Response Surface Optimization of Bioethanol Production from Sugarcane Molasses by Pichia veronae Strain HSC-22

Table 1

Parameters and levels of the experimental design.

Parameters	Levels
	−1	0	+1
pH	4	5	6
Molasses concentration, wt.% (w : v)	15	20	25
Temp., °C	25	30	35
Mixing rate, rpm	50	100	150
Incubation period, h	24	48	72