Bioconversion of Sugarcane Biomass into Ethanol: An Overview about Composition, Pretreatment Methods, Detoxification of Hydrolysates, Enzymatic Saccharification, and Ethanol Fermentation

Table 2

Chemical composition (% w/w, dry basis) of Brazilian SB reported in the literature.

Component (%)	Reference
	Pitarelo [27]^1*	da Silva et al. [28]^2	Canilha et al. [19]^3*	Rocha et al. [15]^4*	Brienzo et al. [29]^5	Rabelo et al. [30]^6
Cellulose	41.1	38.8	45.0	45.5	42.4	38.4
Hemicellulose	22.7	26.0	25.8	27.0	25.2	23.2
Lignin	31.4	32.4^#	19.1	21.1	19.6	25.0
Ash	2.4	2.8	1.0	2.2	1.6	1.5
Extractives	6.8	—	9.1	4.6	—	—
Others	—	—	—	—	—	—

*Extractives-free basis.
^#Lignin and others.
Extracting solvents: ¹dichloromethane, ethanol : toluene (1 : 2), ethanol, and hot water; ²none; ³water and ethanol; ⁴ethanol; ⁵ethanol; ⁶none.