Optimization of biomass and astaxanthin production by the yeast Phaffia rhodozyma
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چکیده
منابع مشابه
Astaxanthin production by Phaffia rhodozyma using a pH-stat control
Fed-batch essays using yeast Phaffia rhodozyma were performed to obtain high astaxanthin concentrations. The yeast was grown over an inexpensive media obtained from the Yucca fillifera date. Feeding was carried out through implantation of a pH-stat control system. Biomass (28.7 mg/l) and pigment (18 mg/l) concentration three folded those that were obtained by previous batch cultures.
متن کاملSelection 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.
متن کاملThe kinetic reduction of Cr(VI) by yeast Saccharomyces cerevisiae, Phaffia rhodozyma and their protoplasts.
Chromium in the sixth oxidation state may easily penetrate cellular membranes via non-specific sulfate transporters due to its tetrahedral symmetry (high similarity to SO4(2-) and HPO4(2-)). This feature makes chromium a toxic and hazardous pollutant responsible for the deterioration of midland water quality. The aim of the study was to evaluate the capacity of two yeast species - Saccharomyces...
متن کاملOverexpression of a bifunctional enzyme, CrtS, enhances astaxanthin synthesis through two pathways in Phaffia rhodozyma
BACKGROUND A moderate-temperature, astaxanthin-overproducing mutant strain (termed MK19) of Phaffia rhodozyma was generated in our laboratory. The intracellular astaxanthin content of MK19 was 17-fold higher than that of wild-type. The TLC profile of MK19 showed a band for an unknown carotenoid pigment between those of β-carotene and astaxanthin. In the present study, we attempted to identify t...
متن کاملEffect of astaxanthin produced by Phaffia rhodozyma on growth performance, meat quality, and fecal noxious gas emission in broilers.
A prospective alternative to antibiotics currently being evaluated is yeast and its derivative products. Phaffia rhodozyma is a species of yeast that produces the carotenoid pigment, astaxanthin (AST), which exhibits a wide variety of biological activities, including antioxidation in animals. A total of 432 one-day-old male broilers (Arbor Acres) were used in a 4-wk feeding experiment and each ...
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ژورنال
عنوان ژورنال: Revista Brasileira de Ciência do Solo
سال: 2004
ISSN: 0100-0683
DOI: 10.1590/s1516-93322004000300019