五倍子是瘿绵蚜科的蚜虫寄生在盐肤木属植物叶上所形成的虫瘿。五倍子主要用作收敛剂,有消肿、消毒、防腐、止血、镇痛等功效。五倍子又是生产单宁酸、没食子酸和焦性没食子酸的原料。五倍子单宁在金属防腐蚀、稀有金属的提取、合成纤维印染固色、食品工业等方面得到广泛应用。随着科学技术的进步,五倍子的社会需求量日渐增加,五倍子的价格也随之攀升,产地收购价曾达到24元/Kg。 Gallnut is a maggot parasitized on the leaves of the genus Rhus. Gallnut is mainly used as an astringent, which has functions such as swelling, disinfection, antisepsis, hemostasis, and analgesia. Gallnut is also a raw material for the production of tannic acid, gallic acid and pyrogallic acid. Gallnut tannin has been widely used in metal anti-corrosion, extraction of rare metals, synthetic fiber printing and fixing, and food industry. With the advancement of science and technology, gallic societal demand is increasing day by day, gallic prices have also risen, and the purchase price of origin has reached 24 yuan/Kg.