Abstract:This study aimed to develop an active packaging film incorporating Polygonatum sibiricum polysaccharide （PSP） and investigate its practical efficacy in strawberry preservation. A solution casting method was employed，using konjac glucomannan （KGM） and polyvinyl alcohol （PVA） serving as the primary filmforming materials，citric acid （CA） as the crosslinking agent，and PSP as the active component. KGM/PVA/CA/PSP active packaging films with antibacterial and antioxidant properties were successfully prepared and applied for strawberry packaging. A blank group and a control group（strawberries packaged with commercially available PE cling film） were established. The preservation effects were comprehensively evaluated by comparing various indicators，including the appearance and firmness of strawberries across different groups. The results indicated that compared with the blank and control groups，strawberries packaged with the active packaging film retained vibrant color and better overall quality on day 10. The decline in firmness was the smallest，maintaining a relatively high level of 1.05 N/cm2. Both the decay rate and weight loss rate were minimized，reaching 16.53% and 10.33%，respectively. Furthermore，the active packaging film effectively delayed the peak time of soluble solid content and slowed the rate of vitamin C degradation in strawberries. In conclusion，the KGM/PVA/CA/PSP active packaging film demonstrated excellent preservation performance for strawberries and effectively extended their shelf life.