FOOD SCIENCE ›› 2005, Vol. 26 ›› Issue (2): 159-161.

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Study on Extraction and Purificaion of Superoxide Dismutase from Sacdharomyces cerevisiae by Two-steps Organic Solvent Precipitation

 YANG  Ming-Yan, ZHANG  Xiao-Qi, SHEN  Jian, GUO  Ai-Lian   

  1. 1.College of Life Science,Northwest University; 2.Microbiology Institute of Shaanxi
  • Online:2005-02-15 Published:2011-09-19

Abstract: After fermentation, S.cerevisiae BUV094 was purified by three procedures consisting of pH regulation and two-steps acetone precipitation.The purified SOD enzymatic specific activity recovery was 1015U/mg and yield 65.2%.The PAGE activity stain showed that S.cervisiace SOD had four isoenzymes. The types identification showed that it was a kind of Cu/Zn SOD.

Key words:  S.cerevisiae, SOD, two-steps acetone precipition, extration, purification