Selection of Astaxanthin-Overproducing Mutants of Phaffia rhodozyma with beta-Ionone.
beta-Ionone, an end ring analog of beta-carotene, inhibits astaxanthin production in the red yeast Phaffia rhodozyma. Astaxanthin-overproducing mutants of this yeast are easily spotted on beta-ionone-containing yeast malt agar plates. beta-Ionone appears to block astaxanthin synthesis at the beta-carotene level.
Lewis
M J
MJ
Department of Food Science and Technology, University of California, Davis, California 95616.
Ragot
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N
Berlant
M C
MC
Miranda
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M