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Phaffia rhodozyma: colorful odyssey
1Department of Food Microbiology and Toxicology, University of Wisconsin, Madison, WI 53706, USA. eajohnso@wisc.edu
Summary
Phaffia rhodozyma, now Xanthophyllomyces dendrorhous, is a yeast that produces astaxanthin, a valuable pigment. Research explores its biotechnological potential for producing this carotenoid for animal feed and other applications.
Area of Science:
- Microbiology
- Yeast Ecology
- Biotechnology
Background:
- Phaffia rhodozyma, identified in the 1960s, exhibits greater biodiversity than initially recognized, with distinct anamorph and teleomorph species.
- This yeast is notable for its significant production of astaxanthin, a high-value carotenoid pigment.
Discussion:
- Astaxanthin biosynthesis in P. rhodozyma is influenced by nutritional and environmental factors.
- Astaxanthin confers protection against reactive oxygen species, highlighting its biological significance.
- The yeast has been proposed as a source of natural pigment for animal diets, including salmonids and poultry.
Key Insights:
- Mutants of P. rhodozyma have been isolated, displaying varied pigmentation due to carotenogenesis alterations.
- Astaxanthin production by P. rhodozyma/Xanthomyces dendrorhous is a key focus for industrial applications.
- The yeast's ability to synthesize astaxanthin makes it a valuable candidate for biotechnological development.
Outlook:
- Continued research in yeast biology and biotechnology is expected to further elucidate P. rhodozyma/X. dendrorhous.
- The biotechnological production of astaxanthin from this yeast holds promise for various industries.
- Future applications may expand based on ongoing fundamental and applied research into this unique microorganism.