Green Pi
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Article Record
Title:Improvement of Phytase Activity by a New Saccharomyces cerevisiae Strain Using Statistical Optimization
Section:General -
Author:Ries EF, Alves Macedo G
URL:Enzyme Res
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Using statistical optimization, we enhanced the activity of phytase by a new Saccharomyces cerevisiae strain cultured in mineral medium. Concentrations of carbon source and inducer of phytase production were optimized using a 2(2) full factorial CCD and response surface methodology (RSM). Urea was fixed as nitrogen source in culture medium (0.15%, w/v). The culture medium consisting of 2.5% sucrose and 0.5% sodium phytate optimally supported the maximum phytase activity. In addition, we found that culture of the yeast at 35°C with shaking at 150 rpm supports maximum phytase production. The validity of this model was verified by culturing the organisms in flasks on a shaker. Using the optimized media and growth conditions, we obtained a 10-fold improvement in the production of phytase by S. cerevisiae.

Submited to Green Pi:2010-06-21 By admin
Modified on Green Pi:2013-03-28 By farzi