Carotenoids content (mg/l) P1
Test Control
Exposure time(h) 0 629.80 ± 39.00 629.80 ± 39.00 ns
1 629.80 ± 39.00 629.80 ± 39.00 ns
2 629.80 ± 39.00 629.80 ± 39.00 ns
3 629.80 ± 39.00 629.80 ± 39.00 ns
5 629.77 ± 38.95 629.80 ± 39.00 ns
7 629.77 ± 38.95 629.80 ± 39.00 ns
9 629.73 ± 39.00 629.80 ± 39.00 ns
12 629.63 ± 38.95 629.80 ± 39.00 ns
14 629.63 ± 38.95 629.77 ± 38.95 ns
P2 ns ns  
The values are given as mean ± standard deviation
1Comparison of carotenoids content between assay and control at the same exposure time
2Comparison of carotenoids content between different exposure time ns: No significant difference at P<0.05
Table 1: Variation of carotenoids content of CPO (essay and control) according to exposure time.