Proteolysis of sorghum endosperm proteins when mashing with raw grain plus exogenous protease and potassium metabisulphite

Journal of the Institute of Brewing

Volumn 114, Issue 4, 2008, Pages 343-348

  Ng'andwe, Chisala C ^a   Hall, Alan N ^a   Taylor, John R N ^a  

^a UNIVERSITY OF PRETORIA   (South Africa)

Author keywords

Endosperm protein matrix; Exogenous protease; Free amino nitrogen; Mashing; Sorghum

Indexed keywords

EID: 62549150751     PISSN: 00469750     EISSN: None     Source Type: Journal    
DOI: 10.1002/j.2050-0416.2008.tb00778.x     Document Type: Article

References (34)

1. Agu, R. C., A comparison of maize, sorghum and barley as brewing adjuncts. J. Inst. Brew. 2002, 108, 19-22.
2. Agu, R. C., Some relationships between enzyme development, extract recovery, and sugar profile in malted sorghum. Tech. Q. Master Brew. Assoc. Am., 2005, 42, 120-124.
3. Agu, R. C. and Palmer, G. H., Effect of mashing with commercial enzymes on the properties of sorghum worts. World J. Microbiol. Biotech., 1998, 14, 43-48.
4. Agu, R. C., Okenchi, M. U., Aneke, G. and Onwumelu, A. H., Short communication: Brewing properties of Nigerian white and yellow malted sorghum varieties mashed with external enzymes. World J. Microbiol. Biotech. 1995, 11, 591-592.
5. Aisien, A. O. and Muts, G. C. J., Microscale malting and brewing studies of some sorghum varieties. J. Inst. Brew., 1987, 93, 328-331.
6. Arbab, A. E. and El Tinay, A. H., Effect of cooking and treatment with sodium bisulfite or ascorbic acid on the in vitro protein digestibility of two sorghum cultivars. Food Chem., 1997, 59, 339-343.
7. Bajomo, M. F. and Young, T. W., Development of a mashing profile for the use of microbial enzymes in brewing with raw sorghum (80% and malted barley or sorghum malt (20%). J. Inst. Brew., 1992, 98, 515-523.
8. Bajomo, M. F. and Young, T. W., The properties, composition and fermentabilities of worts made from 100% raw sorghum and commercial enzymes. J. Inst. Brew., 1993, 99, 153-158.
9. Bajomo, M. F. and Young, T.W., Fermentation of worts made from 100% raw sorghum and enzymes. J. Inst. Brew., 1994, 100, 79-84.
10. Chandrashekar, A. and Kirleis, A. W., Influence of protein on starch gelatinisation in sorghum. Cereal Chem., 1988, 65, 457-462.
11. Choi, S. J., Woo, H. D., Ko, S. H. and Moon, T. W., Confocal laser scanning microscopy to investigate the effect of cooking and sodium bisulfite on in vitro digestibility of waxy sorghum flour.Cereal Chem., 2008, 85, 65-69.
12. Dale, C. J., Young, T. W. and Makinde, A., Extruded sorghum as a brewing raw material. J. Inst. Brew., 1989, 95, 157-164.
13. Dufour, J. P., Mélotte, L. and Srebrnik, S., Sorghum malts for the production of lager beer. J. Am. Soc. Brew. Chem., 1992, 50, 110-119.
14. Duodu, K. G., Taylor, J. R. N., Belton, P. S. and Hamaker, B. R. Factors affecting sorghum protein digestibility. J. Cereal Sci,. 2003, 38, 117-131.
15. El Nour, I. N. A., Peruffo, A. B. D. and Curioni, A., Characterisation of sorghum kafirins in relation to their cross-linking behaviour. J. Cereal Sci., 1998, 28, 197-207.
16. th ed., Fachverlag Hans Carl: Nürenberg, 1998.
17. Evans, D. J. and Taylor, J. R. N., Extraction and assay of proteolytic activities in sorghum malt. J. Inst. Brew., 1990, 96, 201-207.
