Aging time (months)

7

8

9

10

11

12

Evolution/ Times

Compounds

Gallic acid

0.522 ± 0.004

0.567 ± 0.001

0.606 ± 0.001

0.652 ± 0.007

0.691 ± 0.003

0.720 ± 0.003

3.380

Catechin

-

Vanillic acid

-

Phenol

ND

ND

ND

ND

ND

ND

-

Syringic acid

0.245 ± 0.001

0.272 ± 0.003

0.294 ± 0.001

0.315 ± 0.001

0.332 ± 0.001

0.346 ± 0.009

2.507

Vanillin

0.142 ± 0.003

0.153 ± 0.001

0.158 ± 0.001

0.174 ± 0.007

0.194 ± 0.002

0.201 ± 0.004

2.072

Syringaldehyde

0.250 ± 0.001

0.279 ± 0.002

0.301 ± 0.001

0.323 ± 0.001

0.334 ± 0.001

0.346 ± 0.012

2.932

p-Coumaric acid

0.045 ± 0.003

0.048 ± 0.009

1.066

Sinapic acid

0.157 ± 0.003

0.157 ± 0.009

0.157 ± 0.015

1.000

Coumarin

-

4-Methylumbelliferone

ND

ND

ND

ND

ND

ND

-

o-Coumaric acid

-

Sum of each phenolic compound (on each month)

1.159

1.271

1.359

1.666

1.747

1.770

-