Table 2.
Total polyphenol content of stems of white and red grape varieties (mg GAE/100g DM).
| Grape Variety | Vintage | Total Polyphenol Concentration |
|---|---|---|
| White Grape Varieties | ||
| Aidani [29] | 2009 | 1072.6 |
| Aidani [29] | 2010 | 722 |
| Asyrtiko [29] | 2009 | 1248 |
| Asyrtiko [29] | 2010 | 1114.6 |
| Athiri [29] | 2009 | 399.9 |
| Athiri [29] | 2010 | 480.8 |
| Chardonnay [31] | 2009 | 4764 |
| Chasselas [39] | 2015 | 300 to 4300 c |
| Fernao Pires [44] | 2017 | 11,015 |
| French Colombard [32] | 1987 | 2430 a |
| French Colombard [32] | 1988 | 1980 a |
| Macabeu [31] | 2009 | 7809 |
| Malvasia Fina [44] | 2017 | 12,309 |
| Moscatel (Sanfins du Douro) [33] | 2017 | 3235 |
| Moscatel (Sanfins du Douro) [33] | 2018 | 8305 |
| Moscatel (Penajóia) [33] | 2017 | 7802 |
| Moscatel (Penajóia) [33] | 2018 | 10,349 |
| Moscatel (Medrões) [33] | 2017 | 3793 |
| Moscatel (Medrões) [33] | 2018 | 8832 |
| Moscatel [44] | 2017 | 10,871 |
| Parellada [31] | 2009 | 8924 |
| Premsal blanc [31] | 2009 | 9002 |
| Premsal blanc [21] | - | 8730 |
| Premsal blanc [45] | - | 17,200 to 22,900 d |
| Rabigato [44] | 2017 | 9471 |
| Roditis [35] | - | 3120 to 7468 d |
| Semillon [32] | 1987 | 1950 a |
| Semillon [32] | 1988 | 1690 a |
| Viosinho [44] | 2017 | 9699 |
| Red Grape Varieties | ||
| Cabernet [39] | 2015 | 1200 to 2000 c |
| Cabernet Sauvignon [31] | 2009 | 7076 |
| Cabernet Sauvignon [28] | 2000 | 2500 b |
| Cabernet Sauvignon [34] | 2009 | 348.0 |
| Callet [31] | 2009 | 11,525 |
| Carnelian [32] | 1987 | 2170 a |
| Carnelian [32] | 1988 | 1850 a |
| Frappato [34] | 2009 | 998.5 |
| Mandilaria [29] | 2009 | 1057 |
| Mandilaria [29] | 2010 | 1434.3 |
| Manto Negro [31] | 2009 | 8470 |
| Manto Negro [23] | - | 11,600 |
| Manto Negro [45] | - | 29,400 to 38,400 d |
| Mavrotragano [29] | 2009 | 1011.1 |
| Mavrotragano [29] | 2010 | 557.9 |
| Mazuelo [38] | 2016 | 1276 to 5104 b,d |
| Merlot [31] | 2009 | 4704 |
| Merlot [39] | 2015 | 900 to 2900 c |
| Nerello Mascalese (Lingualossa) [34] | 2009 | 2179.8 |
| Nerello Mascalese (Milo) [34] | 2009 | 4000.1 |
| Nerello Mascalese (Santa Venerina) [34] | 2009 | 1241.7 |
| Nero d’Avola [34] | 2009 | 2632.9 |
| Ruby Cabernet [32] | 1987 | 1950 a |
| Ruby Cabernet [32] | 1988 | 1730 a |
| Sousao [46] | - | 3135 a |
| Syrah [31] | 2009 | 9642 |
| Syrah [28] | 2000 | 2500 to 5000 b,e |
| Syrah [39] | 2015 | 200 to 2250 c |
| Tempranillo [42] | - | 4679 |
| Tempranillo [31] | 2009 | 7622 |
| Tempranillo [28] | 2000 | 1250 to 3750 b,e |
| Voidomato [29] | 2009 | 840.2 |
| Voidomato [29] | 2010 | 610 |
a Unit mg GAE/100 g FM. b Unit mg GAE/L/100 g DM. c According to the size of the stem parts during extraction. d According to the extraction method. e According to the irrigation of the vine.