18. Ezeogu, L. I., Duodu, K. G., Emmambux, M. N. and Taylor, J. R. N., Influence of cooking conditions on the protein matrix of sorghum and maize endosperm flours. Cereal Chem., 2008, 85, 397-402.
19. Goode, D. L., Halbert, C. and Arendt, E. K., Mashing studies with unmalted sorghum and malted barley. J. Inst. Brew., 2002, 108, 465-473.
20. Goode, D. L., Halbert, C. and Arendt, E. K., Optimisation of mashing conditions when mashing with unmalted sorghum and commercial enzymes. J. Am. Soc. Brew. Chem., 2003, 61, 69-78.
21. Hamaker, B. R., Kirleis, A. W., Butler, L. G., Axtell, J. D. and Mertz, E. T., Improving the in vitro protein digestibility of sorghum with reducing agents. Proc. Nat. Acad. Sci. USA, 1987, 84, 626-628.
22. Hamaker, B. R., Mohamed, A. A., Habben, J. E., Huang, C. P. and Larkin, B. R., Efficient procedure for extracting maize and sorghum kernel proteins reveals higher prolamin contents than the conventional method. Cereal Chem., 1995, 72, 583-588.
23. Mackintosh, I. and Higgins, B., The development of a sorghumbased lager beer in Uganda: a model of co-operation between industry and government in the development of local ingredients for the production of quality lager beer and consequential benefits for the parties involved. Aspects Appl. Biol., 2004, 72, 235-245.
24. O'Connor-Cox, E. S. C. and Ingledew, W. M., Wort nitrogenous sources - Their use by brewing yeasts: A review. J. Am. Soc. Brew. Chem., 1989, 47, 102-108.
25. Ogu, E. O., Odibo, F. J. C., Agu, R. C. and Palmer, G. H., Quality assessment of different sorghum varieties for their brewing potential. J. Inst. Brew., 2006, 11, 117-121.
26. Olatunji, O., Jibogun, A. C., Anibaba, T. S., Oliyide, V. O., Ozumba, A. U., Oniwinde, A. B. and Koleoso, O., Effect of different mashing procedures on the quality of sorghum beer. J. Am. Soc. Brew. Chem., 1993, 51, 67-70.
27. Oria, M. P., Hamaker, B. R. and Shull, J. M., Resistance of sorghum α-, β-, and γ- kafirin to pepsin digestion. J. Agric. Food Chem., 1995, 43, 2148-2153.
28. Pérez-Carrillo, E. and Serna-Salivar, S. O., Effect of protease treatment before hydrolysis with α-amylase on the rate of starch and protein hydrolysis of maize, whole sorghum, and decorticated sorghum. Cereal Chem., 2007, 84, 607-613.
29. Rom, D. L., Shull, J. M., Chandrashekar, A. and Kirleis, A. W., Effects of cooking and treatment with sodium bisulfite on in vitro protein digestibility and microstrucure of sorghum flour. Cereal Chem., 1992, 69, 178-181.
30. South African Department of Health. Foodstuffs Cosmetics and Disinfectants Act, Act 54. 1972. www.doh.gov.za (last accessed December 2008).
31. Taylor, J. R. N., Novellie, L. and Liebenberg, N. v. d. W., Sorghum protein body composition and ultrastructure. Cereal Chem., 1984, 61, 69-73.
32. Taylor, J. R. N., Novellie, L. and Liebenberg, N v. d. W., Protein body degradation in the starchy endosperm of germinating sorghum. J. Exp. Bot., 1985, 36, 1287-1295.
33. Taylor, J. R. N., Schober, T. J. and Bean, S. R., Novel food and non-food uses for sorghum and millets. J. Cereal Sci., 2006, 44, 252-271.
34. Ugboaja F. C., Bednarski, W. and Babuchowski, A., The technology and properties of beer produced from unmalted sorghum or maize grains. World J. Microbiol. Biotech., 1991, 7, 225-230.