.3467

C₃₀H₄₇O₄

−0.8

7.5

409.347

393.3148

Maslinic or corosolic or cycloanostoic acid derivatives

[13, 38]

28

17.96

455.3525

C₃₀H₄₇O₃

−2

7.5

Mangiferolic or isomangiferolic acids

29

18.02

457.3676

915.7413

C₃₀H₄₉O₃ C₆₀H₉₉O₆

−1.3

−2.1

6.5

11.5

457.3644

Ocotillone isomer

[38]