Avaliação da utilização de cereais (arroz, milho e maalimentarespira) como suplementos

Abstract

The present work consisted in the determination of nutrients in cereals, rice, corn and sorghum by the “FAASˮ techniques for the determination of Ca, Mg, Fe and Zn; “FCˮ for determination of Na and K,“ EAMˮ for determination of P, Soxhlet extraction and gravimetry for determination of fats, Kjeldahl method for determination of proteins and volumetry, using Fehling solutions for determination of sugars. In total, 12 samples were analyzed, of which 3 samples constituting a mixture of cereals and another 9 samples determined separately as a way to have a basis regarding the nutrient content in the cereals. The analyzed cereal samples were obtained in the district of Sussundenga in Manica. The levels of Ca, Mg, Fe and Zn minerals determined by “FAAS ˮ Na and K determined by“ FCˮ P determined by “EAMˮ, showed good results with greater emphasis on sample M3 with 40.58; 117.5; 18.03; 9.78; 38.19; 258.24 and 157.78 0.27mg / 100g in Ca, Mg, Fe, Zn, Na, K and P, respectively. High values ​​of K and P were found in the analyzed samples. The levels of sugars determined by titration, proteins by the Kjeldahl method and fats by Soxhlet extraction and gravimetry, are somewhat good, with greater emphasis on the M3 sample with 92.22%; 9.34mg / 100g and 4.08% in sugars, proteins and fats, respectively, with some high values ​​in sugar content. To verify homogeneity, coefficient of variation values ​​were determined and it was found that mixtures with a low CV value were more homogeneous. Minerals such as potassium and phosphorus showed high levels, this was due to the fact that these elements are used as fertilizers. The supplement made of bran showed high levels of nutrients, this was due to the fact that this layer made up of husks retains a larger amount of fertilizers [6].