Influence of the initial ph of sugar cane juice on the production of levan by Zymomonas mobilis ATCC 31821

Influence of the initial ph of sugar cane juice on the production of levan by Zymomonas mobilis ATCC 31821

Authors

  • Marcia Sadae Tano Universidade Estadual de Londrina
  • João Batista Buzato Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0375.2002v23n1p87

Keywords:

Levan, pH, Zymomonas mobilis, Sugar cane juice.

Abstract

The influence of initial pH of sugar cane juice in high concentration was investigated for levan production by Zymomonas mobilis. In the initial pH of medium of 5.4; 5.9 and 6..3 the levan concentration achieved 1.66; 2.54 and 3.83 g/L, respectively, in 48 hours of fermentation. The final levan concentration in the initial pH of 6.3 and 5.9 increased 130 and 53% when compared to concentration at initial pH 5.4 in the medium. The levan yield at pH 5.9 was 87.5% and at pH 6.3 was 162.5% superior in relation to that obtained at initial pH 5.4.

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Author Biographies

Marcia Sadae Tano, Universidade Estadual de Londrina

Farmacêutica-Bioquímica. Pós-graduada em Microbiologia - Departamento de Microbiologia – UEL. Departamento de Bioquímica - Universidade Estadual de Londrina, Caixa Postal 6001, Londrina - PR , CEP 86051-900, Fone: (043) 371-4270, Fax (043) 371-4216.

João Batista Buzato, Universidade Estadual de Londrina

Graduação em Farmácia Bioquímica pela Universidade Estadual de Maringá (1980) e doutorado em Biochemistry And Microbiology pela University of St Andrews (1992) . Atualmente é Professor Associado B da Universidade Estadual de Londrina e Revisor de periódico da Semina. Ciências Agrárias (Online). Tem experiência na área de Microbiologia. Atuando principalmente nos seguintes temas: Zymomonas mobilis, Fermentation, continuous culture, ethanol.

Published

2004-07-15

How to Cite

Tano, M. S., & Buzato, J. B. (2004). Influence of the initial ph of sugar cane juice on the production of levan by Zymomonas mobilis ATCC 31821. Semina: Ciências Exatas E Tecnológicas, 23(1), 87–92. https://doi.org/10.5433/1679-0375.2002v23n1p87

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Original Article

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