There are many kinds of crabs, and there are about 600 kinds of crabs in China. Crabs can be categorized into freshwater and saltwater. Freshwater crabs are the most famous genus of "hairy crabs", commonly known as river crabs, hairy crabs and clear-water crabs, which usually mature from September to October. The common pike crabs and flower crabs on the market are seawater crabs. Although river crabs and sea crabs are both crabs, there are big differences between the two, the most obvious is the growing environment is different. River crabs generally grow in freshwater areas such as rivers, lakes and reservoirs where the salt concentration is low. Generally speaking, sea crabs grow in oceans with high salt concentration. The nutritional value of sea crabs is higher than river crabs because sea crabs, with high protein food, are very good for health.

I, river crabs and sea crabs river crab nutrient composition differences

Each 100 grams of crab meat contains 17.5 grams of protein, 1.2 grams of fat, cholesterol 65 mg, each 100 grams of sea crab meat contains 13.8 grams of protein, 2.3 grams of fat, cholesterol 125 mg. Crab meat contains less fat and cholesterol compared to sea crab meat. 100g of sea crab meat contains 30mcg of vitamin A, 2.99mg of vitamin E, 208mg of calcium, 1.6mg of iron, 3.32mg of zinc and 82.65mcg of selenium. In general, both river and sea crabs are rich in vitamins and minerals in different amounts.

Second, crab roe and crab paste

Female crabs have a rounded abdomen, commonly known as the "round navel", male crabs have a triangular abdomen, commonly known as the "pointed navel". Crab roe is the female crab ovaries and digestive glands, crab paste is the male crab spermatophore spermatozoa and a collection of organs. In September of the lunar calendar, female crabs are full of eggs, and the yellow cream is plentiful. in October, male crabs have the best gonadal development and are the most beautiful, yellow and white, tender and fat. Crab yolk and crab paste have similar nutrients and relatively high fat content, up to 15% or more.

But it's important to note that crab yolk contains about 466 milligrams of cholesterol per 100 grams, much higher than the cholesterol content of eggs. It is a downright high-cholesterol food. As we approach the Mid-Autumn Festival every year, this is also the time when crabs are at their most delicious. River crabs are different and need to be chosen according to your preference.