Lawrence N. Halfen

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1. The effect of different culture temperatures upon the carotenoid composition ofAnacystis nidulans was determined quantitatively using cultures grown at temperatures ranging from 17–38°C under otherwise identical conditions. 2. This organism contained β-carotene, echinenone, canthaxanthin, 2′-O-rhamnosyl-myxol (myxoxanthophyll) and(More)
1. The carotenoids of a gliding filamentous organism containing bacteriochlorophylls a and c were as follows: β-, γ- and retro-dehydro-γ-carotene, echinenone, 4-keto-γ-carotene, 1′-hydroxy-1′,2′-dihydro-γ-carotene, O-hexosyl-1′-hydroxy-1′,2′-dihydro-γ-carotene, O-glycosyl-1′-hydroxy-1′,2′-dihydro-3′,4′-didehydro-γ-carotene and(More)
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