. 2021 Jun 22;59(5):1715–1726. doi: 10.1007/s13197-021-05182-6

Table 2.

The effect of different treatments applied in the vineyard on individual phenolic compounds of Feteasca Neagra wines obtained in two vintages representative for the period 2010–2019

Compound (mg L⁻¹)	Vintage 2013				Vintage 2014				ANOVA
Compound (mg L⁻¹)	Org C	Org CT	Conv C	Conv CT	Org C	Org CT	Conv C	Conv CT	Year (Y)	Treatment (T)	Yx T
Gallic acid	10.02 ± 2.30^a	10.94 ± 2.50^a	7.87 ± 1.70^a	7.92 ± 1.20^a	21.97 ± 2.80^c	23.42 ± 2.40^c	29.72 ± 3.20^b	35.15 ± 2.60^a	****	ns	****
Syringic acid	1.19 ± 0.23^a	1.15 ± 0.25^a	1.05 ± 0.27^a	1.05 ± 0.22^a	3.38 ± 0.8^a	3.19 ± 0.60^a	3.62 ± 0.90^a	2.97 ± 0.201^a	****	ns	****
p-coumaric acid	2.90 ± 0.70^a	3.09 ± 0.90^a	3.56 ± 0.74^a	3.66 ± 0.60^a	1.79 ± 0.30^b	2.43 ± 0.51^b	3.40 ± 0.30^a	3.96 ± 0.60^a	ns	**	**
Catechin	7.43 ± 1.20^a	8.23 ± 1.30^a	9.63 ± 1.50^a	10.17 ± 1.70^a	17.63 ± 2.10^b	19.47 ± 2.80^b	16.54 ± 3.20^b	24.47 ± 2.30^a	****	ns	****
Epicatechin	8.73 ± 1.60^b	14.43 ± 2.1^a	5.27 ± 1.80^c	12.63 ± 2.20^a	6.59 ± 1.20^c	17.10 ± 2.70^a	7.52 ± 1.80^c	12.50 ± 2.40^b	ns	****	****
Rutin	1.68 ± 0.06^b	2.06 ± 0.08^a	0.12 ± 0.05^b	0.24 ± 0.09b	0.33 ± 0.03^d	0.77 ± 0.05^a	0.49 ± 0.02^c	0.68 ± 0.05^b	ns	**	****
Quercetin	0.13 ± 0.05^ab	0.23 ± 0.19^a	0.05 ± 0.02^b	0.06 ± 0.04^b	0.28 ± 0.06^a	0.32 ± 0.05^a	0.16 ± 0.07^b	0.38 ± 0.03^a	***	*	****
t-resveratrol	0.88 ± 0.03^b	1.06 ± 0.09^a	0.75 ± 0.05^b	1.08 ± 0.10^a	1.74 ± 0.09^b	2.14 ± 0.10^a	1.31 ± 0.07^c	1.40 ± 0.06^c	****	ns	****
De	0.67 ± 0.22^b	1.71 ± 0.63^a	0.50 ± 0.32^b	0.69 ± 0.37^b	1.75 ± 0.27^b	2.48 ± 0.33^a	1.00 ± 0.18^c	1.80 ± 0.36^b	**	**	****
Cy	0.25 ± 0.11^b	0.59 ± 0.26^a	0.38 ± 0.10^ab	0.40 ± 0.13^ab	0.27 ± 0.10^a	0.29 ± 0.04^a	0.31 ± 0.09^a	0.37 ± 0.11^a	ns	ns	ns
Pt	0.92 ± 0.55^a	1.71 ± 0.38^a	1.00 ± 0.30^a	1.16 ± 0.52^a	4.26 ± 1.172^ab	5.93 ± 1.20^a	2.16 ± 1.06^b	3.90 ± 1.18^ab	****	ns	****
Pe	0.26 ± 0.11^a	0.39 ± 0.22^a	0.39 ± 0.22^a	0.43 ± 0.15^a	3.38 ± 0.52^b	4.64 ± 0.66^a	2.36 ± 0.30^b	5.19 ± 0.76^a	****	ns	****
Mv	18.91 ± 4.30^a	20.73 ± 2.60^a	16.08 ± 2.90^a	18.94 ± 3.20^a	32.75 ± 6.30^ab	43.29 ± 7.50^a	20.57 ± 6.20^a	31.56 ± 5.80^ab	****	**	****
Pea	0.35 ± 0.10^b	0.35 ± 0.18^b	0.82 ± 0.26^a	0.74 ± 0.29^ab	0.51 ± 0.21^a	0.60 ± 0.16^a	0.51 ± 0.20^a	0.48 ± 0.18^a	ns	ns	ns
Mva	5.65 ± 1.62^a	6.96 ± 1.35^a	0.77 ± 0.28^b	0.84 ± 0.33^b	1.34 ± 0.30^ab	1.78 ± 0.35^a	1.04 ± 0.27^b	1.25 ± 0.38^ab	*	ns	****
Pec	0.34 ± 0.20^a	0.37 ± 0.199^a	0.30 ± 0.18^a	0.33 ± 0.10^a	0.86 ± 0.21^ab	1.16 ± 0.32^a	0.54 ± 0.16^b	0.83 ± 0.20^ab	****	ns	****
Mvc	2.40 ± 0.30^a	1.47 ± 0.10^b	1.15 ± 0.10^b	1.31 ± 0.16^b	1.88 ± 0.33^b	2.53 ± 0.38^a	1.14 ± 0.27^c	1.66 ± 0.29^bc	ns	***	****

Org–organic system, Conv–conventional system, CT–30% cluster thinning, C–control; Means (n = 3) ± standard deviation followed by different lowercase letters in the line differ significantly according to the Duncan’s multiple range test for year (Y), treatment (T) and both, year and treatment (Y × T): ns: p > 0.05 (not significant), *p ≤ 0.05 (significant), **p ≤ 0.01 (highly significant), ***p ≤ 0.001 (very highly significant) and ****p ≤ 0.0001 (extremely significant)