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Summary 1. The marine red algaLenormandia prolifera containsα-cryptoxanthin, a monohydroxy derivative ofα-carotene, as well asα- and β-carotene, lutein and zeaxanthin.   2. Chlorophylla and a trace of chlorophyllidea is present but no chlorophylld.   3. The chlorophyll/carotenoid ratio is 2.5 ± 0.7 (w/w), falling within the range reported for other species of the Rhodophyta.   4. α-Carotene is more abundant thanβ-carotene while lutein is the most abundant xanthophyll;α-cryptoxanthin accounts for only 2.4% of the total carotenoid content.   5. The possibility that theAmansia group is distinguished by containingα-cryptoxanthin and moreα- thanβ-carotene is discussed.   Kurzfassung In der RotalgeLenormandia prolifera (C. AG.) J. AG. ist neben den Xanthophyllen Lutein und Zeaxanthin auch das Xanthophyll α-Kryptoxanthin gefunden worden. Chlorophylla ist vorhanden, nicht jedoch Chlorophylld. α-Carotin tritt in größeren Mengen alsβ-Carotin auf, während Lutein häufiger als Zeaxanthin vorkommt. Der Gehalt an α-Kryptoxanthin beträgt nur 2,4% der Gesamtmenge an Carotinoiden.

Die lipidlöslichen Farbstoffe der marinen RotalgeLenormandia prolifera