Journal of Food Bioactives, ISSN 2637-8752 print, 2637-8779 online
Journal website www.isnff-jfb.com

Original Research

Volume 9, March 2020, pages 70-78


Physicochemical characteristics, phenolic profile, and antioxidant capacity of Syrah tropical wines: effects of vineyard management practices

Figure

Figure 1.
Figure 1. Principal Component Analysis (PCA) of the phenolics quantified (n = 24) by HPLC-DAD-FD in Syrah tropical wines from grapes grown under lyre and VSP training systems using the IAC-766, IAC-572, and Paulsen 1103 rootsotcks, harvested during two periods of the year in 2014 (Harvest I and II). Esp = VSP, SI = harvest I, SII = harvest II, P1103 = Paulsen 1103, Ac. = acid.

Tables

Table 1. Physicochemical characteristics, total phenolic content, total monomeric anthocyanin content, and antioxidant activity of Syrah tropical wines from grapes with different training systems and rootstocks
 
ParameterTraining systems1Rootstock2
Paulsen 1103IAC-766IAC-572Paulsen 1103IAC-766IAC-572
June, 2014 (Harvest I)December, 2014 (Harvest II)
1Results followed by the same uppercase letter in the column (training system) do not differ significantly, according to Tukey’s Test (p ≤ 0.05). 2 Results followed by the same lowercase letter in the row (rootstock) do not differ significantly, according to Tukey’s test (p ≤ 0.05). ND: Not detected; GAE: gallic acid equivalent; MGE: malvidin-3-O-glucoside equivalent; TE: trolox equivalent; Lyre: divided trellis system; VSP: vertical shoot positioning, sparlier system. IC: Intensity of color.
pHLyre3.77 Ac3.93 Aa3.85 Ab3.83 Aa3.79 Ab3.80 Aa
VSP3.79 Ab3.96 Aa3.94 Aa3.83 Aa3.70 Bb3.90 Aa
Total acidity (g L−1)Lyre5.90 Aa5.30 Ab5.55 Ab4.40 Ab4.40 Ab4.63 Aa
VSP6.55 Aa5.45 Ab5.20 Ab4.03 Ab4.10 Aa4.10 Aa
Alcohol (% v/v)Lyre10.89 Ab11.02 Aa10.79 Bc12.29 Aa12.24 Aa12.55 Aa
VSP10.5 Bb11.14 Aa11.01 Aa13.40 Aa12.11 Ab13.29 Aa
Dry extract (g L−1)Lyre26.90 Ac28.60 Bb29.50 Aa27.60 Ab30.29 Aa26.83 Ab
VSP27.30 Ac30.75 Aa29.65 Ab28.36 Aa24.70 Bb29.30 Aa
Free SO2 (mg L−1)Lyre30.55 Aa30.72 Aa30.38 Aa45.91 Ab49.66 Aa42.32 Ab
VSP26.28 Bb30.21 Aa25.77 Bb39.70 Bc50.00 Aa46.50 Ab
Total SO2 (mg L−1)Lyre108.88 Ac154.62 Aa13.00 Bb68.4 Bb77.6 Aa70.3 Bb
VSP91.39 Bc106.49 Bb153.77 Aa78.0 Aa73.5 Ab75.4 Aa
Volatile acidity (g L−1)Lyre0.62 Aa0.59 Aa0.62 Aa0.98 Aa0.99 Aa0.55 Ab
VSP0.63 Aa0.62 Aa0.48 Bb0.41 Bb0.72 Aa0.39 Bb
Reduced sugars (g L−1)Lyre3.33 Aa2.27 Ac2.64 BbND1.33 Aa1.39 Aa
VSP3.35 AaND2.79 AbNDND1.66 Aa
Total phenolics (mg GAE L−1)Lyre1,900 Ab2,290 Aa1,880 Ab2,270 Ab2,500 Aa2,040 Ab
VSP1,780 Aa1,520 Ab1,500 Bb2,180 Aa1,680 Bb2,400 Aa
Monomeric anthocyanins (mg MGE L−1)Lyre169.07 Ab183.06 Aa178.67 Ab166.99 Ab191.20 Aa185.77 Ab
VSP143.40 Bb253.61 Aa203.10 Ac162.41 Aa177.84 Aa162.41 Aa
IC (420nm+520nm+620nm)Lyre6.91 Ab6.24 Bc7.64 Aa4.33 Bc5.09 Bb9.17 Aa
VSP7.04 Ac9.75 Aa8.03 Ab6.58 Ac9.47 Aa8.83 Bb
DPPH (µmol TE mL−1)Lyre9.23 Aa8.25 Bb9.24 Aa8.33 Aa7.60 Bc7.97 Ab
VSP8.95 Aa9.23 Aa9.42 Aa7.97 Ab9.54 Aa9.26 Aa

