PURPOSE: To obtain the subject film or sheet capable of retaining the freshness of natural flowers, fruits and vegetables, or perishables and also enabling foods including cooked ones to be imparted with flavor or palate, through packaging these commodities therewith, containing at least one kind of simple substance active ingredient among propolis, hinokitiol, spice, smoked liquid, etc.

CONSTITUTION: This film or sheet of any kind is such as to have been provided with at least one kind of simple substance active ingredient among propolis, hinokitiol, spice, smoked liquid, etc. The provision can be made through formation of active ingredient layer as well as incorporation or coating. There is no need of further addition of any antimicrobial agent or antioxidant.