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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received August 11, 2013
Accepted November 19, 2013
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Preparation of ursodeoxycholic acid by direct electro-reduction of 7-ketolithocholic acid

State Key Laboratory of Bioreactor Engineering, Department of Bioengineering, East China University of Science & Technology, 130 Meilong Rd., Shanghai 200237, China
caoxj@ecust.edu.cn
Korean Journal of Chemical Engineering, July 2014, 31(7), 1276-1280(5), 10.1007/s11814-013-0245-y
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Abstract

A novel method of producing ursodeoxycholic acid was developed through direct electro-reduction of 7-ketolithocholic acid in a divided electrolytic cell. Titanium ruthenium mesh electrode was used as the anode, while high purity lead plate was used as the cathode. The process was optimized with regards to the electrolyte, temperature, concentration of methanol, current density and concentration of anolyte. When potassium bromide was used as the_x000D_ electrolyte, the saturated solution of 7-ketolithocholic acid in 85-93% (v/v) methanol, current density 9.52-28.6 A/m2 and concentration of anolyte at 4-6% (w/w), the maximum percentage yield of ursodeoxycholic acid could be 47%. The method will provide a potential approach for large-scale production of ursodeoxycholic acid.

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