The navel of male crab is triangular, while that of female crab is oval.
2. nutrients
Male crabs have crab paste, which is the sperm gland of male crabs. The female crab has crab roe, which is the ovary and egg of the female crab.
3. Expiration time
Male crabs are the most fragrant in September of the lunar calendar, with more crab fat; In August of the lunar calendar, the mother crab is the fattest and the crab feet are yellow.
4. Size
Male crabs are generally larger, while female crabs are generally smaller than male crabs.
Expand the nutritional value of crabs.
Crabs are rich in nutritional value and delicious. Crabs are rich in protein and trace elements, which have a good nourishing effect on the body. Crabs contain more vitamin A, which is helpful for skin keratinization. Crabs also have anti-tuberculosis effects, and eating crabs is of great benefit to the rehabilitation of tuberculosis.
Crabs contain a lot of protein, mostly high-quality protein. These high-quality protein also contain amino acids, which can increase lymphocyte immunity, promote wound healing and have anti-infection effects. Crab meat contains a lot of nutrients, among which vitamin A and vitamin E are the highest. These two vitamins can protect mucosal epithelial tissue, soften blood vessels and resist aging.
Baidu encyclopedia-crab