Heat-stable, salt-tolerant microbial xanthanase

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Process involving micro-organisms of different genera in the...

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435104, 435200, 435209, 435274, 435822, 435829, 435830, C12P 3900, C12N 942, C12N 120, C12R 101

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active

048867462

ABSTRACT:
A novel mixed bacterial culture isolated from soil by enrichment culture techniques produces a xanthanase enzyme complex which is stable to 65.degree. C. in the presence of salt. These properties render the heat-stable, salt-tolerant xanthanase useful for in situ degradation of xanthan gum in petroleum recovery fluids and other thickened industrial brines.

REFERENCES:
patent: 4410625 (1983-10-01), Cadmus
patent: 4690891 (1987-09-01), Hou et al.
M. Rinaudo et al., "Enzymic Hydrolysis of the Bacterial Polysaccharide Xanthan by Cellulase," Int. J. Biol. Macromol. 2: 45-48 (1980) [Chem. Abstr. 92:239, Abstr. 176420a (1980)].
M. E. Slodki et al., "Production and Stability of Xanthan Gums; Xanthanases and Their Applicability," Int. Biores. J. 1: 190-199 (1985).
M. C. Cadmus et al., "Enzymic Breakage of Xanthan Gum Solution Viscosity in the Presence of Salts," Dev. Ind. Microbiol. 26: 281-289 (1985).
M. C. Cadmus et al., "Bacterial Degradation of Xanthan Gum," In Industrial Polysaccharides: Genetic Engineering, Structure/Property Relations and Applications, ed. M. Yalpani, pp. 101-107 (1987).

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