Importance
Kohlrabi is the swollen stem of Brassica oleracea var. gongylodes, valued for its crisp texture, mild cabbage-turnip flavor, vitamin C, potassium, fiber, vitamin B6, folate, magnesium, calcium, and cruciferous phytochemicals. Per 100 g, raw kohlrabi provides about 27 calories, 6.2 g carbohydrate, 3.6 g fiber, 1.7 g protein, and very little fat. Its edible bulb-like stem is not a root; it is an enlarged stem that stores water, fiber, minerals, organic acids, amino acids, and sulfur-containing Brassica compounds. The leaves are also edible and are richer in green pigments, but the bulb is the most common vegetable portion.
Kohlrabi supports everyday nourishment through vitamin C, fiber, potassium, vitamin B6, folate, calcium, and magnesium. Vitamin C contributes to collagen formation, antioxidant recycling, immune barrier function, and connective tissue maintenance. Fiber supports digestive movement, stool bulk, microbial fermentation, and short-chain fatty acid production. Potassium supports fluid balance, nerve signaling, and muscle contraction. Vitamin B6 supports amino acid metabolism and neurotransmitter-related enzyme systems. Folate participates in one-carbon metabolism, DNA synthesis, and normal cell division. Calcium and magnesium support bone mineral structure, nerve signaling, muscle function, and enzyme activity.
For cancer and ailment-support nutrition, kohlrabi is relevant because Brassica vegetables contain glucosinolates, glucobrassicin, sinigrin-related compounds, isothiocyanates, indole-related compounds, vitamin C, phenolic acids, flavonoids, quercetin derivatives, kaempferol derivatives, fiber, potassium, magnesium, and mineral cofactors. These compounds connect to Nrf2-related antioxidant response, NF-kB inflammatory signaling balance, glutathione-related redox balance, phase II detoxification enzyme signaling, one-carbon metabolism, AMPK-linked metabolic regulation, insulin-related carbohydrate handling, endothelial function, apoptosis-related cell signaling, and gut fermentation pathways supported by fiber. Kohlrabi contributes crisp cruciferous fiber, vitamin C, folate, minerals, sulfur-related compounds, and Brassica phytochemicals tied to cellular repair, inflammatory signaling balance, vascular support, digestive function, detoxification-enzyme activity, and normal metabolic regulation.
Kohlrabi pairs well with cabbage, carrots, apples, citrus, lentils, chickpeas, beans, mushrooms, onions, garlic, potatoes, brown rice, quinoa, barley, parsley, dill, basil, walnuts, almonds, and pumpkin seeds. Its strongest nutritional identity is the combination of crisp enlarged stem, vitamin C, fiber, potassium, folate, glucosinolate chemistry, phenolic acids, and Brassica-family phytochemicals connected to antioxidant, digestive, vascular, metabolic, inflammatory, detoxification-enzyme, and cellular defense pathways.
