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The asymmetric microbial reduction of phenylglyoxylic acid (PGA) to (R)-mandelic acid ((R)-MA) with immobilized Saccharomyces cerevisiae cells on globular chitosan was studied. The immobilization conditions and characterization of the immobilized cells were carried out. Chitosan–acetic acid solution was injected into a mixture of 20% NaOH and 30% CH 3 OH aqueous solution to obtain globular...
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