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Table 1 The carotenoids concentration (μg/kg ) in grape skin extract

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

Variety Color Organic Conventional
ß-carotene Lutein ß-carotene Lutein
(μg/kg sample) (μg/kg sample) (μg/kg sample) (μg/kg sample)
Aromat de Iaşi white 304.0 ± 49de 512.0 ± 69g 232.0 ± 46e 470.9 ± 46e
Traminer roz white 331.9 ± 23c 551.0 ± 35f 356.8 ± 34bc 598.0 ± 53d
Riesling italian white 365.2 ± 34b 632.0 ± 56e 264.5 ± 47d 709.0 ± 87b
Feteasca regală white 328.3 ± 31cd 855.0 ± 66a 344.3 ± 32bc 825.0 ± 39a
Muscat Ottonel white 504.9 ± 43a 723.0 ± 56c 593.2 ± 35a 602.0 ± 87cd
Timpuriu de Cluj white 290.4 ± 14ef 799.0 ± 23b 334.1 ± 12c 803.0 ± 52a
Napoca blue-black 369.0 ± 26b 701.0 ± 34cd 229.6 ± 18e 689.0 ± 19b
Chasselas doré white 273.5 ± 23f 552.0 ± 56f 363.6 ± 45b 589.0 ± 21d
Muscat Hamburg blue-black 302.1 ± 56e 685.0 ± 67d 265.0 ±32d 662.0 ± 12bc
LSD 0.05   25.77 31.27 22.86 51.57
  1. Values are mean ± SD, n = 3; in each column, mean values with different letters are significantly different at P < 0.05.