Cabbage (kohlrabi) generally refers to cabbage (Brassica of Cruciferae). Cabbage is an annual or biennial herb of Cruciferae and Brassica, which is a biennial herb and frosts. Short and stout annual stems are fleshy, unbranched, green or grayish green. The basal leaves are thick, layered into spheroids, oblate, milky white or light green; Biennial stems are branched and have cauline leaves. Basal leaves are rounded at the top, sharply reduced to a very short petiole at the base, with broad wings and wavy and inconspicuous serrations at the edge; The upper stem leaves are ovate or oblong-ovate, and the stem is supported at the base; The top leaf is rectangular, about 4.5 cm long and 1 cm wide, holding the stem. Racemes terminal and axillary; Flowers pale yellow, 2-2.5 cm in diameter; Pedicel length 7- 15 mm; Sepals erect, linear and oblong; Petals are broadly elliptic, obovate or nearly round, with slight defects at the top and obviously narrow claws at the base. The claws are 5-7 mm long. Silique is cylindrical, slightly flat on both sides, with prominent midvein and conical beak; The fruit stalks are thick and straight. Seeds spherical, brown. It blooms in April and bears fruit in May.
Cultivated throughout China for vegetables and fodder. The thick juice of leaves is used to treat gastric and duodenal ulcers. It is one of the important vegetables in China. Except for Chinese kale, which originated in China, all varieties of Chinese cabbage originated from the Mediterranean Sea to the North Sea coast. As early as 4000-4500 years ago, it was cultivated in ancient Rome and ancient Greece. Northeast China is commonly known as "kohlrabi" and Yunnan is commonly known as "Lotus White".
Cabbage is rich in high-quality protein, cellulose, minerals, vitamins and other nutrients. Eating purple cabbage can supplement nutrition and keep fit.
It has been found that the buds of cabbage can improve the insulin resistance of type 2 diabetes. In addition, a Chinese cabbage contains about 7.8 grams of fiber, and taking enough fiber can delay the increase of blood sugar after meals and promote blood lipid metabolism. Maintain bone density. Maintaining bone density requires not only sufficient calcium and vitamin D, but also a variety of nutrients to maintain bone metabolism, one of which is vitamin K, which is an auxiliary factor to help enzymes synthesize calcium-binding protein, which is related to maintaining bone density. Every 100g of Chinese cabbage is rich in vitamin K9 about 100-200 micrograms, and the intake of100g can achieve sufficient intake for one day to avoid vitamin K deficiency.