Comparing submerged and solid-state fermentation of agro-industrial residues for the production and characterization of lipase by Trichoderma harzianum

Table 4 Economic evaluation of the culture medium in SSF and SF for lipase production by T. harzianum

Process/culture medium	Total activity (U)^b	Activity (U/g oil)	Refined oil price (US$/kg)^c	Cost US$/U(million)
SSF/castor bean-sugarcane^a	40	434	4.65	0.98
SF/olive oil	57	154	4.65	11.11
SF/soybean oil	28	76	1.11	5.37

^aCalculation considering the amount of olive oil added to the solid substrate (0.092 g/10 g solid substrate)
^b(U total): enzymatic activity unit in 40 mL crude extract in SF or 10 g solid substrate in SSF after extraction with NaCl 1 % (w/v) solution
^cSource: Ministry of Agriculture, Livestock and Supply, Brazil, February and March 2010

ISSN: 1869-2044