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6-APA production by free and agar immobilized bacteria   Sanjoy Das and (Late) Ashoke Kumar Dolui

6-APA production by free and agar immobilized bacteria

136 страниц. 2012 год.
LAP Lambert Academic Publishing
?- Lactam antibiotics, in particular penicillins and cephalosporins have the annual sales of ~ 65% of the total antibiotics market. Therefore the annual expenditure of penicillin G acylase (PGA) is estimated to be in the range of 10-30 million tons. PGA immobilization preparations (both enzyme and cells) to successfully produce 10,000 tons of total 6-aminopenicillanic acid (6-APA) provide a novel direction to the antibiotics industries promoting a safer and cleaner environment. In the present study, different bacterial samples were isolated from soil of different places of Dibrugarh and screened for biotransformation ability to produce 6-APA. Among ten of them, three gram positive bacterial samples designated as AKDD-2, AKDD-4 and AKDD-6 showed the production of 6-APA from penicillin G. Assessment of 6-APA production after incubation in penicillin G (2mg/ml) by three different samples separately in free and agar immobilization state was done by HPLC analysis. Reusability of...
 
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