A plasma jet containing a dielectric barrier structure was used to treat potato eyes at 1.8 slm for different treatment times to inhibit the sprouting of tubers.The changes in the potato germination rate and related i...A plasma jet containing a dielectric barrier structure was used to treat potato eyes at 1.8 slm for different treatment times to inhibit the sprouting of tubers.The changes in the potato germination rate and related indices during the 16-day storage period after treatment were determined.The effects of the plasma treatment on weight loss rate,reducing sugar content,and surface microstructure of potatoes were also investigated.The results showed that the germination rates of potatoes in the 20 s and 40 s treatments were significantly lower than that in the control treatment.However,scanning electron microscopy showed that the plasma damage to the potato gradually deepened as treatment time was increased,and the plasma treatment caused irreversible damage when the treatment time was 40 s.The 20 s treatment significantly increased superoxide dismutase and catalase activities and inhibited the accumulation of reactive oxygen species(ROS)in potatoes,compared to the other treatments.The 20 s treatment improved the content of total phenolic flavonoids to enhance the antioxidant capacity of the potato tubers and maintain their quality.Therefore,the plasma jet treatment improved the ROS scavenging ability of potatoes and effectively inhibited potato sprouting during storage.展开更多
基金Science Foundation of China under Grant No.31972144Natural Science Foundation of Shandong Province(Grant Nos.ZR2020QC244).
文摘A plasma jet containing a dielectric barrier structure was used to treat potato eyes at 1.8 slm for different treatment times to inhibit the sprouting of tubers.The changes in the potato germination rate and related indices during the 16-day storage period after treatment were determined.The effects of the plasma treatment on weight loss rate,reducing sugar content,and surface microstructure of potatoes were also investigated.The results showed that the germination rates of potatoes in the 20 s and 40 s treatments were significantly lower than that in the control treatment.However,scanning electron microscopy showed that the plasma damage to the potato gradually deepened as treatment time was increased,and the plasma treatment caused irreversible damage when the treatment time was 40 s.The 20 s treatment significantly increased superoxide dismutase and catalase activities and inhibited the accumulation of reactive oxygen species(ROS)in potatoes,compared to the other treatments.The 20 s treatment improved the content of total phenolic flavonoids to enhance the antioxidant capacity of the potato tubers and maintain their quality.Therefore,the plasma jet treatment improved the ROS scavenging ability of potatoes and effectively inhibited potato sprouting during storage.
