Skip to main content

Table 2 Total polyphenol concentration in grape skin extracts

From: Carotenoids, total polyphenols and antioxidant activity of grapes (Vitis vinifera) cultivated in organic and conventional systems

Variety Colour Organic Conventional
Total polyphenols content Total polyphenols content
(mg GAE/kg sample) (mg GAE/kg sample)
Aromat de Iaşi white 220.38 ± 14.21g 228.84 ± 6.23h
Traminer roz white 219.33 ± 4.02g 330.37 ± 2.36g
Riesling italian white 423.43 ± 10.36e 436.12 ± 11.02e
Feteasca regală white 579.94 ± 11.12d 575.71 ± 9.06c
Muscat Ottonel white 631.38 ± 21.0c 541.27 ± 32.3d
Timpuriu de Cluj white 331.34 ± 3.52f 380.62 ± 23.5f
Napoca blue-black 1341.37 ± 21.1a 1231.38 ± 21.0a
Chasselas doré white 163.26 ± 3.66h 148.47 ± 1.69i
Muscat Hamburg blue-black 978.08 ± 12.8b 953.04 ± 10.9b
LSD 0.05   12.93 19.43
  1. Values are mean ± SD, n = 3; in each column, mean values with different letters are significantly different at P < 0.05.