1. Shark's fin contains lipid-lowering, anti-arteriosclerosis and anti-coagulation components, which can prevent and treat cardiovascular diseases.

2. Shark fin is rich in collagen, but its protein is incomplete. Cook with meat, chicken, duck, shrimp, etc. , thus supplementing protein, increasing flavor and freshness, nourishing and softening skin.

3. Collagen rich in shark fin can nourish yin and strengthen yang, invigorate qi and stimulate appetite, and has medicinal effects such as preventing bone aging and bone spurs.

4. "Shark Chondroitin" contained in shark fin cartilage can prevent cancer, care skin and prolong life.

Efficacy:

1, relieve stress and reduce blood fat: shark fin contains components that reduce blood fat, resist arteriosclerosis and anticoagulation, and has preventive and therapeutic effects on cardiovascular diseases;

2, beauty and skin care: shark fin is rich in collagen, which is conducive to nourishing and softening the skin and mucosa, and is a good beauty food.

3, and stomach digestion: it has the effect of benefiting qi, appetizing and tonifying deficiency. It can moisten water to stimulate appetite, eliminate phlegm and eliminate fish accumulation, nourish five internal organs, strengthen waist strength and benefit deficiency.

4, improve immunity: people with insufficient blood, malnutrition and weak constitution, patients with various cancers, cardiovascular diseases and immune diseases are suitable for eating.

Extended data:

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First, the harm of fake shark fin

1. Fake shark fin is easy to eat industrial gelatin and sodium alginate.

(1) Zhejiang Consumer Protection Committee conducted a random inspection of dried shark fins in several aquatic products markets in the province, and the results showed that one third of the dried shark fins exceeded the standard, of which the golden hooked wings exceeded the standard 10 times, and some methyl mercury exceeded the standard.

(2) In Jinjiang agricultural and sideline food wholesale market, "three no products" such as no factory address, no shark fin model, no production date, no shelf life and no contact number are very common.

2. If the fake shark fin uses industrial gelatin and sodium alginate, it is likely to be polluted.

(1) Chen Yinghao, a chemistry teacher at Hang Cheng Senior Middle School, said that if fake shark fins contain cadmium and methylmercury, it probably comes from gelatin and sodium alginate, raw materials for shark fin synthesis.

"Gelatin and sodium alginate used in industrial production may have been contaminated by heavy metals." Gelatin and sodium alginate are edible and industrial.

"Food-grade gelatin and sodium alginate are sometimes used as food additives. If the dose is controlled within the safety standard, it will have little impact on the human body. " Teacher Chen said that gelatin and sodium alginate as additives can increase the viscosity of products and "make synthetic shark fins more like real shark fins".

(2) Teacher Zhang, majoring in environmental engineering from the School of Quality and Safety Engineering of China University, said that if proper amount of edible gelatin and sodium alginate were added to food, it would have little impact on human body. "But if black-hearted merchants use industrial gelatin and sodium alginate in food, they may contain a lot of impurities, so it is hard to say what pollution they have suffered in a complex environment."

Second, how to tell whether shark fins are true or false?

1, real shark fin

(1) The shark fin is white before soaking, but it is translucent or nearly transparent after cooking, and its shape is very full.

(2) Shark fin is rich in collagen and has good toughness.

(3) True shark's fin is filamentous cartilage in shark's fin, and the fins are in terminal shape, that is, one end of true shark's fin should be slightly round and thick, and the other end should be conical needles, and the fins are connected by fin flesh.

2. Fake shark fin

The color of (1) synthetic vermicelli is golden yellow, even if it is cooked after soaking, it will still appear pale yellow or yellowish brown.

(2) Synthetic vermicelli is brittle.

(3) Artificial cut-out synthetic vermicelli not only has no wing meat, but also has segments with general thickness at both ends.

Baidu encyclopedia-shark's fin