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  • 1
    Electronic Resource
    Electronic Resource
    Sterols of Ochromonas danica and Ochromonas malhamensis (1968)
    s.l. : American Chemical Society
    Biochemistry 7 (1968), S. 1698-1706 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00845a012
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  • 2
    Electronic Resource
    Electronic Resource
    The carotenoids of photosynthetic bacteria (1956)
    Springer
    Archives of microbiology 24 (1956), S. 305-312 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary 1. A Chromatium sp. produces mainly lycopene (rhodopurpurene), spirilloxanthin, lycoxanthin (rhodopin), and a new pigment provisionally termed P-481. Lycoxanthin is the major component. Traces of three other polyenes were also observed. 2. Diphenylamine cultures of Chromatium show reduced synthesis of the normal constituent pigments and stimulation of the synthesis of the more saturated phytofluene series: Two new polyenes of the phytofluene series were observed; they were monohydroxy derivatives with chromophoric systems similar to those of ζ-carotene and neurosporene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00419015
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  • 3
    Electronic Resource
    Electronic Resource
    The carotenoids of photosynthetic bacteria (1956)
    Springer
    Archives of microbiology 24 (1956), S. 313-322 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary 1. Three strains ofR. palustris synthesize lycopene,P 481, spirilloxanthin, lycoxanthin, hydroxy-P 481 and “demethylated” spirilloxanthin under both aerobic and anaerobic conditions. One strain (8289) is characterized by a high relative concentration of lycoxanthin. 2. R. capsulatus andR. gelatinosa synthesize lycopene,Y, R, hydroxy-Y and hydroxy-R; the latter produces in addition spirilloxanthin and a new pigment,P 512. In both bacteriaY and hydroxy-Y predominate in anaerobic cultures andR and hydroxy-R in aerobic cultures. 3. Rsp. photometricum synthesizes lycopene,P 481, lycoxanthin, hydroxy-P 481 and lycophyll andRsp. molischianum, lycopene and lycoxanthin only. 4. Diphenylamine stimulates the synthesis of more saturated polyenes inR. palustris but has little effect onR. gelatinosa andR. capsulatus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00693102
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Comparison of the Reaction of N -bromo-succinimide with Phytoene and Lycopersene (1963)
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 491-492 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In a typical experiment with phytoene (ex carrot oil) 20 mg were treated with N-bromosuccinimide according to the method of Zechmeister and Koe9 for 8-10 min at 80-85 under carbon dioxide. The reaction mixture was chromatographed on a column of either CaO/'Celite' or alumina (Brockmann, grade V). ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/199491a0
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  • 5
    Electronic Resource
    Electronic Resource
    Origin of the Methoxyl Groups in Spirilloxanthin—a Carotenoid synthesized by the Photosynthetic Bacterium Rhodo-spirillum rubrum (1958)
    [s.l.] : Nature Publishing Group
    Nature 182 (1958), S. 1304-1305 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The only carotenoids which are known to contain such supernumerary groups are those predominating in the photosynthetic bacteria. These have methoxyl groups attached to either positions 3 and 3 or 4 and 4 ; the best known pigment of this type is Spirilloxanthin3 (Fig. 1), which represents more ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1821304a0
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  • 6
    Electronic Resource
    Electronic Resource
    Occurrence of Astaxanthin in the Flower Petals of Adonis annua L. (1959)
    [s.l.] : Nature Publishing Group
    Nature 184 (1959), S. 1714-1715 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] There seems little doubt that the pigment present in the petals of Adonis anuida L. is an ester of astaxanthin or a very closely related pigment. Up-to now astaxanthin, which is widely distributed in invertebrates, has been unequivocally demonstrated in the plant world only in algae under ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1841714a0
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  • 7
    Electronic Resource
    Electronic Resource
    Some Unusual Carotenoids from Two Nudibranch Slugs and a Lamprid Fish (1955)
    [s.l.] : Nature Publishing Group
    Nature 175 (1955), S. 1086-1087 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Archidoris montereyensis, the sea lemon, is a nudibranch of generally light, slightly dirty yellow colour, with small scattered brown, greyish or black skin-spots and a pair of elongated, finger-like, pointed rhinophore tentacles. Two whole specimens were finely comminuted under acetone in a Waring ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1751086a0
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  • 8
    Electronic Resource
    Electronic Resource
    Carotenoids in the Heart Urchin, Echinocardium cordatum (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 358-359 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Echinenone, first isolated from the urchin Para-centrotus lividus3, appears to be widely distributed in marine invertebrates, for apart from its presence in Echinocardium cordatum, noted here, it also occurs in the urchins Echinus esculentus2 and E. pictus*, in the gastropods Patella vulgata ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167358b0
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  • 9
    Electronic Resource
    Electronic Resource
    Carotenoid Metabolism during Development of Lobster Eggs (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 559-559 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It was considered of interest to see if a marine arthropod behaved in this way, or whether it followed the pattern observed by Goodwin3 using the locusts Schistocerca gregaria, and Locusta migratoria migra-torioides. In these insects the amount of p-carotene (which is present in considerable ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167559a0
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  • 10
    Electronic Resource
    Electronic Resource
    Biosynthesis of Riboflavin in Cell-Free Systems (1961)
    [s.l.] : Nature Publishing Group
    Nature 191 (1961), S. 772-774 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT has now been well established that ring C and N-9 and N-10 of ring B of riboflavin (I) are formed from a purine (II) derivative following the loss of C-8 of the purine1-2. For example, Plaut3 and his colleagues observed, that the labelling pattern in riboflavin synthesized by the mould Ashbya ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/191772a0
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