Preservation of Millet Flour by Refrigeration: Changes in Total Protein and Amino Acids Composition During Storage
This work describes refrigeration effects during storage on total protein and amino acids composition of raw and processed flour of two pearl millet cultivars (Ashana and Dembi). The protein content of the whole raw flour was found to be 14.46 and 13.38% for Ashana and Dembi cultivars, respectively. Dehulling of the grains reduced the protein content to 13.38 and 12.67% for the cultivars, respectively. For both cultivars, the protein content of the whole and dehulled raw flour before and after cooking was slightly decreased when the flour was stored for 60 days even after refrigeration. The effect of refrigeration process in combination with the storage period, cooking or dehulling was found to be vary between amino acids and even between cultivars. Regardless of the storage period and processing method, the amino acids content was remained unchanged after refrigeration for both cultivars.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1082285Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1635
 Abdalla, A.A., El Tinay, A.H., Mohamed, B.E. and Abdalla, A.H. (1998). Proximate composition, starch, phytate and mineral contents of 10 pearl millet genotypes. Food Chemistry, 63, 243-246.
 AbdelRahaman, S. M., ElMaki, H. B., Idris, W. H., Hassan, A. H., Babiker, E. E. and El Tinay, A. H. (2007). Antinutritional factors content and hydrochloric acid extractability of minerals in pearl millet cultivars as affected by germination. International Journal of Food Sciences and Nutrition, 58, 6-17
 Klopfenstein, C.F., Leipold, H.W. and Cecil, J.E. (1991). Semiwet milling of pearl millet flour reduced goitrogenicity. Cereal Chemistry, 68, 177-179.
 Elyas, S.H., El Tinay, A.H., Yosif, N.E. and Elsheikh, E.A.. (2002). Effect of fermentation on nutritive value and in vitro protein digestibility of pearl millet. Food Chemistry, 78, 75-79.
 Ali, A.M., ElTinay, A.H. and Abdalla, A.H. (2003). Effect of fermentation on the in vitro protein digestibility of pearl millet. Food Chemistry, 80, 51-54.
 Paull, R.E. and Jung Chen, N.J. (2000). Heat treatment and fruit ripening. Postharvest Biology and Technology, 21, 21-37.
 Fallik, E. (2004). Prestorage hot water treatments (immersion, rinsing and brushing). Postharvest Biology and Technology, 32, 125-134.
 Saltveit, M.E. (2000). Wound induced changes in phenolic metabolism and tissue browning are altered by heat shock. Postharvest Biology and Technology, 21, 61-69.
 AOAC (1990). Official Methods of Analysis (15th ed.). Washington, DC: Association of Official Analytical Chemists.
 Moore, S. and Stain, W.H. (1963). Chromatographic amino acids determination by the use of automatic recording equipment methods. Enzymology, 63, 819-831.
 Snedecor, G.W. and Cochran, W.G. (1987). Statistical Methods, 17th edn. Pp. 221-222. Ames, IA: The Iowa State University Press.
 Morcuende, D., Este' vez, M., Ruiz, J. and Cava, R. (2003). Oxidative and lipolytic deterioration of different muscles from free-range reared Iberian pigs under refrigerated storage. Meat Science, 65, 1157-1164.
 Lund, M.N., Hviid, M.S., Claudi-Magnussen, C. and Skibsted, L.H. (2008). Effects of dietary soybean oil on lipid and protein oxidation in pork patties during chill storage. Meat Science, 79, 727-733.
 Ruiz-Capillas, C., Carballo, J. and Jimenez Colmenero, F. (2007). Biogenic amines in pressurized vacuum packaged cooked sliced ham under different chilled storage conditions. Meat Science, 75, 397-405.
 Rubio, B., Mart─▒nez, B., Sanchez, M.J., Cachan, M.D. J., Rovira, J. and Jaime, I. (2007). Study of the shelf life of a dry fermented sausage ÔÇÿÔÇÿsalchichon-- made from raw material enriched in monounsaturated and polyunsaturated fatty acids and stored under modified atmospheres. Meat Science, 76, 128-137.
 Aisha, S.M. F., Babiker, E. E. and El Tinay A. H. (2004). Effect of malt pretreatment and/or cooking on phytate and essential amino acids contents and in vitro protein digestibility of corn flour. Food Chemistry, 88, 261-265.