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Sep 26, 2006

Kyowa Hakko Develops Production Method for L-Tyrosine Based on Fermentation

  • Kyowa Hakko developed what it claims is the world’s first fermentation-based method for the commercial production of L-Tyrosine. The company plans to start full-scale production in 2007.

    Previously, the main production methods for L-Tyrosine used animal protein. However, a growing number of customers prefer products made from nonanimal sources. Although there are existing production methods that use plant sources, such as soybeans, it is difficult to produce large amounts for an economical price, according to the company.

    To resolve that issue, Kyowa Hakko developed a production method, based on fermentation that is suitable for mass production of L-Tyrosine. The company discovered microorganisms with superior characteristics for the production of L-Tyrosine and drew on its fermentation and purification technologies. With the new method, Kyowa Hakko reports that it will be able to provide a high quality and stable supply of L-Tyrosine to customers worldwide.


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