How to identify the real shark's fin
Identify from the color and transparency
The real shark's fin is white before soaking, made into a cooked food into a crystal clear translucent or nearly translucent, the form is very full; while the fake shark's fin in terms of color, synthetic fan color is golden yellow, even after soaking to do cooked, but also will still be presented in light yellow or yellowish brown.
Look at its elasticity, toughness and texture
Real shark fins are rich in collagen, good toughness, any how to break will only become curved and will not break; while the fake shark fins are very brittle, and natural shark fins have a different texture, from the toughness of the hand a break on the break. However, it should be noted that if the use of warm water soak, the situation is different, with warm water soak good real shark's fin with a gentle tug will be broken, while the fake shark's fin is not easy to break, the reason is that the fake shark's fin in the fish glue.
From the shape of the identification
The real shark fins are shark fins in the filamentous cartilage, and the fins into the end of the form, that is to say, the real shark fins should have a slightly rounded end of the thick, and the other end of the gradual thinning of the needle, the fin between the needle fin meat connected. And fake shark fins, that is, synthetic fans are artificially cut out of the length, not only no fin meat, both ends are generally thick and thin cut.
Nutritional value of shark's fin
Supplemental protein
Shark's fin is rich in protein, can be conducive to nourishing the skin, people can eat to achieve the effect of skin care, is a very good beauty food.
Lowering blood pressure
If you are suffering from cardiovascular disease, eating shark's fin can effectively help lower blood lipids, anti-atherosclerosis and anti-coagulant, which is effective in the prevention and treatment of cardiovascular system.
Benefit from gas and appetizer
If you have a deficiency of gas or loss of appetite, eating shark fin can effectively open the appetite, and effectively eliminate the toxins accumulated in the body, tonifying the five viscera, long waist, and benefit from the deficiency of consumptions. For weak people, it is a very good complementary food.
What is shark fins
Shark fins are made of shark fins in the production of expensive food, under the category of delicacies of the sea. Shark fins are similar in shape to vermicelli, and shark fins are usually processed into a thin shredded vermicelli, which is cooked in a transparent shredded form. Shark fins contain about 80% protein, as well as fats, sugars and other minerals. Shark's fin is a valuable cooking ingredient, but its nutritional value is not very high because the protein contained in shark's fin lacks an essential amino acid and is an incomplete protein. The process of making shark's fin is very complicated and cumbersome, requiring professional processing and a certain amount of time, so it is also one of the reasons for the high price. And although shark's fin is a rare and valuable food, there are many businessmen who will offer plus shark's fin or inferior shark's fin pretending to be genuine shark's fin in order to make a profit, so you have to pay more attention when buying.
Harms of fake shark fins
1. Containing industrial pollution raw materials. According to authoritative information, if the fake shark fins contain cadmium and methylmercury, it is likely to come from the raw materials of synthetic shark fins - gelatin and sodium alginate. Gelatin and sodium alginate, which are used in industrial production, may themselves have been contaminated with heavy metals.
However, there is a distinction between gelatin and sodium alginate for food and industry. Food-grade gelatin and sodium alginate, sometimes used as food additives, if the dosage is controlled within the safety standards, the impact on the human body is not significant. Gelatin and sodium alginate as additives can increase the viscosity of the product and "make synthetic shark fins more like real shark fins".
2. If the food is added in the right amount of food gelatin and sodium alginate, it will have little effect on the human body, but if there is a black hearted businessman to the industrial gelatin and sodium alginate, used in food, which may contain a lot of impurities, in the complex environment what has been contaminated is also not easy to say.