Is fried fish glue still nutritious?

Fish glue is also called swim bladder. Protein, a small biological collagen contained in swim bladder, is the raw material for human body to supplement and synthesize protein. Easy to absorb and utilize. It is stored in human tissues in the form of aqueous solution, thus improving the nutritional status of tissues and accelerating metabolism. Studies have proved that foods rich in collagen can affect the physiological functions of certain tissues through the binding water of collagen, thus promoting growth, enhancing disease resistance, delaying aging and resisting cancer. In the Han Dynasty in China, medical books recorded the medicinal effects of "swim bladder"; In the Tang Dynasty, it was regarded as one of the tributes, and the theory of traditional Chinese medicine was: "swim bladder" and its nourishing function; It is a good product for women's beauty care. Medical research has found that "swim bladder" contains a large number of vitamins and trace elements, among which vitamin A content exceeds that of other fish products, which is very beneficial to beauty and calcium supplementation. (Quoted from: Baidu Encyclopedia, "swim bladder" entry. )

Protein will be destroyed when the swim bladder is fried, so the content of collagen will be reduced accordingly. The oil used for frying is a high-energy substance, so the energy provided by the swim bladder will increase after frying. Because vitamins will lose their activity after high temperature treatment, the vitamin content will be reduced accordingly, and vitamin A is a fat-soluble vitamin, which will be dissolved in oil, so judgment will also be lost.