Production line (100) of the one kind for being used to handle food (103) to the method for food sterilization and one kind on production line (201), including:Area (101) are surrounded in first processing and area (102) and conveyer system (103) are surrounded in the second processing, are configured to move food products through the first processing encirclement area (101) and be advanced through the second processing to surround area (102).First processing surrounds area (101) and is connected to gas supply system (113), passes through aperture (113;114) delivering gas temperature generates first processing atmosphere higher than the air-flow under 70 degrees Celsius to be surrounded in area (101) in the first processing, and at least part of food surface is exposed to while being advanced through the first processing and surrounding area to greater than about 60 degrees Celsius of the first processing temperature (Ts).Second processing surrounds area (102) and is configured with atomizer (106;107), to deliver the spraying of the supply of antimicrobial chemical agent (123) to the food (103) for being advanced through the second processing encirclement area.