Vitamins and Minerals in Kale. Kale are probably best known for being loaded with calcium, but they also can be a great source of vitamin C and beta carotene; in fact a 1-cup serving provides twice the daily requirements for these 2 nutrients.Here is a snapshot of the nutritional makeup of kale.itamins and Minerals Found Inside Kale. Kale -- loaded with nutrients our bodies seek, Kale can be both nutritious and delicious when juiced with other ingredients. Here are a few of the questions we attempt to answer about Kale.