介质阻挡放电降解果蔬贮藏环境中的乙烯

为了去除园艺产品贮运环境中的乙烯以达到保鲜效果，该研究采用一种介质阻挡放电（DBD）反应器对乙烯进行降解，对影响乙烯降解的各主要因素进行了考察。结果表明，放电间隙1 mm、放电功率大于15 W、气体流量1.5 L/min时乙烯的降解效果较好，30 min内乙烯被完全降解；产生的臭氧能够更好促进乙烯的降解，但也存在随功率增加臭氧含量突增的缺陷。低温等离子体技术在果蔬保鲜领域是有应用前景的。

Effects of dielectric barrier discharge on ethylene degradation in fruit and vegetable storage

The ethylene elimination is vital for the storage of fruit and vegetable . In this paper, a rod type dielectric barrier discharge (DBD) reactor was utilized to degrade ethylene. The parameters were investigated to evaluate the degradation effect, which included power consumption, flow rate, gap width, initial concentration and ozone content. Experimental results indicated that the highest ethylene removal efficiency could be achieved under the condition with the power of 15 W, the gas flow rate of 1.5 L/min and the gap width of 1 mm. The ozone generated in discharge could accelerate the ethylene degradation. But the ozone content could have a sharply increase when the power was higher than 20 W. The prospect of the application of non-thermal plasma is very bright in long-term storage of horticultural products.