All along, the network on crayfish grew up in the gutter, etc. heard rumors. Whether these rumors are true or false?
Crayfish are growing up in the gutter it?
Crayfish adaptable, and sludge in a clean environment can survive. In contrast, in the clean water, the crayfish to eat fresh food, breeding stronger, heads and look great.
And dirty environment will make growth and reproduction are limited, this is because the crayfish in the growth process to be repeated shelling, shelling of sewage environment will make it less often or not shelled. Chenshun Sheng pointed out that, although no specific statistics, but it can be said, is now available in the vast majority of fresh water crayfish farming.
Crayfish are rich in heavy metals it?
In fact, the crayfish is very sensitive to heavy metals, on the one hand, excessive heavy metals in water, they can not succeed shelling, can not survive. On the other hand, the accumulation of heavy metals can be, the more high-end nature of the food chain bioaccumulation of heavy metal, and crayfish in the bottom of the food chain, so under normal culture conditions, the heavy metal residues generally not exceeded.
Experts told reporters that they had crayfish preliminary investigation conducted on the market, currently marketed in crayfish cadmium, lead and mercury levels are almost no exceeded. Exit Inspection and Quarantine Technology Center of Hubei Province has done testing, in addition to shrimp line parts, heavy metals crayfish are standard. So, eat crayfish less likely to cause heavy metal poisoning.
Eat crayfish can cause muscle dissolve it?
Before cooking, businesses in order to save time and costs, usually use wash shrimp meal clean crayfish. Many people believe that the Industrial acid wash shrimp meal – “acid”, is the main cause muscle dissolved. Experts told reporters that the current evidence about eating crayfish cause muscle dissolved is very small.
Purdue University Agricultural and Biological Engineering Department of Food Dr. Clouds also pointed out that, in fact, widespread presence of oxalic acid in foods, such as spinach can contain a lot. Although oxalic acid itself is corrosive, a lot of food is only a short time, it will stimulate the body’s digestive system due cause vomiting, nausea and other symptoms. But the patient does not dissolve similar symptoms of muscle, and thus the description of oxalic acid is not the culprit cause muscle dissolved.
Experts concluded by reminding that eating crayfish to remove the head of the prawn and shrimp in addition to, but also to remove the shrimp line, because the line was inside the shrimp feces, mainly the cooking temperature and time may be in possession of bacteria. In practice, after the head of the crayfish is removed, peeled shrimp carapace extending the shrimp in the middle of a thin wire from head to tail removed, this thin and some were black, some were white.
