Abstract
Giorgio, Anthony J. (University of Utah, Salt Lake City), G. E. Cartwright, and M. M. Wintrobe. Preparation of a copper-deficient medium for yeast growth. J. Bacteriol. 86:1037–1040. 1963.—A simple, rapid, and effective means was described for removing trace amounts of copper without removal of other growth nutrients from synthetic media. The complete synthetic medium minus added copper was batch-extracted with zinc dibenzyldithiocarbamate in carbon tetrachloride. The concentration of copper in extracted media was 0.3 to 1.7 μg per liter of media as compared with 8 μg per liter before extraction. Yeast growth in extracted media to which copper was added was comparable with growth in unextracted media. Yeast growth in copper-deficient media was significantly impaired. The growth requirement of two different strains of Saccharomyces cerevisiae was of the order of 10 μg of copper per liter of medium.
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Selected References
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