Separation and purification method of tannin

The invention discloses a separation and purification method of tannin, which belongs to the technical field of separation and extraction of natural products, and is characterized by comprising the following steps: pretreatment of macroporous adsorption resin, extraction of tannin, preparation of a tannin solution, adsorption of tannin, desorption of tannin, acquisition of high-purity tannin and the like. The method is mainly used for separating and purifying tannin, the process is simple and convenient, the characteristic that D-101 macroporous resin has good adsorption and desorption performance on tannin in bruguiera gymnorrhiza is used for separating and purifying tannin, and application and popularization value is achieved; and scientific and reasonable development and utilization of tannin resources of mangrove plants are facilitated. 本发明公开了一种单宁的分离提纯方法，属于天然产物分离提取技术领域，其技术方案要点是：包括大孔吸附树脂的预处理、单宁的提取、单宁溶液的配制、单宁的吸附、单宁的解吸和高纯单宁的获得等步骤。本发明主要用于分离提纯单宁，该方法工艺简便，利用D-101大孔树脂对木榄中单宁有着良好的吸附与解吸性能，将这一特性用于分离提纯单宁，具有推广应用价值；有利于科