 

Table 2. Phenolic compounds identified and quantified in Syrah wines from grapes with different rootstock and training systems
 
Phenolic compounds (mg L−1)Training system 1Rootstock2
Paulsen 1103IAC-766IAC-572Paulsen 1103IAC-766IAC-572
June, 2014 (Harvest I)December, 2014 (Harvest II)
1Results followed by the same uppercase letter in the column (training system) do not differ significantly, according to Tukey’s Test (p ≤ 0.05). 2 Results followed by the same lowercase letter in the row (rootstock) do not differ significantly, according to Tukey’s test (p ≤ 0.05). ND: Not detected; NS: not significant; Lyre: divided trellis system; VSP: vertical shoot positioning, sparlier system.
(+)-CatechinVSP16.30 Ac27.00 Aa22.70 Ab7.30 Ab9.40 Aa6.25 Bc
Lyre13.86 Ab16.73 Ab17.40 Aa6.90 Ab5.30 Bc8.20 Aa
(−)-EpicatechinVSP7.50 Ab10.33 Aa7.00 Ac3.40 Ab4.85 Ab6.25 Aa
Lyre6.00 Bc6.16 Ab6.90 Aa3.23 Bb5.30 Bc8.20 Aa
(−)-Epicatechin GallateVSP1.40 Ab2.30 Aa1.43 Ab0.90 Ac1.30 Aa1.10 Ab
Lyre1.40 Aa1.36 Ab1.43 Aa1.16 Aa1.23 Aa1.10 Aa
(−)-EpigallocatechinVSP3.83 Aa3.36 Aa2.83 Ab2.35 Ab4.80 Aa2.35 Ab
Lyre3.30 Aa2.60 Bc2.83 Ab2.73 Aa2.53 Bb2.45 Ab
Procyanidin A2VSP1.10 Ab1.40 Aa1.00 Bc0.60 Ab0.90 Aa0.80 Aa
Lyre1.00 Bb0.90 Bc1.10 Aa0.60 Aa0.50 Bb0.60 Aa
Procyanidin B1VSP13.50 Ab14.96 Aa11.13 Ac7.52 Aa6.00 Ac7.15 Bb
Lyre13.93 Aa9.13 Bc10.63 Bb7.10 Bb5.50 Bc7.30 Aa
Procyanidin B2VSP8.53 Ac14.00 Aa10.03 Ab5.55 Ab10.25 Aa7.15 Bb
Lyre6.50 Bc9.80 Aa9.03 Bb5.06 Ab3.83 Bc7.30 Aa
Ʃ Flavan-3-olsVSP52.16 Ac73.26 Aa56.13 Ab27.62 Ab37.50 Aa24.20 Bc
Lyre46.00 Bc46.70 Bb49.33 Aa26.78 Ab24.19 Ab35.15 Aa
Kaempferol-3-O-glucosideVSP0.66 Ab1.20 Aa0.56 Ab5.70 Bb6.35 Aa6.10 Ab
Lyre0.66 Aa0.46 Ab0.43 Ab6.36 Ab5.70 Bc7.15 Aa
Isorhamnetin-3-O-glucosideVSP9.06 Ab13.53 Aa8.66 Ac11.95 Bb11.70 Bc17.35 Aa
Lyre8.06 Bb8.10 Bb8.53 Aa22.83 Ab19.50 Ab26.45 Aa
RutinVSP0.90 Ac1.30 Aa1.00 Ab0.45 Bb0.50 Bb1.30 Aa
Lyre0.90 Aa0.90 Aa0.83 Ab1.40 Ab1.40 Ab1.75 Aa
