Table 6.

Concentration of ellagitannins, gallic acid and ellagic acid in chestnut bark extracts obtained by different methods.

Compounds	Concentration in Extract g/100 g of Extract (Chiarini et al. [7])	Concentration in Extract (TAN 1) g/100 g of Extract (Comandini et al. [9])	Concentration in Extract g/100 g of Extract (Present Work at Conditions of 150 °C, 35 min and 30 mL/g)
Vescalagin	2.31	4.08	0.91
Castalagin	2.26	3.80	1.56
1-o-galloyl-castalagin	/	3.20	0.13
Gallic acid	1.25	2.80	1.03
Ellagic acid	1.70	0.93	4.19