What are the functions of ginkgo trees?

The ginkgo tree, also known as the ginkgo tree, grows slowly and has a very long life. under natural conditions, it takes more than 20 years from planting to bearing ginkgo fruit, and it takes 40 years to bear a large number of fruits, so it is nicknamed "Gongsun tree", which means "the male species and the sun gets food". It is the old birthday boy in the tree, which is called "ginkgo" in ancient times. Ginkgo biloba has appreciation, economic and medicinal value. Ginkgo biloba is the oldest gymnosperms left over from the Quaternary glacier movement, and it is one of the most precious tree species in the world, so it is regarded as a "living fossil" in the plant kingdom.

Edible value

Ginkgo fruit is famous for its ginkgo fruit, which is rich in nutrition, containing 2.16% crude fat, 62.4% starch, 5.2% sucrose, 1.1% reducing sugar, 0.26% nucleoprotein, 3% minerals and 1.2% crude fiber. And vitamin C 66.8~129.2mg/100g, vitamin E 6.17~8.05mg/100g, riboflavin, carotenoid, anthocyanin, and contains 17 kinds of amino acids, ginkgo alcohol (10-octacosanol), ginkgo ketone, octacosanol, B-sitosterol, stigmasterol, alkaloids and so on. Trace elements include Fe, Cu, Mn, Zn and major elements Ca, Mg and so on. It has high edible value. Edible ginkgo fruit can inhibit bacteria and sterilization, dispel disease and stop cough, resist waterlogging and insects, stop turbidity and reduce serum cholesterol. But it also contains small toxic substances: hydrocyanic acid, ginkgolic acid, hydrogenated ginkgolic acid, ginkgolic acid, ginkgo alcohol. Therefore, when eating, we should pay attention to the way of eating ginkgo. If cooked and eaten, ginkgo acid and ginkgo dicarboxylic acid can be decomposed, hydrocyanic acid boiling point is low and easy to volatilize and remove, so ripe ginkgo is less toxic. In order to prevent ginkgo poisoning, cooked food and less food are the fundamental methods. The medical profession believes that raw ginkgo should be controlled at about 10 tablets a day. Excessive consumption will cause abdominal pain, fever, vomiting, convulsions and other symptoms. Some people like to drink with ginkgo biloba leaves, which is dangerous. Ginkgo biloba leaves contain toxic ingredients, which can endanger heart health if the dose is too high or for a long time.

Economic value

The trunk of ginkgo biloba is straight, and wood is an advanced material for making musical instruments and furniture. Ginkgo wood is of high quality and expensive, and it is known as "Yinxiang wood" or "Yinmu". Ginkgo wood has luster, straight texture, fine structure, easy processing, non-cracking, strong corrosion resistance, easy to paint, low nail digging force, special medicine flavor and strong moth resistance. Ginkgo biloba wood can not only make handicrafts such as carved plaques and wooden fish, but also make high-grade furniture such as cupboards and desks. Ginkgo biloba wood is an ideal material for making musical instruments because of its resonance, sound conductivity and flexibility. Can make surveying and mapping utensils, pens and other cultural items, but also the production of chessboards, chess pieces, sports equipment, seals and small handicrafts of high-quality wood. In industrial production, Silverwood is the most suitable for making X-ray machine filter board, textile printing and dyeing roll, machine model and bodiless lacquer ware wooden mold, plywood, chopping board, wooden telephone and so on. Ginkgo biloba exocarp can be extracted from tannin extract. Seeds contain hydrocyanic acid, histamine acid, protein and so on. Seed kernel for consumption, multi-food poisoning, traditional Chinese medicine with seeds and leaves can be used as medicine.