The obtained contents of dry matter, carbohydrate, protein, fat, and ash of raw carrot samples were also determined in the present study (Table 3). As seen in Table 3, the contents of β-carotene and vitamin C, the two main bioactivity components in carrots, were 5.65 and 12.46 mg in a 100 g fresh carrot, respectively. The amount of vitamin C and β-carotene often diminishes during drying. Therefore, it was of interest to establish the effects of the different drying processes on the stability of vitamin C and β-carotene. Because vitamin C is relatively unstable to heat, oxygen, and light, the retention of this nutrient can be used as an indicator for the quality of dried carrot slices. If vitamin C is retained well, other nutrients are also likely to be preserved