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. 1970 Oct;104(1):272–274. doi: 10.1128/jb.104.1.272-274.1970

Isolation and Identification of Echinenone from Micrococcus roseus

E H Schwartzel 1, J J Cooney 1
PMCID: PMC248210  PMID: 5473895

Abstract

An orange carotenoid from Micrococcus roseus was purified by solvent partitioning followed by column and thin-layer chromatography. Absorption spectra, chromatographic mobility, and partition coefficient suggested that the pigment was echinenone (4-keto-β-carotene). Reduction yielded a pigment with the spectral and polar properties of isocryptoxanthin (4-hydroxy-β-carotene), the expected product. The orange pigment and its reduction product co-chromatographed with the respective authentic pigments, confirming the original pigment as echinenone. To our knowledge echinenone has not been identified previously as a bacterial pigment.

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Selected References

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