微型空化器内引入气流强化壳聚糖降解的效果研究  

Study on Enhancing Chitosan Degradation by Introducing Airflow into Micro-Cavitator

作　　者：曹艳 黄崇煌 黄承都[1,2] 任仙娥 黄永春[1,2] CAO Yan;HUANG Chong-huang;HUANG Cheng-du;REN Xian-e;HUANG Yong-chun(College of Biological and Chemical Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;Key Laboratory of Green Processing of Sugar Resources in Guangxi,Liuzhou 545006,China)

机构地区：[1]广西科技大学生物与化学工程学院,广西柳州545006 [2]广西糖资源绿色加工重点实验室,广西柳州545006

出　　处：《中国调味品》2021年第12期20-26,共7页China Condiment

基　　金：国家自然科学基金(31660472);广西科技基地和人才专项(桂科AD20238033);广西高校中青年教师基础能力提升项目(2020KY08027)。

摘　　要：对比研究了在微型空化器内有、无气流引入条件下各因素对壳聚糖降解效果的影响。以壳聚糖的特性黏度下降率来反映壳聚糖的降解程度,壳聚糖原料及其降解产物的结构通过傅里叶变换红外光谱进行表征分析。研究结果表明,有气流引入比无气流引入时壳聚糖的降解效果更好,当蠕动泵转速为120 r/min,入口压力为0.4 MPa,温度为70℃,降解时间为50 min,壳聚糖溶液浓度为0.3 g/L,分子量为1000 kDa,pH为4.6时,降解效果最明显,特性黏度下降率为26.72%,同等条件下无气流引入时的特性黏度下降率为23.69%。文章为壳聚糖降解的过程强化研究提供了理论依据。The effects of various factors on the degradation of chitosan with and without airflow are studied.The degradation degree of chitosan is reflected by the characteristic viscosity reduction rate of chitosan.The chitosan raw materials and the structure of their degradation products are characterized and analyzed by Fourier transform infrared spectroscopy.The results show that the degradation effect of chitosan with airflow is better than that without airflow.When the peristaltic pump rotating speed is 120 r/min,the inlet pressure is 0.4 MPa,the temperature is 70℃,the degradation time is 50 min,the concentration of chitosan solution is 0.3 g/L,the molecular weight is 1000 kDa,and the pH is 4.6,the degradation effect is most obvious,and the characteristic viscosity reduction rate is 26.72%,under the same conditions,the the characteristic viscosity reduction rate without airflow introduction is 23.69%.This paper has provided a theoretical basis for strengthening the process of chitosan degradation.

关 键 词：壳聚糖 引入气流 降解 强化 

分 类 号：TS202.3[轻工技术与工程—食品科学]