Isatis indigotica [pi? Lɑn], also known as Solanum melongena, Bulb Cabbage, Broom Blue, Osmunda japonica, Leave a column, Don't leave a guest, and have a lump in the head, is a biennial herb in Cruciferae. Its edible part is fleshy bulb, which is crisp and tender and can be eaten fresh and pickled. The root system is shallow, the stem is shortened, and the leaves are planted on the shortened stem. The leaves are oval, obovoid or nearly triangular, green, dark green or purple, with wax powder on the leaves. The petiole is slender, and after a certain leaf cluster grows, the short stem expands, forming a fleshy stem, round or oblate, fleshy, green or green-white, and a few varieties are purple. Pollination habits are the same as those of cabbage.
Kohlrabi is a kind of cabbage, and its scientific name is Bulb Cabbage. Kohlrabi is a vegetable between kohlrabi and cabbage, which can be steamed as a side dish or shredded to make a cold salad. Its vitamin C content is extremely high, and a cup of cooked Isatis indigotica contains 1.5 times of the "recommended daily intake". It also contains a lot of potassium, and the content of vitamin E also exceeds 10% of the "recommended daily intake".
Potamogeton kohlrabi is a new special variety introduced from Europe, which takes swollen fleshy bulbs and tender leaves as edible parts. The bulbs are crisp, tender, fragrant and refreshing, and rich in nutrition, which is suitable for cold and fresh food. Young leaves are rich in nutrition and high in calcium, and have the health care functions of promoting digestion and removing phlegm, and are suitable for cold salad, stir-frying and soup. It is very popular in boxed gift dishes and supermarket sales. It has short growth period, few diseases and easy planting.
According to nutritionists' analysis, every 500g of Isatis indigotica contains 5.9g of protein, 4.1g of crude fiber, 3.3g of ash, 8 1 mg of calcium, 0/22mg of phosphorus and 22mg of iron.
The vitamin content of kohlrabi is very rich, especially when fresh juice is taken, which has a therapeutic effect on stomach diseases. Its signature nutrients, such as vitamin C, have the function of relieving pain and promoting granulation, and can promote the healing of gastric and duodenal ulcers. Contains a lot of water and dietary fiber, which can relax the bowels, prevent constipation and eliminate toxins. Isatis indigotica is also rich in vitamin E, which can enhance human immune function. The trace element molybdenum can inhibit the synthesis of ammonium nitrite, so it has certain anti-cancer and anticancer effects.