Repression of galactose utilization by glucose in the citrate-producing yeastCandida guilliermondii |
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Authors: | Noemi A. Gutierrez Ian A. McKay Christopher E. French John D. Brooks Ian S. Maddox |
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Affiliation: | (1) Biotechnology Department, Massey University, Palmerston North, New Zealand;(2) Food Technology Department, Massey University, Palmerston North, New Zealand |
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Abstract: | Summary A strain of the yeastCandida guilliermondii has been shown to produce citric acid from galactose to a similar extent, and at a similar rate, as from glucose. At an initial concentration of 36 g/l of either glucose or galactose, citric acid production exceeds 13 g/l. When galactose and glucose are present in a mixture, however, galactose utilization is delayed until most of the glucose has been utilized, providing evidence for catabolite repression. |
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Keywords: | Citric acid production Candida guiliermondii Galactose Glucose Catabolite repression |
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