4. Conclusion
The results indicate that the yeast strains isolated from Japan have great potential for biodiesel production. JCM 24502 and JCM 24511, tentatively identified as Cryptococcus sp., reached a lipid content of 56.77 ± 2.80% and 61.53 ± 2.25%, respectively. Based on these studies it was concluded that the most promising strain was Cryptococcus musci JCM 24512, with a lipid content of 44.7 ± 15.04% and lipid productivity of 0.37 ± 0.15 g/L/day; during the first 2 days of cultivation this reached 0.66 ± 0.14 g/L/day. High lipid productivity is a crucial characteristic of any species used for biodiesel production.