Table 3.

Volatile aldehydes in red wines (ppm)

Varieties	Acetaldehyde	Benzaldehyde	Butanol, 3-methyl-	Furfural	Nonanal
Cinsaut	0.92b	0.08d	0.06b	2.77c	0.04
Grenache	1.28a	0.33a	0.03ef	13.10a	0.41
Cabernet Franc	0.16f	0.02g	0.17a	0.24ef	0.01
Petit Verdot	0.76c	0.18c	0.04 d	6.07b	0.22
Cabernet Sauvignon	0.15f	0.04f	0.03cd	0.30ef	0.00
Nielluccio	0.20e	0.29b	0.07b	6.04b	0.23
Tempranillo	0.24d	0.06e	0.05c	0.40e	0.04
Syrah	0.22de	0.06e	0.03de	1.86d	0.03
Merlot	0.16f	0.05e	0.03de	0.29ef	0.02
Caladoc	0.14f	0.02f	0.02f	0.12f	0.00
LSD 5%	0.028	0.0108	0.0067	0.215	0.0152

Same character denotes no significance difference. However, the different characters (e.g. a, b, c) show significant differences