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Table 3 Contents of four compounds of valonia and shell extracts from Q. variabilis

From: Chemical composition, antibacterial activity and related mechanism of valonia and shell from Quercus variabilis Blume (Fagaceae) against Salmonella paratyphi a and Staphylococcus aureus

Organ

Extracts

Compound (mg/g)

Ellagic acid

Tannic acid

Theophyline

Caffeic acid

Valonia

VEE

18.95 ± 0.20

2.21 ± 0.33

9.58 ± 0.27

2.64 ± 0.14

VPEF

2.17 ± 0.04

0.14 ± 0.02

1.39 ± 0.03

0.05 ± 0.02

VEAF

74.57 ± 3.02

13.41 ± 0.47

20.17 ± 0.003

1.74 ± 0.002

VBF

3.08 ± 0.07

6.41 ± 0.76

66.23 ± 2.21

5.63 ± 0.57

VWF

8.68 ± 0.25

2.72 ± 0.20

5.18 ± 0.33

3.23 ± 0.11

Shell

SEE

0.90 ± 0.11

1.09 ± 0.05

0.15 ± 0.005

0.36 ± 0.005

SPEF

–

–

–

–

SEAF

22.66 ± 0.23

16.96 ± 1.87

0.28 ± 0.002

0.33 ± 0.05

SBF

1.02 ± 0.09

–

–

–

SWF

0.55 ± 0.08

3.37 ± 0.06

1.36 ± 0.16

–

  1. Each value represented in tables are means ± SD (n = 3).