Gluconolactone tofu can be stored in an incubator for two to three days. According to relevant public information, boxed lactone tofu is made of gluconic tofu, and lactone is used as coagulant, which is not easy to store. Boxed lactone tofu is nutritious, so it is recommended to keep it in the refrigerator. It can be stored in cold storage for about two to three days, and it will deteriorate if it is kept for a long time.