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Table 1 List of metabolites identified by 1H NMR and two dimensional NMR experiments.

From: Transcript and metabolite analysis in Trincadeira cultivar reveals novel information regarding the dynamics of grape ripening

Metabolite Chemical shift Multiplicity/Coupling constant
cis - Caffeoyl derivative δ 5.91 (d, J = 13.0 Hz)
  δ 6.89 (d, J = 8.5 Hz)
  δ 6.95 (d, J = 13.0 Hz)
  δ 7.56 (d, J = 8.5 Hz)
cis -Coumaroyl derivative δ 5.93 (d, J = 13.0 Hz)
  δ 6.83 (d, J = 9.5 Hz)
  δ 7.02 (d, J = 13.0 Hz)
  δ 7.58 (d, J = 9.5 Hz)
trans -caftaric acid (caffeic acid conjugated with tartaric acid) δ 7.64/δ 7.15 (d, J = 16.0 Hz)/(d, J = 2.0 Hz)
  δ 7.07 (dd, J = 8.5 Hz, 2.0 Hz)
  δ 6.88 (d, J = 8.5 Hz)
  δ 6.38 (d, J = 16.0 Hz)
  δ 5.51 (s)
Sucrose δ 5.39 (d, J = 3.9 Hz)
α-Glucose δ 5.17 (d, J = 3.5 Hz)
β-Glucose δ 4.56 (d, J = 7.5 Hz)
Tartaric acid δ 4.50 (s)
Malic acid δ 2.67 (dd, J = 16.0, 7.0)
  δ 2.82 (dd, J = 16.0, 4.5)
  δ 4.43 (dd, J = 7.0, 4.5)
Choline δ 3.22 (s)
Citric acid δ 2.93 (d, J = 16.0 Hz)
  δ 2.76 (d, J = 16.0 Hz)
Succinic acid δ 2.62 (s)
Proline δ 2.35 (m)
  δ 3.37 (m)
Glutamate δ 2.44 (td, J = 16.2, 7.5)
  δ 2.13 (m)
Acetic acid δ 1.91 (s)
Arginine δ 1.92 (m)
  δ 1.72 (m)
Alanine δ 1.48 (d, J = 7.4 Hz)
Threonine δ 1.32 (d, J = 6.5 Hz)
ethyl-β -glucoside δ 1.21 (t, J = 7)
Valine δ 1.06 (d, J = 7.0 Hz)
  δ 1.01 (d, J = 7.0 Hz)
Leucine δ 0.96 (d, J = 7.5)
  δ 0.98 (d, J = 7.5)
  Trace amounts  
γ-Aminobutyric acid (GABA) δ 1.90 (m)
  δ 2.31 (t, J = 7.5)
  δ 3.01 (t, J = 7.5)
α-Linolenic acid δ 0.95 (t, J = 7.5)
  Trace amounts  
Gallic acid δ 7.03 (s)
  Trace amounts  
Ascorbic acid δ 4.59 (d. J = 2.0 Hz)
Syringic acid δ 3.89 (s)
  δ 7.31 (s)
  Trace amounts  
Vanillic acid δ 6.77/δ 7.22 (d, J = 8.2)/(m)
Methionine δ 2.15 (s)
  δ 2.65 (t, J = 8.0)
  1. A wide range of metabolites is present which includes amino and organic acids (resonances observed in the region of δ 0.80 to 4.00) together with sugars (δ 4.00 to 5.50) and phenolic compounds (δ 5.50 to 8.50).