A device (1) for controlling the metabolism of fruits and/or vegetables contained in refrigerated storage cells, comprising a first sensor (2) and a second sensor (3), which are adapted to measure the percentage of oxygen that is present in a refrigerated storage cell (10), the first sensor (2) not being influenceable in its measurement by the presence of gases generated by the fruits and/or vegetables contained in the refrigerated storage cell (10) during the preservation process, the second sensor (3) being influenceable in its measurement by the presence of gases generated by the fruits and/or vegetables contained in the refrigerated storage cell during the preservation process; the device is further provided with means (4) which are adapted to compare the measurements made by the first sensor (2) and by the second sensor (3).