title: Semi-continuous cultivation of Haematococcus pluvialis for commercial production.
abstract: The objectives of the present study on the growth of Haematococcus pluvialis were to indicate the effects of a long-term semi-continuous cultivation, sterilization, carbon dioxide, and different culture media by using artesian well water. This investigation was an enterprise in order to commercialize the production economically. When the effect of CO(2) was investigated in basal culture medium, the influence of sterilization was also researched in Rudic's culture medium in vertical panel-type photobioreactors for 31 days of semi-continuous cultivation. The maximum cell concentration of 10.55 x 10(5) cells ml(-1), which corresponds to the growth rate of 0.271 day(-1) with the areal productivity of 3.531 g m(-2) day(-1), was found in non-sterilized RM medium on the 24th day of the third run of semi-continuous cultivation at a renewal rate of 50% in a vertical panel-type photobioreactor.
authors.affiliation: Department of Bioengineering, Faculty of Engineering, Ege University, Izmir 35100, Turkey. esraimamoglu@yahoo.com
authors.forename: Esra
authors.initials: E
authors.lastname: Imamoglu
authors.forename: Meltem Conk
authors.initials: MC
authors.lastname: Dalay
authors.forename: Fazilet Vardar
authors.initials: FV
authors.lastname: Sukan
mesh_terms: D002245:Carbon Dioxide / Q000494:pharmacology; D003470:Culture Media / Q000494:pharmacology; D046508:Culture Techniques / Q000379:methods*; D007700:Kinetics; D008027:Light; D013242:Sterilization; D013997:Time Factors; D016823:Volvocida / Q000187:drug effects / Q000254:growth & development* / Q000528:radiation effects
chemical_list: D003470:Culture Media; D002245:Carbon Dioxide