Vitamin composition of new-generation corn distillers dried grains with solubles
2013
Jung, B. | Batal, A.B. | Ward, N.E. | Dale, N.
Corn distillers dried grains with solubles (cDDGS) is a coproduct of the production of corn-based ethanol. Researchers have extensively studied the energy, protein, amino acid, and mineral composition of cDDGS; however, an evaluation of the vitamin content of the cDDGS has yet to be undertaken. Thus, this study was conducted to determine the vitamin composition of cDDGS. In addition, correlations between crude fat and vitamin E (α-tocopherol) of the 6 samples of cDDGS were determined. Crude fat and 8 representative vitamins [vitamin A, vitamin D, vitamin E (α-tocopherol), thiamine, riboflavin, biotin, pantothenic acid, and pyridoxine] of cDDGS samples were analyzed and the determined vitamin content was compared with the standard values of the NRC. The mean value of vitamin E (α-tocopherol) in the 6 cDDGS samples was 6.8 mg/kg. In addition, the mean values of thiamine and riboflavin in the 6 cDDGS samples were 7.7 and 2.3 mg/kg, respectively. The mean values of pyridoxine and pantothenic acid in the cDDGS samples were 3.5 and 10.9 mg/kg, respectively. On the basis of regression analysis, a positive relationship existed between crude fat and vitamin E (R = 0.6677, P = 0.1473) in the 6 samples. These findings add to the information available regarding the vitamin profile of cDDGS and will assist in decisions made on the use of cDDGS in poultry diets.
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