Abstract
The feasibility of using coproducts from dry grind corn ethanol production as a substrate for the production of soluble fiber was examined. Acid- and base-catalyzed hydrolysis experiments were performed using sulfuric acid and sodium hydroxide to partially hydrolyze hemicellulose content of whole stillage, a precursor to distillers' grains, to soluble fiber. The influences of temperature, reaction time, and hydrolyzing agent concentration on the formation of soluble fiber were studied. Soluble fiber was recovered by precipitation in a 95% ethanol solution. Results indicate that appreciable quantities of soluble fiber may be extracted using either acid- or base-catalyzed reactions. The highest yield of soluble fibers was 13.2 g per 100 g-db of treated whole stillage using one weight percent sodium hydroxide at 80ºC for 1 h. HPLC analysis was used to quantify the amount of monomeric sugars which were formed during the hydrolysis procedures.
Similar content being viewed by others
References
Renewable Fuels Association. (2011). 2011 Ethanol Industry Outlook. http://www.ethanolrfa.org/page/-/2011%20RFA%20Ethanol%20Industry%20Outlook.pdf?nocdn=1. Accessed 2 August 2011.
Jacobsen, S. E., & Wyman, C. E. (2000). Cellulose and hemicellulose hydrolysis models for application to current and novel pretreatment processes. Applied Biochemistry and Biotechnology, 84–86, 81–96.
Alberseim, P., Darvill, A., Roberts, K., Sederoff, R., & Staehelin, A. (2011). Plant cell walls. New York: Garland Science.
DeVries, J. W. (2003). On defining dietary fiber. Proceedings of the Nutrition Society, 62, 37–43.
Doner, L. W., & Hicks, K. B. (1997). Isolation of hemicellulose from corn fiber by alkaline hydrogen peroxide extraction. Cereal Chemistry, 74, 176–181.
Oh, Y. N., & Grundleger, M. L. (1990). Improvement in soluble fiber content of wheat fiber through enzymatic modification. Journal of Agricultural and Food Chemistry, 38, 1142–1145.
Aoe, S., Oda, T., Tatsumi, K., Yamauchi, M., & Ayano, Y. (1998). Extraction of soluble fiber from defatted rice bran. Cereal Chemistry, 70, 423–425.
Whistler, R. L. (1993). In R. L. Whistler & J. N. BeMiller (Eds.), Industrial gums: hemicelluloses (pp. 295–308). New York: Academic Press.
Wolf, M. J., MacMasters, M. M., Cannon, J. A., Rosewell, E. C., & Rist, C. E. (1953). Preparation and some properties of hemicellulose from corn hulls. Cereal Chemistry, 30, 451–470.
Yadav, M. P., Johnston, D. B., Hotchkiss, A. T., Jr., & Hicks, K. B. (2007). Corn fiber gum: a potential gum arabic replacer for beverage flavor emulsification. Food Hydrocolloids, 21, 1022–1030.
Yapo, B. M., Robert, C., Etienne, I., Wathelet, B., & Paquot, M. (2005). Effect of extraction conditions on the yield, purity and surface properties of sugar beet pulp pectin extracts. Food Chemistry, 100, 1356–1364.
Rouse, A. H., & Crandall, P. G. (1978). Pectin content of lime and lemon peel as extracted by nitric acid. Journal of Food Science, 43, 72–73.
Renard, C. M. G., Lemeunier, C., & Thibault, J. F. (1995). Alkaline extraction of xyloglucan from depectinised apple pomace: optimisation and characterisation. Carbohydrate Polymers, 28, 209–216.
Noureddini, H., Byun, J., & Yu, T. J. (2009). Stagewise dilute-acid pretreatment and enzyme hydrolysis of distillers' grains and corn fiber. Applied Biochemistry and Biotechnology, 159, 553–567.
National Renewable Energy Laboratory. (2011). Standard Biomass Analytical Procedures. http://www.nrel.gov/biomass/analytical_procedures.html. Accessed 15 January 2011.
