Wastes (W) Solvents (S) Mean
EtOH : HCl 50% EtOH 80% EtOH Me2CO
Red romy Skin 0.71 ±0.00 0.31 ±0.00 0.30 ±0.00 0.29 ±0.01 0.40d
Red romy seed 1.79 ±0.01b 0.65 ±0.00 0.66 ±0.00 0.57 ±0.00 0.92c
Crimson Skin 0.66 ±0.00 0.39 ±0.00 0.37 ±0.00 0.32 ±0.00 0.43d
Thompson seedless skin 1.01 ±0.01 0.93 ±0.00 2.13 ± 0.02a 1.54  ±0.01c 1.41a
Grenache noir  skin 1.42 ±0.02 0.69 ±0.00 0.94 ±0.01 1.02 ±0.01 1.02b
Grenache noir seeds 1.34 ±0.01 0.64 ±0.00 0.74 ±0.01 0.58 ±0.00 0.83c
Mean 1.16a 0.60d 0.86b 0.72c  
LSD0.01 W= 0.10      S = 0.08     W*S interaction = 0.15
Data are represented as mean ± S.E.
Statistical analysis is carried out by two way analysis of variance using COSTAT program
Unshared letters between brackets are significant value between groups
Table 2: Total flavonoid content (mg/g) in different grape pomaces using different extracting solvents.