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Table 1 Identification of chemical constituents in water (121 °C, 15 psi), water (room temperature) and methanol extract of P. tenellus leaves

From: Pressurized hot water extraction of hydrosable tannins from Phyllanthus tenellus Roxb.

No

Compound identity

m/z

Compound classification

Average relative quantification (%)

PHWE

Water (room temperature)

Methanol extract

1

Quinic acid

191

Phenolic acid

0.147 ± 0.050b

0.197 ± 0.030b

0.068 ± 0.009a

2

Caffeoylmalic acid

295

Phenolic acid

0.029 ± 0.008a

0.017 ± 0.015a

0.361 ± 0.050b

3

Caffeic acid 3-glucoside

341

Phenolic acid

0.055 ± 0.040b

0.181 ± 0.001c

0.007 ± 0.004a

4

1-O-(2-acetpxybenzoyl)-β-d-glucopyranuronic acid

355

Phenolic acid

0.039 ± 0.013a

0.060 ± 0.055a

0.030 ± 0.001a

5

o-coumaroylquinic acid

337

Phenolic acid

0.015 ± 0.002c

0.007 ± 0.001b

NDa

6

Coumaric acid

163

Phenolic acid

0.025 ± 0.002b

NDa

NDa

7

β-glucogallin

331

Phenolic acid

0.149 ± 0.046c

NDa

0.019 ± 0.007b

8

Caffeic acid

179

Phenolic acid

0.024 ± 0.011c

NDa

0.004 ± 0.004b

9

2-O-caffeoyl glucarate

371

Phenolic acid

0.063 ± 0.012b

NDa

NDa

10

2,4-Dihydroxy-6-(3-methylbutoxy)-3-(3-methylbutyl) benzaldehyde

293

Phenolic acid

0.007 ± 0.001b

NDa

NDa

11

Chlorogenic acid derivatives

467

Phenolic acid

0.047 ± 0.015b

NDa

NDa

12

Coumaroylquinic acid

337

Phenolic acid

NDa

0.017 ± 0.006b

0.024 ± 0.001b

13

Chlorogenic acid

353

Phenolic acid

NDa

0.026 ± 0.074b

0.203 ± 0.057c

14

2,5-dihyroxycinnamic acid

179

Phenolic acid

NDa

0.007 ± 0.002b

0.005 ± 0.001b

15

1-O-(3,4,5-Trihydroxybenzoyl)hexopyranose

331

Phenolic acid

NDa

0.005 ± 0.009b

0.229 ± 0.017c

16

4-O-beta-d-glucosyl-4-coumaric acid

325

Phenolic acid

NDa

0.007 ± 0.007b

NDa

17

Rutin

609

Flavonoid

0.039 ± 0.034b

NDa

0.020 ± 0.014b

18

Quercetin glucoside

463

Flavonoid

0.017 ± 0.004b

NDa

0.254 ± 0.004c

19

Myricetin-rhamnoside

463

Flavonoid

0.150 ± 0.005b

NDa

NDa

20

Quercetin glucoside derivative

649

Flavonoid

NDa

0.006 ± 0.010b

0.110 ± 0.008c

21

Cyanidin malonylglucoside

535

Flavonoid

NDa

NDa

0.013 ± 0.010b

22

Cyanidin glucoside

447

Flavonoid

NDa

NDa

0.005 ± 0.001b

23

Kaempferol hexoside

447

Flavonoid

NDa

NDa

0.061 ± 0.004b

24

6-Metoxykaempferol-3-O-hexose-O-pentose

577

Flavonoid

0.046 ± 0.055b

NDa

NDa

25

Apigenin pentose

401

Flavonoid

NDa

NDa

0.011 ± 0.009b

26

Apigenin

269

Flavonoid

NDa

NDa

0.002 ± 0.000b

27

Naringin

579

Flavonoid

NDa

NDa

0.039 ± 0.006b

28

Catechin

289

Flavonoid

0.004 ± 0.000b

NDa

0.018 ± 0.003c

29

Catechin derivatives

279

Flavonoid

NDa

0.003 ± 0.005

0.013 ± 0.004

30

Pelargonidin glucoside

431

Anthocyanin

NDa

NDa

0.002 ± 0.001b

31

Gallic acid

169

Catabolites/metabolites of hydrosable tannin

NDa

0.016 ± 0.016b

0.030 ± 0.003b

32

Gallic acid derivative

521

Catabolites/metabolites of hydrosable tannin

0.034 ± 0.007b

NDa

NDa

33

Gallic acid derivative

537/

Catabolites/metabolites of hydrosable tannin

NDa

0.040 ± 0.011b

0.761 ± 0.045c

34

Ellagic acid

301

Catabolites/metabolites of hydrosable tannin

NDa

0.008 ± 0.014b

0.124 ± 0.086c

35

Ellagic acid glucoside

463

Catabolites/metabolites of hydrosable tannin

0.021 ± 0.009b

NDa

0.035 ± 0.032b

36

Ellagic acid methyl pentoside

447

Catabolites/metabolites of hydrosable tannin

NDa

NDa

0.025 ± 0.001b

37

Methyl ellagic acid hexose

477

Catabolites/metabolites of hydrosable tannin

NDa

NDa

0.185 ± 0.156b

38

Brevifolin

247

Catabolites/metabolites of hydrosable tannin

0.013 ± 0.003b

NDa

0.010 ± 0.006b

39

Brevifolin carboxylic acid

291

Catabolites/metabolites of hydrosable tannin

0.125 ± 0.021c

NDa

0.011 ± 0.001b

40

Brevifolin conjugate

 

Catabolites/metabolites of hydrosable tannin

0.384 ± 0.029b

NDa

NDa

41

m/z 226

226

Catabolites/metabolites of hydrosable tannin

2.117 ± 3.667b

NDa

NDa

42

m/z 227

227

Catabolites/metabolites of hydrosable tannin

4.679 ± 0.546b

NDa

NDa

43

Geraniin

951

Hydrosable tannin

NDa

NDa

2.380 ± 0.035b

44

Ellagitannin

969

Hydrosable tannin

0.054 ± 0.013b

NDa

NDa

45

Dehydrohexahydroxy diphenic acid

353

Hydrosable tannin

0.067 ± 0.027b

NDa

NDa

46

HHDP-galloyl-glucose

633

Hydrosable tannin

0.407 ± 0.407b

NDa

NDa

47

HHDP glucose

783

Hydrosable tannin

NDa

NDa

0.008 ± 0.002b

48

Corilagin

633

Hydrosable tannin

NDa

NDa

0.555 ± 0.042b

49

Strictinin

633

Hydrosable tannin

NDa

NDa

0.305 ± 0.147b

50

Castalin

631

Hydrosable tannin

NDa

NDa

0.186 ± 0.261b

51

Castalagin

933

Hydrosable tannin

NDa

NDa

0.458 ± 0.050b

52

Proanthocyanidin C1

866

Condensed tannin

NDa

NDa

0.005 ± 0.000b

53

Proanthocyanidin trimer

885

Condensed tannin

NDa

NDa

0.002 ± 0.002b

  1. Triplicates of results were analyzed by one-way ANOVA with Tukey post hoc and presented as SEM. Different letters indicate significant differences between extract (p < 0.05)
  2. ND None detected