The content varied from 6.51±0.3 to 17.44±0.24 µg/g dry cell weight, and the highest productivity was evident in cells cultured for 4 days (Fig. 3). Generally, carotenoid-producing red yeasts such as Rhodosporidium spp., Rhodotorula spp., Sporidiobolus spp., and Sporobolomyces spp. synthesize three carotenoids (β-carotene, torulene, and torularhodin) and produce carotenoids at more than 10–900 µg/g dry cell weight. However, the overall production of carotenoids has been significantly influenced according to the various growth and extraction conditions (Sperstad et al., 2006; Park, 2007).