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Table 2 Content of the main metabolites in Merlot, Cabernet Sauvignon, and Cabernet Gernischt dry red wines (g/L)

From: Quality evaluation of different varieties of dry red wine based on nuclear magnetic resonance metabolomics

Metabolites

Contents \((\bar{x} \pm SD,\;n = 4)\)

Merlot

Cabernet Sauvignon

Cabernet Gernischt

Ethyl acetate

1.706 ± 0.010a

1.519 ± 0.028b

1.744 ± 0.008a

Lactic acid

0.459 ± 0.015c

0.508 ± 0.029b

0.622 ± 0.030a

Alanine

0.016 ± 0.001c

0.037 ± 0.001b

0.065 ± 0.004a

Succinic acid

1.440 ± 0.027a

1.312 ± 0.016b

1.122 ± 0.054c

Proline

3.891 ± 0.157b

3.226 ± 0.044c

4.311 ± 0.081a

Malic acid

4.076 ± 0.240b

4.954 ± 0.166a

5.022 ± 0.0275a

Glycerol

14.776 ± 0.197a

13.989 ± 0.092b

13.245 ± 0.275c

Gallic acid

0.113 ± 0.002b

0.135 ± 0.003a

0.102 ± 0.004b

  1. All statistical analyses were performed using SPSS 17.0 software (SPSS Inc., Chicago, USA). Data are presented as the mean ± SEM. The results were analysed by one-way ANOVA followed by Tukey’s HSD post hoc test. A p-value < 0.05 was considered statistically significant