Research Article

Polyphenolic Compounds, Antioxidant, and Cardioprotective Effects of Pomace Extracts from Fetească Neagră Cultivar

Table 1

Phytochemical analysis of grape pomace from cv. Fetească neagră 2015.

GPTPI
(mg catechin equivalent/g d.w.)
TC
(mg epicatechin/g d.w.)
TAC
(malvidin-3-O-glucoside mg/g d.w.)

FNFs114.71 ± 15.8663.15 ± 7.12184.84 ± 17.13
FNFr161.58 ± 3.42113.98 ± 4.3947.67 ± 5.0

Proanthocyanidins
(mg/g d.w.)
mDPPD%G%

FNFs25.57 ± 3.826.29 ± 0.16n.s.8.18 ± 0.4919.93 ± 0.41
FNFr28.71 ± 9.785.64 ± 1.333.91 ± 1.1221.69 ± 1.50n.s.

∑ flavan-3-ol monomers
(mg/g d.w.)
(+)-catechin
(mg/g d.w.)
(−)-epicatechin
(mg/g d.w.)
epicatechin-3-O-gallate
(mg/g d.w.)

FNFs2.05 ± 0.211.12 ± 0.100.87 ± 0.090.06 ± 0.01
FNFr4.71 ± 0.172.59 ± 0.012.05 ± 0.160.07 ± 0.00n.s.

Transresveratrol
(μg/g d.w.)
cis-resveratrol (μg/g d.w.)Transpiceid
(μg/g d.w.)
cis-Piceid
(μg/g d.w.)

FNFs3.22 ± 1.915.03 ± 1.0953.54 ± 10.5333.04 ± 8.14
FNFr0.58 ± 1.0112.27 ± 3.0714.31 ± 2.257.67 ± 1.99

Values are expressed as average ± standard deviation () , , , and . GP: grape pomace; Fs: fresh; Fr: fermented; FN: Fetească neagră; TPI: total phenolic index; TC: tannins concentration; TAC: total anthocyanin content; mDP: mean degree of polymerization; PD: prodelphinidins; G%: galloylation.