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Industrial Biotransformations

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Hydantoinase / Carbamoylase<br />

Pseudomonas sp.<br />

4) Process parameters<br />

conversion: 95 %<br />

yield: 80 %<br />

selectivity: 84 %<br />

chemical purity: 98.5 %<br />

reactor type: batch<br />

reactor volume: 15,000 L<br />

capacity: pilot scale<br />

residence time: 15 – 20 h<br />

space-time-yield: 57.6 g · L –1 ·h –1<br />

down stream processing: concentration and crystallization<br />

enzyme supplier: Captive Production, India<br />

production site: Dr. Vig Medicaments, India<br />

company: Dr. Vig Medicaments, India<br />

5) Product application<br />

● The product is used as a chemical intermediate in the synthesis of amoxycillin/cefadroxil<br />

through ‘Dane’-salt formation and of ampicillin/cefalexin through acid chloride formation<br />

with 6-APA/7-ADCA respectively.<br />

6) Literature<br />

● Vig, C. (1997) personal communication<br />

416<br />

EC 3.5.2.4 / 3.5.1.77

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