Biotechnology Letters

, Volume 13, Issue 6, pp 427–432 | Cite as

Production of D-lactic acid from 1,2-propanediol byPseudomonas sp. strain TB-135

  • Toshiya Shigeno
  • Tadaatsu Nakahara
Article

Summary

A newly isolated bacterium, strain TB-135, produces solely D-lactic acid from 1,2-propanediol (1,2-PD). From taxonomical studies, the strain was concluded to belong to the genusPseudomonas. The optimal conditions for the acid production were found to be at 4% 1,2-PD and 0.2% yeast extract, when the strain produced 21mg/ml of the acid of a high optical purity (over 99% e.e.) after 4days of cultivation. Since it was considered that the acid was produced from (R)-(−)-1,2-PD, the molar yield was estimated to be 86%.

Keywords

Organic Chemistry Optimal Condition Yeast Extract Bioorganic Chemistry Acid Production 

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Copyright information

© Science and Technology Letters 1991

Authors and Affiliations

  • Toshiya Shigeno
    • 1
  • Tadaatsu Nakahara
    • 1
  1. 1.Institute of Applied BiochemistryUniversity of TsukubaTsukuba, IbarakiJapan

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