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Carbon paste electrode modified with baker' and wine yeast Saccharomyces cerevisiae (a source of flavocytochrome b 2 ) were investigated as amperometric biosensors for l-lactic acid. Before immobilization on the electrode surface, yeast cells were pretreated with various electrolytes, alcohols and weak organic acids. Electrode responses to l-lactic acid were tested in the presence of various...
Carbon paste electrodes modified with baker's yeast Saccharomyces cerevisiae (a source of flavocytochrome b 2 ) were investigated as amperometric biosensors for lactic acid. Phenazine methosulphate was used as a mediator. The optimal operational conditions of the electrodes were: an operating potential 0.0 V, solution pH 7.2, concentration of phenazine methosulphate in solution 0.2 mM. A linear...
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