Pigment production by a new thermotolerant microalga Coelastrella sp. F50
quantities of oil accumulated as the cells experienced stress due to nutrient deficiency. This microalga
could withstand temperature of 50 C for more than 8 h, which is a necessary trait for outdoor cultivation
in tropical areas. The pigments contain astaxanthin, lutein, canthaxanthin, and b-carotene as analysed by
using HPLC.