Table 1.

Carotenoid Concentrations (ug carotenoid/g cells; mean ± SEM; n = 5 trials, duplicate analyses/trial) in cells grown in ¹³C-glucose-containing carotenoid production media with CPTA for 1, 2, or 3 serial labeling cycles.

Serial Labeling Cycle	Total Lycopene	Phytoene	Phytofluene	Total Carotenoids
1	38.4 ± 3.4	2.9 ± 0.1	1.0 ± 0.1	42.2 ± 3.5
2	28.9 ± 4.6	2.6 ± 0.3	0.8 ± 0.1	32.3 ± 5.0
3	31.0± 3.7	2.7 ± 0.2	0.8 ± 0.1	34.4 ± 3.9