Determination of vitamin composition of Dissotis rotundifolia leaves

A B S T R A C T The vitamin compositions of Dissotis rotundifolia leaves were investigated using spectrophotometric methods. The result revealed high concentrations (mg 100g) of retinol (7.19 1.18), cholecalciferol (7.07 0.08), tocopherol (3.27 0.02), and thiamine (2.67 0.07), with low concentrations (mg/100g) of pyridoxine (0.81 0.05), niacin (0.54 0.02), riboflavin (0.16 0.01), ascorbic acid (0.31 0.02), phylloquinone (0.08 0.00), and cobalamin (0.05 0.00). The high concentrations of some of the vitamins indicate that Dissotis rotundifolia leaves could serve as a good source of some vitamins in human nutrition. K e y w o r d s Vitamins and Dissotis rotundifolia