Impact of cultivar selection and process optimization on ethanol yield from different varieties of sugarcane

Table 6 Ethanol yield per hectare from different varieties of sugarcane (55, 70, 74 and 120)

	55	70	74	120
Cane yields (wet ton/ha)	105.5^a	108^a	105.5^a	65^b
Sucrose content (kg/ton wet cane)	127.5 ^a	152 ^a	137 ^a	126^b
Sugar juice content (kg/ton wet cane)	149^a	163^a	149^a	140^b
Bagasse content (kg/ton wet cane)	147^a	127^a	161^a	133^b
Ethanol yield (L/ha)
¹Juice ethanol	9 045	10 169	9 074	5 248
²Bagasse ethanol (glucose + xylose)	3 888	3 554	3 574	1 814
³Combined (juice + bagasse)	12 933	13 723	12 648	7 062

^aThe cane yield, sugar juice, sucrose and bagasse content for varieties 55, 70 and 74 were provided by SASRI, and they represent the average of two harvests (2009 and 2011).
^bThe cane yield, sugar juice and bagasse content for sample 120 were obtained from the literature according to the average values of the industrial sugarcane.
¹Juice ethanol is the ethanol that can be produced by fermentation of juice sugars (sucrose, glucose and fructose).
²Bagasse ethanol is the ethanol that can be produced by fermentation of the xylose obtained after pretreatment and SSF of the pretreated bagasse.
³Combined ethanol yield is the realistic total ethanol that can be obtained from the sugar juice and bagasse.
ha, hectare.

ISSN: 2731-3654