<b>Laboratorial system of carbohydrate fractions of energetic concentrate</b> - DOI: 10.4025/actascianimsci.v28i2.652

Abstract

The aim of this work was to evaluate a laboratorial system of carbohydrate fractions to identify and quantify the fractions that compose this nutrient. The following fractions were determined: simple sugars (SS) using the colorimetric phenol-sulfuric method; digestible starch (DS) and resistant starch (RS) by enzymatic digestions; total fiber (TF) using the enzymic-gravimetric method; neutral detergent fiber (NDF) and soluble fiber (SF) estimated by difference TF - NDF, in grains of corn and sorghum, citric pulp, wheat middlings, wheat mills and rice bran. The coefficient of variation for fractions SS, DS, RS, TF and NDF varied from 4.81 to 19.17%; 4.58 to 15.03%; 2.42 to 9.91%; 1.23 to 8.23% and 1.16 to 8.42%; respectively. A good repeatability of the method used was observed. The fraction identified the main groups of carbohydrates composed on the food and it can be a reference to future works.