the ability to preserve food and tranport food is part of the transportation technology for food
food_storage_container is storage_device. preserving_food is food_manipulation. preserving_food is becoming. pasteurization is preserving_food. food_storage_container is not storage_device. preserving_food is not becoming. smoking_food is preserving_food. convenience_food is food. preserving_food is not food_manipulation. canning is preserving_food.