FNS  Vol.2 No.2 , April 2011
Controlled Drying Effect on the Quality of Sorghum Malts Used for the Chakpalo Production in Benin
Abstract: Traditionally, sorghum malts used for the chakpalo production are dried under the sun in not controlled conditions in Benin. In order to improve drying operation in a rural approach, a shell drier was tested and the quality of the dried malts was evaluated. The germinated capacity, thousand kernel weight, moisture, protein and fat contents of the red sorghum used for malting were respectively 94 %, 27.81 %, 11.65 %, 11.4 % and 3.57 %. The quality of the dried malt in the shell drier and those of the dried malt directly under the sun was compared. The results showed that the speed of malt drying was higher in the shell drier than under the sun. Indeed, the moisture contents of the dried malts directly under the sun and in the shell drier after 12 hours were respectively 12.56 % and 7.66 %. The microbiological quality of the dried malts in the shell drier was better. There were free of faecal coliforms.The results of this study indicate that the controlled drying of sorghum malts by using a shell drier improved the drying speed and the microbiological characteristics of the dried malts. Shell drier would be easy to use in the rural areas to dry sorghum malt.
Cite this paper: nullV. Ballogou, J. Dossou and C. de Souza, "Controlled Drying Effect on the Quality of Sorghum Malts Used for the Chakpalo Production in Benin," Food and Nutrition Sciences, Vol. 2 No. 2, 2011, pp. 156-161. doi: 10.4236/fns.2011.22022.

[1]   R. C. Agu and G. H. Palmer, “Enzymic Breakdown of Endosperm Proteins of Sorghum at Different Malting Temperatures,” Journal of the Institute of Brewing, Vol. 102, No. 6, 1996, pp. 415-418.

[2]   FAO, United Nations Food and Agriculture Organization, “Le sorgho et les mils dans la nutrition humaine,” Rome, 1995, p. 198.

[3]   L. Novellie and P. de Schaepdrijver, “Microorganisms in the Production of Food,” In: M. R. Adam, ed., Progress in Industrial Microbiology, Elsevier, Amsterdam, 1986, p. 73.

[4]   J. S. Hough, D. E. Briggs and R. Stevens, “Malting and Brewing Science,” Chapman and Hall, London, 1971, p. 104.

[5]   T. Beta, L. W. Rooney and R. D. Waniska, “Malting Characteristics of Sorghum Cultivars,” Cereal Chemistry, Vol. 72, No. 6, 1995, pp. 533-538.

[6]   V. Subramanian, N. S. Rao, R. Jambunathan, D. S. Murty and B. V. S. Reddy, “The Effect of Malting on the Extractability of Proteins and Its Relationship to Diastatic Activity in Sorghum,” Journal of Cereal Science, Vol. 21, No. 3, 1995, pp. 283-289. doi:10.1006/jcrs.1995.0031

[7]   M. A. Igyor, A. C. Ogbonna and G. H. Palmer, “Effect of Malting Temperature and Mashing Methods on Sorghum Wort Composition and Beer Flavour,” Process Biochemistry, Vol. 36, No. 11, 2001, pp. 1039-1044. doi:10.1016/S0032-9592(00)00267-3

[8]   C. I. Owuama and I. Asheno, “Studies on Malting Conditions for Sorghum,” Food Chemistry, Vol. 49, No. 3, 1994, pp. 257-260. doi:10.1016/0308-8146(94)90169-4

[9]   F. G. Priest and L. Campbell, “Brewing Microbiology,” 2nd Edition, Chapman and Hall, London, 1996, pp. 114-119.

[10]   V. Ballogou, “Production de céréales maltées prêtes à l’emploi pour la fabrication de boissons locales,” Mémoire de ma?trise, Université d’Abomey-Calavi (Bénin); Faculté des Sciences et Techniques (FAST), 2005, p. 70.

[11]   P. P. A. Kayodé, A. Adegbidi, D. J. Hounhouigan, A. R. Linnemann and R. J. M. Nout, “Quality of Farmers Varie- Ties of Sorghum and Derived Foods as Perceived by Consumers in Benin,” Ecology of Food and Nutrition, Vol. 44, No. 4, 2000, pp. 271-294.

[12]   L. Michodjehoun-Mestres, D. J. Hounhouigan, J. Dossou and C. Mestres, “Physical, Chemical and Microbiological Changes during Natural Fermentation of Gowé, a Sprouted or Non-Sprouted Sorghum Beverage from West-Africa,” African Journal of Biotechnology, Vol. 4, No. 6, 2005, pp. 487-496.

