Degree of Milling Effects on the Sorghum (Sorghum bicolor) Flours, Physicochemical Properties and Kinetics of Starch Digestion

Authors: Brou K., Guéhi T., Konan A. G., Gbakayoro J. B., Gnakri D.

Abstract:

Two types of crushing were applied to grains of red sorghum: manual crushing using a mortar and pestle of kitchen and mechanical crushing using a hammer mill. The flours obtained at the end of these various crushing were filtered and subdivided in different fractions according to the diameters of the mesh of the sieves (0.16mm; 0.25mm; 0.315mm; 0.4mm, and 0.63mm…). Some physical, chemical and nutritional traits of these flours were evaluated using Association of Official Analytical Chemists (AOAC). In vitro digestibility of these flours was also studied with freezing of flour 1% like substrate and α-amylase from B. licheniformis (E.C.3.2.1.1; Megazyme, Wicklow, Ireland). The results revealed that the batches of flours which have the finest diameters as 0.16mm; 0.25mm are the richest one in nutrients and are also the most digestible. Also mechanical crushing is the best mean to obtain significant amount of flours. In conclusion, the type of crushing and the size of the particles have an impact on the final concentration of some nutrients of the flours obtained. Indeed, the finest particles (0.16mm – 0.25mm 0.315mm) obtained after sifting of the flours are more nutritive and have a better digestibility than others size. So the finest particles could be advised for management of cereals namely the sorghum for the production of the infantile foods.

Keywords: Nutrients, digestibility, crush, flour, milling, granulometry.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1336044

References:

