*Mixotrophyc Culture of* Dunaliella salina *in Cuban Fishing Wastewaters DOI: http://dx.doi.org/10.5772/intechopen.104803*


#### **Table 2.**

*Summarized information of the calculation about the unitary.*


#### **Table 3.**

*Reagents to prepare the different culture medium.*

According to the unitary costs that are presented in the **Table 4**, for the cultivation means used for the microalgae *D. salina* the most economical is since in fact the one that offered better results in the production of ß-carotene, without considering the addition of alone NaCl it represents \$0.09 USD, for each m3 of cultivation. The cost of the salt (NaCl) that ascends \$5.94 USD, for m3 of cultivation represent an initial expense, because when recycling 95% of the medium after the harvesting of microalgae, alone it would be necessary to add 5% of this cost (\$0.30/m3 ) to the represented value, but it must de adding to all the culture medium, because for the comparison, all they use it.


#### **Table 4.**

*The most economical reagents.*
