Aging time (months)

0

1

2

3

4

5

6

Compounds

Gallic acid

ND

0.213 ± 0.001

0.269 ± 0.003

0.317 ± 0.003

0.367 ± 0.004

0.417 ± 0.001

0.477 ± 0.003

Catechin

ND

Vanillic acid

ND

Phenol

ND

ND

ND

ND

ND

ND

ND

Syringic acid

ND

0.138 ± 0.001

0.169 ± 0.001

0.190 ± 0.001

0.221 ± 0.001

Vanillin

ND

0.097 ± 0.001

0.113 ± 0.001

0.119 ± 0.006

0.134 ± 0.002

Syringaldehyde

ND

0.118 ± 0.002

0.135 ± 0.002

0.177 ± 0.005

0.210 ± 0.006

0.231 ± 0.004

p-Coumaric acid

ND

Sinapic acid

ND

Coumarin

ND

4-Methylumbelliferone

ND

ND

ND

ND

ND

ND

ND

o-Coumaric acid

ND

Sum of each phenolic compound (on each month)

ND

0.331

0.404

0.552

0.826

0.936

1.063