Abstract
Previous papers of this series reported on the new method of optical resolution of amino acids. This new method is a culture of a soil bacteria in a synthetic medium containing a benzoyl derivative of DL-amino acid as the carbon source and ammonia as the nitrogen source, and L-amino acid and benzoyl-D-amino acid are obtained in a good yield. Lysine, methionine, phenylalanine, leucine, threonine, glutamic acid, aspartic acid, p-methoxyphenylalanine, and 3, 4-methylenedioxyphenylalanine have been resolved into optical isomers by this new method. In the present series of work, three kinds of soil samples from different localities were examined to find a bacteria capable of effecting optical resolution of lysine and three strains, KT-301, KT-305, and KT-307, were easily isolated. It was thereby considered that bacteria that effects optical resolution is distributed widely and could easily be isolated from the soil at any time.
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