段調光を用いたPavlova lutheriの大量培養について

概要

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The culturing of micro-algae is important to the production of seeds for shellfish. We have developed an economical method of doing this that uses step-style light control to reduce the production cost, and appeared light environment of the culture chamber. The light intensity is increased10% to30% on the 3^<rd> day (1.5×10^6cells・ml^<-1>), from 30% to 60% on the 6^<th day (6.0×10^6cells・ml^<-1>) and from 60% to 100% on the 9th day (1.4×10^7cells・ml^<-1>) of cultivation. We cultivated P. lutheri using step-style light control in a 200-l chamber; the other factors were same as for conventional 100% stable light intensity cultivation. The dark zone of the chamber, which was less initially than 1μmol・m^<-2>・s^<-1>, increased with the cell density. It occupied 50% of the chamber at 1.5×10^7cells・ml^<-1> and 60% at 2.2×10^7cells・ml^<-1>. The growth curve was identical to that for stable 100% light intensity. Then it is possible that the consumption of electrical power was 40% lower with step-style light control.
社団法人照明学会の論文
2001-08-01