The present invention relates to a method for increasing the shelf life of a fresh food product, the following steps: producing the fresh food product in a production facility; delivering the produced fresh food product in a conveyor facility; Packaging the food product in a packaging facility; and washing at least one facility selected from the group comprising a production facility, a conveyor facility and a packaging facility.本発明は、生鮮食料品の貯蔵寿命を増加させる方法に関し、以下の工程:前記生鮮食料品を生産設備で生産する工程;生産した前記生鮮食料品をコンベヤ設備で配送する工程;そのように配送した前記食料品を包装設備で包装する工程;並びに生産設備、コンベヤ設備及び包装設備を含む群から選択される少なくとも1つの設備を洗浄する工程、を含む。