Abstract
The inhibitory action of acetic acid, ferulic acid, and syringaldehyde on metabolism of Candida guilliermondii yeast during xylose to xylitol bioconversion was evaluated. Assays were performed in buffered and nonbuffered semidefined medium containing xylose as main sugar (80.0 g/l), supplemented or not with acetic acid (0.8–2.6 g/l), ferulic acid (0.2–0.6 g/l), and/or syringaldehyde (0.3–0.8 g/l), according to a 23 full factorial design. Since only individual effects of the variables were observed, assays were performed in a next step in semidefined medium containing different concentrations of each toxic compound individually, for better understanding of their maximum concentration that can be present in the fermentation medium without affecting yeast metabolism. It was concluded that acetic acid, ferulic acid, and syringaldehyde are compounds that may affect Candida guilliermondii metabolism (mainly cell growth) during bioconversion of xylose to xylitol. Such results are of interest and reveal that complete removal of toxic compounds from the fermentation medium is not necessary to obtain efficient conversion of xylose to xylitol by Candida guilliermondii. Fermentation in buffered medium was also considered as an alternative to overcome the inhibition caused by these toxic compounds, mainly by acetic acid.
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References
Cortez DV, Roberto IC (2010) Individual and interaction effects of vanillin and syringaldehyde on the xylitol formation by Candida guilliermondii. Bioresour Technol 101:1858–1865
Delgenes JP, Moletta R, Navarro JM (1996) Effects of lignocellulose degradation products on ethanol fermentations of glucose and xylose by Saccharomyces cerevisiae, Zymomonas mobilis, Pichia stipitis and Candida shehatae. Enzyme Microb Technol 19:220–225
Duarte LC, Carvalheiro F, Neves I, Girio FM (2005) Effects of aliphatic acids, furfural, and phenolic compounds on Debaryomyces hansenii CCMI 941. Appl Biochem Biotechnol 121:413–425
Faria LFF, Gimenes MAP, Nobrega R, Pereira N Jr (2002) Influence of oxygen availability on cell growth and xylitol production by Candida guilliermondii. Appl Biochem Biotechnol 98–100:449–458
Helle S, Cameron D, Lam J, White B, Duff S (2003) Effect of inhibitory compounds found in biomass hydrolysates on growth and xylose fermentation by a genetically engineered strain of S. cerevisiae. Enzyme Microb Technol 33:786–792
Larsson S, Quintana-Sáinz A, Reimann A, Nilvebrant N-O, Jönsson LJ (2000) Influence of lignocellulose-derived aromatic compounds on oxygen-limited growth and ethanolic fermentation by Saccharomyces cerevisiae. Appl Biochem Biotechnol 84–86:617–632
Lawford HG, Rousseau JD (1998) Improving fermentation performance of recombinant Zymomonas in acetic acid-containing media. Appl Biochem Biotechnol 70–72:161–172
Luo C, Brink DL, Blanch HW (2002) Identification of potential fermentation inhibitors in conversion of hybrid poplar hydrolyzate to ethanol. Biomass Bioenergy 22:125–138
Martín C, Galbe M, Nilvebrant N-O, Jönsson LJ (2002) Comparison of the fermentability of enzymatic hydrolyzates of sugarcane bagasse pretreated by steam explosion using different impregnating agents. Appl Biochem Biotechnol 98–100:699–716
Mussatto SI, Roberto IC (2002) Xylitol: a sweetener with benefits for human health. Braz J Pharm Sci 38:401–413
Mussatto SI, Roberto IC (2004) Alternatives for detoxification of diluted acid lignocellulosic hydrolyzates for use in fermentative processes: a review. Bioresour Technol 93:1–10
Mussatto SI, Roberto IC (2005) Evaluation of nutrient supplementation to charcoal-treated and untreated rice straw hydrolysate for xylitol production by Candida guilliermondii. Braz Arch Biol Technol 48:497–502
Palmqvist E, Grage H, Meinander NQ, Hahn-Hägerdal B (1999) Main and interaction effects of acetic acid, furfural, and p-hydroxybenzoic acid on growth and ethanol productivity of yeasts. Biotechnol Bioeng 63:46–55
Parajó JC, Domínguez H, Domínguez JM (1998) Biotechnological production of xylitol. Part 3: operation in culture media made from lignocellulose hydrolysates. Bioresour Technol 66:25–40
Roberto IC, Sato S, Mancilha IM, Taqueda MES (1995) Influence of media composition on xylitol fermentation by Candida guilliermondii using response surface methodology. Biotechnol Lett 17:1223–1228
Silva DDV, Felipe MGA, Manchilha IM, Luchese RH, Silva SS (2004) Inhibitory effect of acetic acid on bioconversion of xylose in xylitol by Candida guilliermondii in sugarcane bagasse hydrolysate. Braz J Microbiol 35:248–254
Vogel HC, Todaro CL (1997) Fermentation and biochemical engineering handbook, 2nd edn. Noyes, New Jersey
Zaldivar J, Ingram LO (1999) Effect of organic acids on the growth and fermentation of ethanologenic Escherichia coli LY01. Biotechnol Bioeng 66:203–210
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Financial support from Capes, Fapesp, and CNPq (Brazil) is gratefully acknowledged.
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This article is part of the BioMicroWorld 2009 Special Issue.
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Pereira, R.S., Mussatto, S.I. & Roberto, I.C. Inhibitory action of toxic compounds present in lignocellulosic hydrolysates on xylose to xylitol bioconversion by Candida guilliermondii . J Ind Microbiol Biotechnol 38, 71–78 (2011). https://doi.org/10.1007/s10295-010-0830-6
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DOI: https://doi.org/10.1007/s10295-010-0830-6