Effects of initial pH on biological synthesis of xylitol using xylose-rich hydrolysate
Tóm tắt
Sugarcane bagasse, an agricultural residue plentiful in Brazil, was utilized for xylitol production by a biotechnological process. Am edium fermentation prepared with this xylose-rich biomass at an oxygen transfer volmetric coefficient of 10/h1 and different initial pH value was inoculated with cells of Candida guilliermondii FTI 20037. The maximum values of xylitol and cell volumetric productivities (Q
p=0.56 g/[L·h] and Q
p=0.11 g/[g·h]), xylitol yield factor (Y
p/s=0.79 g/g), and xylose uptake rate (qs=0.197 g/[g·h]) wereattained atp H 7.0 without further pH control. The results show that the yeast performance was influeced by the pH, an im portant bioengineering prameter in this fermentation process.
Tài liệu tham khảo
Kern, M., Nidetzky, B., Kulbe, K. D., and Haltrich, D. (1998), J. Ferment. Bioeng. 85, 196–202.
Perego, P., Converti, A., Palazzi, E., Del Borghi, M., and Ferraiolo, G. (1990), J. Ind. Microbiol. 6, 157–164.
Silva, S. S., Ribeiro, J. D., Felipe, M. G. A., and Vitolo, M. (1997), Appl. Biochem. Biotech. 63–65, 557–564.
Emodi, A. (1978), Food Technol. 32, 20–32.
Pepper, T. and Ollinger, P. M. (1988), Food Technol. 42, 98–106
Forester, M. (1988), US patent 4,762,719.
Makinen, K. K. (1976), The Futurist, June, 135–139.
Heikkilä, H., Nurmi, J., Rahkila, L., and Töyrylä, M. (1992), US patent 5,081,026.
Carvalho, L. C. C. (1998), Canário Sucroalcooleiro 6–7.
Burgi, R. (1988), A Granja 44 (484), 16–26.
Olsson, L. and Hahn-Hägerdal, B. (1996), Enzyme Microb. Technol. 18, 312–331.
Frazer, F. R. and McCaskey, T. A. (1989), Biomass 18, 31–42.
Buchert, J., Niemelä, K., Puls, J., and Poutanen, K. (1990), Process Biochem. 25, 176–180.
Tran, A. V. and Chambers, R. P. (1986), Enzyme Microl. Technol. 8, 439–445.
van Zyl, C., Prior, B. A., and du Preez, J. V. (1988), Appl. Biochem. Biotech. 17, 357–369.
Yu, S., Wayman, M., and Parekh, S. K. (1987), Biotechnol. Bioeng. 29, 1144–1150.
Roberto, I. C., Lacis, L. S., Barbosa, M. F. S., and Mancilha, I. M. (1991), Process Biochem. 26, 15–21.
Ramos, R. M. (1998), MS thesis, Universidade Federal de Viçosa, Viçosa, MG. Brazil.
Sene, L., Felipe, M. G. A., Vitolo, M., Silva, S. S. and Mancilha, I. M. (1998), J. Basic. Microbiol. 38 (1), 61–69.
du Preez, J. C. (1994), Enzyme Microb. Technol. 16, 944–956.
Roberto, J. C., Mancilha, I. M., Souza, C. M. A., Felipe, M. G. A., Sato, S., and Castro, H. F. (1994), Biotechnol. Lett. 16, 1211–1216.
Roberto, I. C., Lacis, L. S., Barbosa, M. S., and Mancilha, I. M. (1991). Process Biochem. 16, 15–21.
Perego, P., Converti, A., Palazzi, E., Del Borghi, M., and Ferraiolo, G. (1990), J. Ind. Microbiol. 6, 157–164.
Alves, L. A. (1998), MS thesis, Faculdade de Engenharia Química de Lorena, Lorena, SP, Brazil.
Gíro, F. M., Pelica, F., and Amaral-Collaço, M. T. (1996), Appl. Biochem. Biotechnol. 56, 79–87.
Felipe, M. G. A., Vitolo, M., Mancilha, I. M., and Silva, S. S. (1997), Biomass Bioenergy 13(1/2), 11–14.
Parajó, J. C., Domínguez, H., and Domínguez J. M. (1996), Bioresource Technol. 57, 179–195.
Felipe, M. G. A., Alves, L. A., Roberto, I. C., Mancilha, I. M., and Almeida e Silva, J. B. (1996), Bioresource Technol. 56, 281–283.
Ferrari, M. D., Neirotti, E., Albornoz, C., and Saucedo, E. (1992), Biotechnol. Bioeng. 40, 753–759.
Pirt, S. J. (1975), Principles of Microbe and Cell Cultivation, Blackwell Scientific, Oxford, England
Roberto, I. C., Silva, S. S., Felipe, M. G. A., Mancilha, I. M., and Sato, S. (1996). Appl. Biochem. Biotechnol. 57/58, 339–347.
Lee, Y. Y. and McCaskey, T. A. (1983), Tappi J. 66, 102–107.
Windholz, M. (1983), The Merck Index: An Encyclopedia of Chemicals, Drugs and Biologicals Merck, Rahway, NJ.
Voguel, A. (1971), Analise Organica Qualitativa, vol. 3, Livro Técnico S. A., Rio deJaneiro
Roberto, I. C., Felipe, M. G. A., Mancilha, I. M., Vitolo, M., Sato, S., and Silva, S. S. (1995), Bioresource Technol. 51, 255–257.
Weitzel, G., Pilatus, U., and Rensing, I. (1987), Exp. Cell. Res. 170, 64–79.
Horitsu, H., Yahashi, Y., Takamizawa, K., Kawai, K., Suzuki, T., and Watanabe, N. (1992) Biotechnol. Bioeng. 40, 1085–1091.
Silva, S. S., Mancilha, I. M., Queiroz, I. M., Felipe, M. G. A., Roberto, I. C., and Vitolo, M. (1994), J. Basic Microb. 34, 205–208.
Rosa, S. M. A., Felipe, M. G. A., Silva, S. S., and Vitolo, M. (1998), Appl. Biochem. Biotechnol. 70–72, 127–135.
Parajó, J. C., Domínguez, H., and Domínguez, J. M. (1997), Enzme Microbiol. Technol. 21, 18–24.