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Selection of Astaxanthin-Overproducing Mutants of Phaffia rhodozyma with β-Ionone

By M. J. Lewis, N. Ragot, M. C. Berlant and M. Miranda


β-Ionone, an end ring analog of β-carotene, inhibits astaxanthin production in the red yeast Phaffia rhodozyma. Astaxanthin-overproducing mutants of this yeast are easily spotted on β-ionone-containing yeast malt agar plates. β-Ionone appears to block astaxanthin synthesis at the β-carotene level

Topics: Physiology and Biotechnology
Year: 1990
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Provided by: PubMed Central
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