Table 3.
Percentage of (β-carotene isomers %a |
||||||||
---|---|---|---|---|---|---|---|---|
Direct
|
After extraction
|
|||||||
Sample | All-trans | 9-cis | 13-cis | 15-cis | All-trans | 9-cis | 13-cis | 15-cis |
Almost pure all-trans-β-carotene | 97.2 | 0.7 | 2.2 | – | 97.4 | 0.8 | 1.9 | – |
Heat-isomerization (β-carotene | 73.0 | 1.1 | 23.4 | 2.5 | 72.6 | 1.6 | 24.0 | 1.8 |
Total β-carotene = 100%.