文献类型：期刊文献

中文题名：壳聚糖红外干燥特性及动力学模型研究

英文题名：Drying characteristics of chitosan under infrared ray and its kinetics model

作者：欧春艳[1];杨磊[1];李思东[1];章超桦[2];张强[1]

机构：[1]广东海洋大学理学院;[2]广东海洋大学食品科技学院

年份：2007

卷号：23

期号：9

起止页码：91

中文期刊名：农业工程学报

外文期刊名：Transactions of the Chinese Society of Agricultural Engineering

收录：CSTPCD、、EI(收录号：20074510910061)、北大核心2004、Scopus(收录号：2-s2.0-35748943526)、CSCD2011_2012、北大核心、CSCD

基金：广东省科技计划重大项目(2003A2030504)

语种：中文

中文关键词：壳聚糖;甲壳素;红外光;干燥特性;动力学模型

外文关键词：chitosan; chitin;infrared ray; drying characteristics; kinetics model

中文摘要：干燥是壳聚糖制备过程中必不可少的工序,会对能耗和产品理化性能产生重要的影响。为了寻找壳聚糖低耗高效干燥方法,该文在红外干燥条件下,对壳聚糖的干燥特性进行了研究。结果表明,温度因素对壳聚糖的干燥速率影响较大,随着温度的升高,干燥速率增大,而物料的粒度对干燥速率没有显著影响;紫外可见分光光度仪、黏度法和FTIR的研究结果表明,在120℃的干燥条件下,物料的脱乙酰度、分子量及分子结构没有显著变化;对试验数据进行了拟合,建立了薄层干燥动力学模型,结果显示其吻合性较好。

外文摘要：Drying is the essential process in the preparation of chitosan and may have important ettects on energy-consumption and its physical and chemical properties. In order to find low-energy-consumption and high-efficiency drying method, the drying characteris- tics of chitosan under infrared ray were studied. The results show that temperature has more noticeable influences on the drying rate of chitosan than granularity. With the increase of temperature, the drying rate increases. The results by ultraviolet radiation spectrum, viscosity and FTIR spectra show that the degree of deacetylation,molecular weight and molecular structure have few changes at 120℃ drying temperature. The drying kinetics model accurately describing the drying process was derived from the experimental data. The experiment curves agree well with those from the model.