Can eat, is not fresh to eat up, it is recommended to wash in eating.
But river crabs dead is ten thousand play can not be eaten, otherwise it will be poisoned. As the river crab dead body will occur a toxin. Sea crab in the refrigerator for a day or two are able to eat. Buy dead sea crabs to smell there is no odor, but also weigh, too light, it is clear that the dead time is long. Sea crabs after a day or frozen no more than half a month, can be eaten.
Of course, if it is dead in the sea, it is best not to eat. Parasites, people eat easy to hold disease, sea crabs live after the best in their own pots with clean fresh water for a few days, counted as cleaning the crab's digestive organs.
Nutritional value of sea crabs
Three warty pike crab meat tender, sweet taste, rich in nutrition. Scientists of the basic nutrient composition of different parts of the three warty pike crab determination, found that the crab meat protein content is the highest, followed by the male gonads, the female gonads in the protein content is the lowest; and the order of the three crude fat content is just the opposite. Crab meat contains 20 kinds of amino acids. Among the essential amino acids, leucine and lysine were found in high content. Of the non-essential amino acids, glutamic acid is the highest, followed by arginine and aspartic acid.
The main lipids in the muscle of Portunus trituberculatus crab are phospholipids, and triglycerides are the lowest. The edible portion of Portunus trituberculatus crab is also rich in unsaturated fatty acids. Among them, the unsaturated fatty acid content of the female gonads is higher, followed by the male gonads, and the crab meat is the least. The content of calcium, magnesium and zinc in the edible part of Portunus trituberculatus is higher than that of abalone; the content of calcium and magnesium in the muscle is higher than that in the gonads, while the content of zinc and iron in the female gonads is higher than that in the muscle and male gonads.
The above references? Baidu Encyclopedia-Sea Crab