Table 2.

Amounts of bioactive molecules (mg) contained in the extract (kg) obtained from grape seeds.

Components	Concentration mg/kg
Hydroxybenzoic acid
Gallic acid	35.60 ± 3.17
Flavan 3-ols
(+) Catechin	88.40 ± 2.66
(−) Epicatechin	170.47 ± 4.83
(−) Epicatechin gallate	61.24 ± 2.03
(−) Epigallocatechin gallate	nd
Procyanidin B1	52.82 ± 1.84
Procyanidin B2	41.57 ± 1.52
Others procyanidinsa	253.15 ± 6.80
Flavonols
Myricetin	5.28 ± 0.32
Quercetin	31.57 ± 1.17
Quercetin 3-glucoside	7.54 ± 0.32
Quercitrin	4.76 ± 0.15
Anthocyanins
Petunidin 3-glucosidee	0.58 ± 0.00
Peonidin 3-glucoside	1.37 ± 1.17
Malvidin 3-glucoside	8.70 ± 0.33
Delphinidin-3-acetilglucosideb	0.93 ± 0.00
Malvidin-3-acetilglucosidec	Traces
Cyanidin-3-p-coumaroilglucosided	Traces
Petunidin-3-p-coumaroilglucosidee	Traces
Peonidin-3-p-coumaroilglucosidee	Traces
Malvidin-3-p-coumaroilglucosidec	Traces

Mean values ± standard deviations are reported (n = 3).

^aExpressed as equivalent of Procyanidin B1.

^bExpressed as equivalent of Delphinidin-3-glucoside.

^cExpressed as equivalent of malvidin 3-glucoside.

^dExpressed as equivalent of cyaniding 3-glucoside.

^eExpressed as equivalent of peonidin 3-glucoside.