Sluiter, A., Hames, B., Hyman, D., Payne, C., Ruiz R., Scarlata, C., et al. (2008). In NREL laboratory analytical procedure. Determination of total solids in biomass and total dissolved solids in liquid process samples. http://www.nrel.gov/biomass/pdfs/42621.pdf. Accessed 15 January 2011.
Sluiter, A. (2005). In NREL laboratory analytical procedure. Determination of starch in solids biomass samples by HPLC. http://www.nrel.gov/biomass/pdfs/9360.pdf. Accessed 27 December 2007.
Sluiter, A., Hames, B., Ruiz R., Scarlata, C., Sluiter, J., Templeton, D., et al. (2008). In NREL laboratory analytical procedure. Determination of structural carbohydrates and lignin in biomass. http://www.nrel.gov/biomass/pdfs/42618.pdf. Accessed 15 January 2011.
Hames, B., Scarlata, C., & Sluiter, A. (2008). In NREL laboratory analytical procedure. Determination of protein content in biomass. http://www.nrel.gov/biomass/pdfs/42625.pdf. Accessed 15 January 2011.
Sluiter, A., Hames, B., Ruiz, R., Scarlata, C., Sluiter, J., & Templeton, D. (2005). In NREL laboratory analytical procedure. Determination of ash in biomass. http://www.nrel.gov/biomass/pdfs/42622.pdf. Accessed 15 January 2011.
Sluiter, A., Ruiz, R., Scarlata, C., Sluiter, J., & Templeton, D. (2005). In NREL laboratory analytical procedure. Determination of extractives in biomass. http://www.nrel.gov/biomass/pdfs/42619.pdf. Accessed 15 January 2011.
AOAC Method 991.43, Total, Insoluble and Soluble Dietary Fiber in Food—Enzymatic-Gravimetric Method, MES-TRIS Buffer. Official Methods of Analysis, 16th ed. AOAC International, Gaithersburg, MD, 1995.
Ruiz, R., & Ehrman, T. (1996). In NREL laboratory analytical procedure. HPLC analysis of liquid fractions of process samples for monomeric sugars and cellobiose. http://www.nrel.gov/biomass/pdfs/4696.pdf. Accessed 27 December 2007.
Ku, Y., Jansen, O., Oles, C. J., Lazzr, E. Z., & Rader, J. I. (2003). Precipitation of inulins and oligoglucoses by ethanol and other solvents. Food Chemistry, 81, 125–132.
Ohkuma, K., Matsuda, I., Katta, Y., & Tsuji, K. (2000). New method for determining total dietary fiber by liquid chromatography. JAOAC International, 83, 1013–1019.
Das, K., Sahoo, P., Sai Baba, M., Murali, N., & Swaminathan, P. (2011). Kinetic studies on saponification of ethyl acetate using an innovative conductivity-monitoring instrument with a pulsating sensor. International Journal of Chemical Kinetics, 43, 648–656.
Noureddini, H., & Byun, J. (2010). Dilute-acid pretreatment of distillers' grain and corn fiber. Bioresource Technology, 101, 1060–1067.
Ellis, A. V., & Wilson, M. A. (2002). Carbon exchange in hot alkaline degradation of glucose. Journal of Organic Chemistry, 67, 8469–8474.
Yang, B. Y., & Montgomery, R. (1996). Alkaline degredation of glucose: effect of initial concentration of reactants. Carbohydrate Research, 280, 27–45.
Forsskahl, I., Popoff, T., & Theander, O. (1976). Reactions of d-xylose and d-glucose in alkaline aqueous solutions. Carbohydrate Research, 48, 13–21.
Acknowledgements
The authors express their gratitude to the Nebraska Ethanol Board for their support of this work.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Flodman, H.R., Boyer, E.J., Muthukumarappan, A. et al. Extraction of Soluble Fiber from Distillers' Grains. Appl Biochem Biotechnol 166, 1070–1081 (2012). https://doi.org/10.1007/s12010-011-9495-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12010-011-9495-5