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손태일 ( Tae Il Son) 한국공업화학회 1993 공업화학 Vol.4 No.2
The industry of amino acids has developed for the synthetic methods, zymotechnics from the methods of extraction. In the present, part of amino acids (L-cystine, L-tyrosine, etc.) is manufactured by the methods of extraction, but most of amino acids is produced by synthetic methods, zymotechnics. Among the methods, the synthetic methods use of cyanic acid, which generate a large of waste water by acid or alkali in hydrolysis. In this point of view, improved new synthetic methods are demanded for being the influence of environment. This article introduces new synthetic methods of phenyl alnine, further more, the recent of research results are introduced to prepare the derivative α-keto acids of precursor for preparing more than particular amino acids.