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五倍子属中国特产,是瘿绵蚜科 (Pemphigidae)的一些蚜虫寄生在漆树科盐肤木属(Rhus)的复叶叶翅、小叶、总轴上所形成的虫瘿。其外壳富含单宁,是一种重要的化工原料。广泛应用在金属防腐,稀有金属提取,合成纤维印染固色,食品工业、医药工业、三废处理、化学分析等方面。目前,每年约需1.1万吨,而年产量仅有4000吨左右,世界上供不应求。为了解决供需矛盾,人工生产五倍子在我国已普遍兴起。
Gallnut is a Chinese specialty that is found in some of the aphids of the genus Pemphigidae that parasitize the compound leaflets, leaflets, and total axons of the Rhus of Rhus. Its shell is rich in tannin, is an important chemical raw materials. Widely used in metal corrosion, rare metal extraction, synthetic fiber printing and fixing, food industry, pharmaceutical industry, waste treatment, chemical analysis and so on. At present, about 11,000 tons are needed each year, while the annual output is only about 4,000 tons, which is in short supply in the world. In order to solve the contradiction between supply and demand, artificial production of Chinese nutgall has generally arisen in our country.