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  • Bacterial Cellulose Product...
    Lima, H. L. S.; Nascimento, E. S.; Andrade, F. K.; Brígida, A. I. S.; Borges, M. F.; Cassales, A. R.; Muniz, C. R.; Souza Filho, M. de S. M.; Morais, J. P. S.; Rosa, M. de F.

    Brazilian Journal of Chemical Engineering/Brazilian journal of chemical engineering, 07/2017, Letnik: 34, Številka: 3
    Journal Article

    ABSTRACT In this study, we have optimized production of bacterial cellulose (BC) by Komagataeibacter hansenii ATCC 23769 in a static cultivation using sisal juice, an agroindustrial residue, as substrate. Optimization of fermentation parameters has been carried out using the one-variable-at-a-time method. Effect of initial sugar concentration, pH, nitrogen supplement, and cultivation time was evaluated. The influence of nitrogen source and quantity for bacterial cellulose production was studied using a central composite rotational design (CCRD).The highest production of BC (3.38 g/L) was obtained after 10 days of cultivation, using sisal juice (pH 5) at 15 g/L of sugars and supplemented with 7.5 g/L of extract yeast. The cellulose production yield in selected sisal culture conditions was three times higher than the yield in synthetic medium, indicating that sisal juice is a suitable substrate for BC production.