Effect of feeding methods on the astaxanthin production by Phaffia rhodozyma in fed-batch process
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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.
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Effect 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 ...
متن کاملThe effect of gamma irradiation on astaxanthin synthetase encoding gene in two mutant strains of Phaffia rhodozyma
BACKGROUND AND OBJECTIVES Astaxanthin, an orange-red carotenoid pigment, acts as a protective agent against oxidative damage to cells in vivo. The astaxanthin synthetase gene (crtS) size consists of 3995 bp. This gene has been suggested to catalyse β-carotene to astaxanthin in Phaffia rhodozyma. The aim of this research was to find any possible changes in this gene in two mutant strains, Gam1 a...
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ژورنال
عنوان ژورنال: Brazilian Archives of Biology and Technology
سال: 2005
ISSN: 1516-8913
DOI: 10.1590/s1516-89132005000300010