高强脉冲电场与臭氧联用降解壳聚糖  

Degradation of chitosan by high voltage pulsed electric field and ozone

作　　者：罗文波[1] 唐超[1] 曾新安[1] 于淑娟[1] 

机构地区：[1]华南理工大学轻工与食品学院,广东广州510640

出　　处：《中国甜菜糖业》2013年第1期9-11,17,共4页China Beet & Sugar

基　　金：国家自然科学基金（21076088）;广东省国际合作项目（2008B05040002）资助

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。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.

关 键 词：高强脉冲电场 臭氧 协同效应 壳聚糖 

分 类 号：TS245.9[轻工技术与工程—制糖工程]