QuercetinVSP0.20 NS0.20 NS0.20 NS0.30 Bc0.70 Aa0.40 Bb
Lyre0.20 NS0.20 NS0.20 NS0.60 Ab0.60 Bb0.90 Aa
MyricetinVSP0.86 Ab1.33 Aa0.96 Ab0.60 Ab1.15 Aa0.60 Bb
Lyre0.76 Ac1.10 Ab1.00 Aa1.00 Aa0.70 Bb1.25 Aa
IsoquercetinVSP13.50 Ac18.33 Aa14.0 Ab15.90 Bb9.35 Bc29.45 Aa
Lyre12.90 Aa12.80 Ab12.26 Ab30.75 Ab29.16 Ab41.25 Aa
Ʃ FlavonolsVSP25.20 Ab35.90 Aa25.40 Ab34.90 Bb29.75 Bc55.20 Aa
Lyre23.50 Ab24.00 Aa23.25 Ab62.96 Ab57. 06 Ac78.75 Aa
Trans-resveratrol (Stilbene)VSP0.20 NS0.20 NS0.20 NS0.50 NS0.50 NS0.50 NS
Lyre0.20 NS0.20 NS0.20 NS0.46 NS0.46 NS0.50 NS
Gallic acidVSP13.83 Ac20.73 Aa14.56 Ab16.85 Ab22.30 Aa12.20 Bc
Lyre13.16 Aa12.00 Bb13.03 Ab16.16 Aa10.50 Bc15.25 Ab
Caffeic acidVSP7.00 Bc20.76 Aa8.40 Bb12.20 Ab20.40 Aa10.90 Bc
Lyre15.60 Aa12.46 Bb8.96 Ac10.36 Bb9.80 Bc13.80 Aa
Chlorogenic acidVSP5.20 Aa0.93 Bc4.30 Bb0.40 NS0.40 NSND
Lyre2.30 Bc2.90 Ab5.13 Aa0.40 NS0.40 NSND
Syringic acidVSP3.63 Ab4.56 Aa2.90 Ac1.30 Ab1.50 Aa1.10 Bc
Lyre3.23 Ab3.06 Bb4.20 Aa1.20 Bb0.93 Bc1.50 Aa
Ferulic acidVSP0.30 Ab0.56 Aa0.33 Ab0.95 Ac1.20 Aa1.05 Ab
Lyre0.43 Aa0.36 Aa0.36 Aa0.96 Ab0.80 Bc1.10 Aa
Ʃ Phenolic acidsVSP29.96 Ab47.56 Aa30.50 Ab31.70 Ab45.80 Aa25.25 Bc
Lyre34.73 Aa30.80 Bb31.70 Aa29.10 Bb22.43 Bc31.65 Aa
Malvidin 3-O-glucosideVSP63.30 Ac105.13 Aa86.16 Ab55.05 Bc83.20 Aa63.95 Bb
Lyre53.53 Bc84.50 Aa73.10 Ab60.83 Ab52.90 Bc70.20 Aa
Delphinidin 3-O-glucosideVSP1.10 Ac1.80 Aa1.50 Ab1.60 Ab1.50 Ac2.95 Aa
Lyre0.90 Bc1.10 Bb1.43 Aa1.80 Bb1.10 Bc2.05 Aa
Peonidin 3-O-glucosideVSP1.90 Ac2.53 Aa2.03 Ab2.85 Bb1.90 Bc4.05 Aa
Lyre1.63 Bc1.80 Bb1.90 Aa3.20 Aa2.00 Ac3.10 Bb
Pelargonidin 3-O-glucosideVSP4.86 Ac9.03 Aa7.33 Ab6.40 Bc7.15 Ab9.65 Aa
Lyre4.20 Bc5.93 Ab6.76 Aa6.76 Ab4.93 Bc8.20 Aa
Petunidin 3-O-glucosideVSP0.50 Ab0.60 Aa0.50 Ab0.60 Aa0.55 Aa0.60 Aa
Lyre0.66 Aa0.50 Bb0.43 Ab0.60 Aa0.50 Bb0.60 Aa
Ʃ AnthocyaninsVSP71.66 Ac119.10 Aa47.53 Ab66.45 Bc94.35 Aa81.20 Bb
Lyre60.93 Bc93.83 Aa83.63 Bb73.20 Ab61.43 Ab84.15 Aa