Abstract
A marine cold tolerant diatom Mayamaea sp. JPCC CTDA0820 which showed high lipid content of 47 % at 10 °C was isolated from the coastal area of Kitakyushu city, Japan as a candidate for biodiesel production in winter in Japan. This strain can be cultured at a wide range of temperature from 5 °C to 28 °C. The biomass productivity and the oil productivity were 31 g/m2/day and 9.8 g/m2/day at the optimized culture conditions at 10 °C, respectively. The results highly suggested that the strain JPCC CTDA0820 was appropriate for the biodiesel production in cool climates. Mayamaea sp. JPCC CTDA0820 were succeeded in outdoor mass cultivation in winter (Nov. 25- Dec. 5). With the combination of our previously reported promising biodiesel producing diatom Fistulifera solaris JPCC DA0580, the stable biodiesel production through the year can be achieved.
