Research Article

Optimization of Hydrothermal and Diluted Acid Pretreatments of Tunisian Luffa cylindrica (L.) Fibers for 2G Bioethanol Production through the Cubic Central Composite Experimental Design CCD: Response Surface Methodology

Table 4

Physicochemical properties and proximate and ultimate analysis and lignocellulosic composition of Luffa cylindrica fibers.

Physicochemical properties

pH
Density

Proximate analysis (wt.%)

Dry matter
Volatile matter
Ash
Lipids

Ultimate analysis (wt.%)

H
C
S
N
O41.964

Lignocellulosic composition (wt.%)

Water-soluble polysaccharides
Lignins
α-cellulose
Hemicelluloses