Figure 1From: Overexpression of a bifunctional enzyme, CrtS, enhances astaxanthin synthesis through two pathways in Phaffia rhodozyma HPLC and TLC profiles of carotenoids produced by P. rhodozyma mutant strain MK19. Cells were cultured in flasks for 120 h. a HPLC profiles (detection wavelength 480 nm). b TLC profiles. Peak numbers in a correspond to arrow numbers in b. 1 astaxanthin; 2 unknown carotenoid; 3,4 keto derivatives; 5 β-carotene. Astaxanthin (66% of total carotenoids) was the predominant carotenoid. The unknown pigment (2), rather than β-carotene (5), was the second most abundant.Back to article page