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HPLC chromatograms of carotenoid extracts from tubes and leaves of petunia and calibrachoa. Saponified and non-saponified carotenoid extracts from 0.025 g f.w. of tubes and leaves were analyzed. Peaks: 1, (all-E)-neoxanthin; 2, (all-E)-violaxanthin; 3, (9′Z)-neoxanthin; 4, (9Z)-violaxanthin; 5, unknown xanthophyll; 6, (all-E)-lutein; 7, (all-E)-antheraxanthin + (all-E)-zeaxanthin; 8, (all-E)-β-carotene; C, chlorophylls. *Esterified xanthophylls.
