In this manuscript,the mechanical properties and stabilities of gelatin film by crosslinking with different dosage of natural secoiridiod Oleuropein A were investigated.

Based on the previous work of preparation of microbial transglutaminase(mTG) modified edible gelatin films,lower drying temperature and wet orientation techniques were adopted to obtain edible gelatin films which possess better mechanical properties(tensile strength was 18.

Gelatin film has excellent biocompatibility and biodegradability.

While influences of coating temperature,pH of film-forming solution,concentration of plasticizer-glycerin,types and concentrations of cross-linking agents,humidity of storage on the properties of gelatin film were studied in details.

In addition,the properties of gelatin film could be adjusted according to the application,so gelatin film is applied in many fields.

The effects of the concentration and pH of gelatin solution,amount of plasticizer-glycerin and ethanol on the tensile strength of gelatin films were studied.

Gelatin membrane cross-linked was prepared by casting aqueous mixture of Cr2(SO4)3 and gelatin onto a glass plate and then evaporating the water at room temperature.

It has good biocompatibility and biodegradability, as well as excellent film-forming and so on, so it has become the research hotspot in recent years and has achieved certain results, but the gelatin membrane out of industrialization has always been difficult at home and abroad.