利用去粘膜后的猪肠衣盐液制备肝素钠,国外早有专利报道,主要是采用甲醇沉淀法。这种方法成本高,肝素损失多,因而收率低。国内南京和上海生化制药厂采用国产大孔树脂从肠衣盐液中吸附肝素的生产工艺,不仅克服了上述沉淀法的缺点,而且为肠衣盐液制备 The use of mucosal mucosal mucosal salt preparation of heparin sodium, foreign patents have long been reported, the main method is the use of methanol precipitation. This method is costly and has a high heparin loss and therefore low yields. Domestic Nanjing and Shanghai Biochemical Pharmaceutical Factory made using macroporous resin adsorption of heparin from the sausage casing production process, not only to overcome the shortcomings of the precipitation method, but also for the preparation of enteric salt solution