中文摘要：

利用臭氧的强氧化性和电场的高能量降解大分子壳聚糖为壳寡糖。在乙酸均相体系中，高强脉冲电场与臭氧联用处理壳聚糖30min时，壳聚糖的降解率达到98．5％。设计了脉冲电场、臭氧单独处理和电场与臭氧联用处理3种实验方案，结果表明：电场与臭氧联用的处理效率要高于分别处理效率，电场与臭氧联用具有协同作用。经红外光谱分析，降解产物与原料壳聚糖结构基本一致。

英文摘要：

The vigorous oxidation ability of ozone and the high energy input of pulsed electric field were utilized to degrade the macromolecular chitosan to oligochitosan. The degradation rate was up to 98.5% after the combined treatment of high voltage pulsed electric field and ozone for 30 minutes in acetic acid homogeneous phase. Three experiment schemes of individual and combined treatments of high voltage pulsed electric field and ozone were designed the results showed that the efficiency of combined treatment was higher than that of single treatments, so the combination of high voltage pulsed electric field and ozone had high synergistic effect. By infrared spectrum analysis, the structure of degraded chitosan was not changed compared to the initial chitosan.