Influence of glycerol and ornithine feeding on clavulanic acid production by Streptomyces clavuligerus

Author(s)

Teodoro, J. C. ^[1] ; Baptista-Neto, A. ^[1] ; Araujo, M. L. G. C. ^[2] ; Hokka, C. O. ^[1] ; Badino, A. C. ^[1]

Affiliation

^[1] Univ Fed Sao Carlos, Dept Chem Engn, BR-13565905 Sao Carlos, SP - Brazil

^[2] Sao Paulo State Univ, UNESP, Inst Chem, Dept Biochem & Technol Chem, BR-14800900 Araraquara, SP - Brazil

• Document type: Journal article
• Source: Brazilian Journal of Chemical Engineering; v. 27, n. 4, p. 499-506, OCT-DEC 2010.
• Web of Science Citations: 15

Abstract

The influence of glycerol and ornithine feeding on clavulanic acid (CA) production by Streptomyces clavuligerus was investigated. In batch experiments, CA maximum concentration (Cp max) ranged randomly from 430 to 560 mg.L-1, with a maximum increase of 10% in relation to the control run, without ornithine. However, the maximum volumetric productivity of CA (Pp max) of 13.7 mg.L-1.h-1 was obtained with 0.66 g.L-1 of ornithine, 44.2% higher than the Pp max in the control run. In fed-batch experiments, Cp max varied within the narrow range from 1.254 to 1.405 g.L-1, 2.5 times higher than that obtained in the control run. The presence of ornithine increased the Pp max, although it influenced only slightly the Cp max. Concerning glycerol, the highest CA production of 1.6 g.L-1 was obtained in the fed-batch with glycerol and ornithine (180 and 3.7 g.L−1) in a 10-L bioreactor, showing a positive effect of ornithine and glycerol, in the proper proportion (48.6:1), on CA biosynthesis. (AU)

• FAPESP's process: 05/55079-4 - Production and purification of clavulanic acid, cephamycin C and other bioactive metabolites of Streptomyces
• Grantee: Carlos Osamu Hokka
• Support Opportunities: Research Projects - Thematic Grants