[1] FAO. Nutrition in the developing countries. Macronutriments: Glucids, Lipids and Proteins. pp99-118, 1996
[2] S. Guillaume, B. Novales, M.F. Devaux and J. Abecassis. Characterization of granular products: The contribution of the analysis of image for the grinding of corn. In: Processes of crushing, recent progress in genius of the processes, 45: pp81-86, 1996
[3] J. Morancho. Production and marketing of durum wheat in the world. Commercial Gallo, Mientamer 239,08012 Barcelona, Spain pp29-33. 1995
[4] F. Aboua, J. Nemlin, A. Kossa and A. Kamenan. Traditional transformation of some cereals cultivated into Ivory Coast. Cereals in hot areas. AUPELF - UREF, Eds John Lybbey Eurotext Paris, Vol. 223-229, 1989.
[5] K.G. Duodu, A. Nunes, I. Delgadillo, M.L. Parker, E.N.C. Mills, P.S. Belton and J.R.N. Taylor. Effect of grain structure and cooking on sorghum and maize in vitro protein digestibility. Journal of Cereal Science, Vol. 35: pp161–174, 2002.
[6] A. Oom, A. Pettersson, J.R.N. Taylor and M. Stading. Rheological properties of kafirin and zein prolamins. Journal of Cereal Science, Vol. 47: pp109–116, 2008.
[7] J.M. Awika, J.M. McDonough and L.W. Rooney. Decorticating sorghum to concentrate healthy phytochemicals. Journal of Agricultural and Food Chemistry, Vol. 53: pp6230–6234, 2005.
[8] L.W. Rooney and J.M. Awika. Overview of products and health benefits of speciality sorghums. Cereal Foods World, Vol. 50: pp114–115, 2005.
[9] S.J. Choi, H.D. Woo, S.H. Ko and T.W. Moon. Confocal laser scanning microscopy to investigate the effect of cooking and sodium bisulfite on in vitro digestibility of waxy sorghum flour. Cereal Chemistry, Vol. 85: pp 65–69, 2008.
[10] K. Mahasukhonthachat, P.A. Sopade and M.J. Gidley. Kinetics of starch digestion in sorghum as affected by particule size; Journal of Food Engineering, Vol. 96: pp18 – 28, 2010.
[11] W.R. Morrison and R.F. Tester. Properties of damaged starch granules. IV. Composition of ball milled wheat starches and of fractions obtained on hydration. Journal of Cereal Science, Vol. 20, pp69–77, 1994.
[12] W.R. Morrison, R.F. Tester and M.J. Gidley. Properties of damaged starch granules. II. Crystallinity, molecular order and gelatinisation of ball-milled starches. Journal of Cereal Science, Vol. 19, pp209–217, 1994.
[13] R.F. Tester and W.R. Morrison. Properties of damaged starch granules. V. Composition and swelling of fractions of wheat starch in water at various temperatures. Journal of Cereal Science, Vol. 20, pp175–181, 1994.
[14] R.F. Tester, W.R. Morrison, M.J. Gidley, M. Kirkland and J. Karkalas. Properties of damaged starch granules. III. Microscopy and particle size analysis of undamaged granules and remnants. Journal of Cereal Science, Vol. 20, pp 59–67, 1994.
[15] W.L. Kerr, C.D.W. Ward, K.H. McWatters and V.A. Resurreccion. Effect of milling and particle size on functionality and physicochemical properties of cowpea flour. Cereal Chemistry, Vol. 77, pp213–219, 2000.
[16] Z.Q. Huang, X.I. Xie, Y. Chen, J.P. Lu and Z.F. Tong. Ball-milling treatment effect on physicochemical properties and features for cassava and maize starches. Comptes Rendus Chimie, Vol. 11, pp73–79, 2008.
[17] AOAC. Official Method off Analysis (15th ED). Washington DC Association off Official Analytical Chemists, 1990.
[18] M. Dubois, A. Gilles, J.J. Hamilton, P.A. Rebers and F. Smith. Colorimetric method for determination off sugars and related substances. Anal. Chem. Vol. 28, pp350 – 356, 1956.
[19] P. Bernfeld. Amylase α and β. Method in enzymology i.s.p. colowich and N.O. Kaplan, 9th ED, Academic Inc., New York: 154 p, 1955.
[20] G. Bertrand, P. Thomas. Guide for handling of chemistry biology. Paris Dunod and Pinat, 468p, 1910.
[21] AACC International. Approved methods of the American Association of Cereal Chemists (10th ed.). St. Paul, MN, 2000.
[22] P.A. Sopade and M.J. Gidley. A rapid in-vitro digestibility assay based on glucometry for investigating kinetics of starch digestion. Starch/Stärke,Vol. 61, pp245–255, 2009.
[23] J.P. Melcion. The granulometry of food: principle, measurement and obtaining. INRA Livestock productions, Vol. 13, pp81 – 97, 2000.
[24] B. Carré. Livestock productions: Effect of the size of the food particles on the digestive processes in the birds of breeding. Livestock INRA Production, Vol. 13, pp131-136, 2000.
[25] J.C. Favier. Valeur nutritive et comportement des céréales au cours de leurs transformations. Céréales en régions chaudes. AUPELF-UREF, Eds John Libbey Eurotext, Paris. pp285 – 297, 1989.
[26] A. Garcia-Alonso, I. Goni and F. Will know-Calixto. Resisting starch formation and potential glycemic index off raw and cooked vegetables (Lentils chickpeas and beans) Z Benson Unters Forsch A, Vol. 206, pp284 – 287, 1996.
[27] Godon, B. (1978). Mineral matter of the corn grain and the flour. Bull. Former students EC. France Flour-milling, 283: January-February, 33-46. 1978
[28] E. Sarikaya, T. Higasa, M. Adachi and B. Mikami. Comparison of degradation abilities of α- and β-amylases on raw starch granules. Process Biochemistry, Vol. 35, pp711–715, 2000.
[29] M. Benmoussa, B. Suhendra, A. Aboubacar and B.R. Hamaker. Distinctive sorghum starch granule morphologies appear to improve raw starch digestibility. Starch/Stärke, Vol. 58, pp92–99, 2006.
[30] R.F. Tester, X. Qi and J. Karkalas. Hydrolysis of native starches with amylases. Animal Feed Science and Technology, Vol. 130, pp39–54, 2006.
[31] T. Noda, S. Takigawa, C. Matsuura-Endo, T. Suzuki, N. Hashimoto, N.S. Kottearachchi, H. Yamauchi and I.S.M. Zaidul. Factors affecting the digestibility of raw and gelatinized potato starches. Food Chemistry, Vol. 110, pp465–470, 2008.
[32] F.C. Vieira and S.B.S. Sarmento. Heat-moisture treatment and enzymatic digestibility of Peruvian carrot, sweet potato and ginger starches. Starch/ Stärke, Vol. 60, pp223–232, 2008.
[33] D. Saving. Granulometry of the rations and nutrition of the ruminants. Livestock INRA Production, pp 99-108, 2000.
[34] M. Picar, C. Fur, J.P. Melcion and B.C. Mussel. Granulometric characterization of food: the point of view and touch of the poultries. INRA Livestock productions. pp117-130, 2000.
[35] B. Carré, J.P. Melcion, J.L. Widiez and P. Biot. Effects off various processes off fractionation, grinding and storage off peas one the digestibility off pea starch in chickens. Anim. Feed Sci. Technol., Vol. 71, pp19-33, 1998.
[36] D. Sauvant. Livestock productions: Granulometry of the rations and nutrition of the ruminant. INRA Production Animal, Vol. 13, pp99-108, 2000.
[37] F. Lebas. Granulometry of food made up and digestive operation of rabbit. INRA Livestock production, pp109-116, 2000.
[38] D. Guillou, E. Landeau. Granulometry and porcine nutrition. Livestock INRA Production. pp. 137-145, 2000.