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Carotenoid analysis in leaves of Ipomoea plants. Saponified (A) and non-saponified (B) carotenoids extracted from 0.1 g fresh weight (FW) of leaves of Ipomoea sp. were analysed by HPLC. V, violaxanthin; N, neoxanthin; L, lutein; Z, zeaxanthin; A, antheraxanthin; β, β-carotene.
