Table 2.

Centesimal composition of Shiraz grape peels.

Centesimal composition	Means ± SD
Moisture (%)	68.82 ± 1.07
A w	0.870 ± 0.01
Ash (%)	4.12 ± 0.05
pH	3.54 ± 0.05
Total titratable acidity (%)	20.65 ± 0.08
Acidity in citric acid (%)	1.35 ± 0.01
Lipids (%)	1.48 ± 0.29
Proteins (%)	2.32 ± 0.33
Total soluble solids (°Brix)	1.90 ± 0.01
Hemicellulose	4.5 ± 0.66
Cellulose	13.4 ± 0.05
Lignin	15.3 ± 0.88

Results are expressed as the mean ± standard deviation.