摘要
为提高虾壳的综合利用效果,该文以虾壳为原料,将高电压脉冲电场(PEF)技术用于壳聚糖的提取研究。与常规加热法和微波法进行了对比试验,并通过单因素试验和三元二次回归旋转组合设计确定最佳制备工艺。结果表明:该技术与传统加热和微波法方法相比,具有非热、反应速度快,脱乙酰度高的特点。建立了脉冲数、场强、NaOH质量浓度对脱乙酰度影响的数学模型,确定了最佳工艺参数:脉冲数10,电场强度20.48kV/cm,NaOH质量分数48.64%,该条件下脱乙酰度达到最大92.32%。因此,利用高电压脉冲电场技术可以快速制备虾壳中的壳聚糖。
In order to improve the comprehensive utilization of shrimp shells,chitosan of shrimp shell was extracted by the high intensity pulsed electric fields （PEF）.Optimal processing parameters were acquired by the single-factor experiment and quadratic regression rotation design,which were also compared with that of heating method and microwave method.It was found that the PEF method has the features of non-thermal,fast response and high deacetylation compared with traditional methods.The mathematical model of the field strength,pulse number and the concentration of sodium hydroxide on the degree of deacetylation was established,and the optimum condition was that： pulse number 10,field strength 20.48 kV/cm,the concentration of sodium hydroxide 48.64%.Under the optimum condition,the degree of deacetylation reached up to 92.32%.So PEF could be a quick method to prepare chitosan from shrimp shell.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2011年第6期344-348,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
"十一五"国家科技支撑计划资助项目(2007BAD55B06)
长春市科技攻关计划资助项目(06GG139)
长春市科技成果转化百亿增值工程项目(2007CZ14)
吉林省科技厅科技发展计划资助项目(20060216)
关键词
提取
模型
优化
高电压脉冲电场
壳聚糖
虾壳
extraction
models
optimization
high intensity pulsed electric fields （PEF）
chitosan
shrimp shell
