Transferrin freeze-drying protective agent and application thereof

The invention discloses a transferrin freeze-drying protective agent and application thereof. In the application, the transferrin freeze-drying protective agent is prepared from water and a non-aqueous component, and the non-aqueous component is prepared from mannitol, trehalose, glucan and polyvinylpyrrolidone. The transferrin freeze-dried powder prepared by using the freeze-drying protective agent provided by the invention is good in molding, high in stability and low in activity loss after freeze-drying; and normal-temperature long-term storage and normal-temperature transportation can be realized. 本申请公开了一种转铁蛋白冻干保护剂及其应用。本申请中，所述转铁蛋白冻干保护剂包括：水和非水组分，所述非水组分包括甘露醇、海藻糖、葡聚糖和聚乙烯吡咯烷酮。使用本申请提供的冻干保护剂制备获得的转铁蛋白冻干粉剂成型好，稳定性高，冻干后活性损失低；能够实现常温长期保存，常温运输。