[13]   G. Vieira-Dalodé, L. Jespersen, D. J. Hounhouigan, P. L. Moller, C. M. Nago and M. Jakobsen, “Lactic Acid Bacteria and Yeasts Associated with Gowé Production from Sorghum in Bénin,” Journal of Applied Microbiology, Vol. 103, No. 2, 2007, pp. 1364-5072.

[14]   GERES, “Appui à la filière séchage des aliments,” Séchoirs familiaux et artisanaux pour la zone sahélienne, Marseille, 1993, p. 13.

[15]   M. Fournier and A. Guinebault, “The ‘shell’ Dryer- Modeling and Experimentation,” Renewable Energy, Vol. 6, No. 4, 1995, pp. 459-463. doi:10.1016/0960-1481(94)E0015-W

[16]   A. Fudholi, K. Sopian, M. H. Ruslan, M. A. Alghoul and M. Y. Sulaiman, “Review of Solar Dryers for Agricultural and Marine Products,” Renewable and Sustainable Energy Reviews, Vol. 14, No. 1, 2010, pp. 1-30. doi:10.1016/j.rser.2009.07.032

[17]   Association of Official Analytical Chemists (AOAC) “Official Methods of Analysis,” 13th Edition, Washington, D.C., 1984.

[18]   D. E. Briggs, C. A. Boulton, P. A. Brookes and R. Steven, “Native African Beers,” Brewing Science and Pratice, Boca Raton, Cambridge: CRC Press Woodhead Pub- lishing Ltd, 2004, pp. 589-605.

[19]   S. Serna-salvidar and L. W. Rooney, “Structure and Chemistry of Sorghum and Millets,” In: D. A. V. Dendy, Ed, Sorghum and Millets: Chemistry and technology, American Association of Cereal Chemists, Minnesota; USA, 1995, p. 406.

[20]   Codex Stan, Norme codex pour le sorgho en grains, 1989.

[21]   L. Mugode, “Free Amino Nitrogen Improvement in Sor- Ghum Malt Brewing,” Food Science and Technology, University of Pretoria, South Africa, 2007, p. 100.

[22]   R. C. Agu and G. H. Plamer, “Development of Micro- Organisms during the Malting Sorghum,” Journal of the Insttitute of Brewing, Vol. 105, 1999, pp. 101-106.

[23]   L. W. Whitlow and W. M. Hagler Jr., “Mycotoxins in Feeds,” Feedstuffs, Vol. 74, No. 28, 2002, pp. 1-10.

[24]   L. M. Bal, S. Satya and S. N. Naik, “Solar Dryer with Thermal Energy Storage Systems for Drying Agricultural Food Products: A Review,” Renewable and Sustainable Energy Reviews, Vol. 14, No. 8, 2010, pp. 2298-2314. doi:10.1016/j.rser.2010.04.014

[25]   M. L. Lefyedi, “Control of Microbial Proliferation on Sorghum during Malting,” Food Science, University of Pretoria, 2007, p. 118.

[26]   M. O. Ilori, B. Fessehatzion, O. Olajuyigbe, G. O. Baba- lola and J. O. Ogundiwin, “Effect of Malting and Brewing Processes on the Microorganisms Associated with Sor Ghum Grains and Malt,” Master Brewers Association of the Americas Quarterly, Vol. 28, 1991, pp. 45-49.

[27]   M. L. Thaoge, M. R. Adams, M. M. Sibara, T. G. Watson, J. R. N. Taylor and E. M. Goyvaerts, “Production of Im- Proved Infant Porridges from Pearl Millet Using a Lactic Acid Fermentation Step and Addition of Sorghum Malt to Reduce Viscosity of Porridges with High Protein, Energy and Solids (30%) Content,” World Journal of Microbiology and Biotechnology, Vol. 19, 2003, pp. 305-310. doi:10.1023/A:1023614526667

[28]   M. J. Pelczar, C. S. Chane and R. K. Noel, “Microbiology,” 5th Edition, McGraw-Hill Publishing Company, New Delhi, 1993, p. 272.

[29]   L. S. Alice, “Microbiology and Pathology,” 11th Edition, C. V. Mosby Company, 1976, pp. 202-203.

[30]   C. M. Bourgeois, J. F. Mescle and J. Zucca, “Microbi- ologieAlimentaire: Aspect Microbiologique de la Sécurité et de la Qualité des Aliments,” Collection Sciences et Technique Agroalimentaire, Technique et Documentation. Londre, Paris, 1996.