罗登林,许威,徐宝成,刘建学,陈红.菊粉吸湿特性与晶体转变规律研究[J].农业机械学报,2012,43(8):160-163,192.
Luo Denglin,Xu Wei,Xu Baocheng,Liu Jianxue,Chen Hong.Moisture Absorption and Crystal Transformation of Inulin[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(8):160-163,192.
摘要点击次数: 3722
全文下载次数: 1311
菊粉吸湿特性与晶体转变规律研究   [下载全文]
Moisture Absorption and Crystal Transformation of Inulin   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2012.08.029
中文关键词:  菊粉  吸湿  晶体态  无定形态
基金项目:河南省教育厅自然科学研究计划资助项目(2008B550002)和河南科技大学SRTP资助项目(2011230)
作者单位
罗登林 河南科技大学 
许威 河南科技大学 
徐宝成 河南科技大学 
刘建学 河南科技大学 
陈红 河南科技大学 
中文摘要:为了探索菊粉的贮藏环境及其吸湿后晶体结构变化规律,采用静态吸附法考察菊粉在25℃、30℃和45℃条件下的吸湿特性,并利用X-射线衍射仪分析了菊粉晶体转变过程。实验发现菊粉具有良好的吸湿能力,并随着环境相对湿度和温度的提高而增强。当相对湿度为98%时,菊粉在30℃和45℃的吸湿率分别为40.5%和45.0%。菊粉在25℃、30℃和45℃时临界相对湿度分别为75.73%、87.54%和87.78%。X-射线衍射分析发现菊粉无吸湿时为无定形态结构,当吸湿率在6.50%~11.25%时,菊粉开始由无定形态结构向半晶体转变,且在2θ=9.1°时有一个衍射峰,当吸湿率大于11.25%时,晶体态的菊粉含量随吸湿率的增大而增加。
Luo Denglin  Xu Wei  Xu Baocheng  Liu Jianxue  Chen Hong
Henan University of Science and Technology;Henan University of Science and Technology;Henan University of Science and Technology;Henan University of Science and Technology;Henan University of Science and Technology
Key Words:Inulin, Moisture absorption, Crystal structure, Amorphous
Abstract:To explore the storage environment and crystal structure transformation of inulin after water absorption, the hygroscopicity of inulin at 25℃, 30℃ and 45℃ were studied through static adsorption method. The crystal change was explored by using X-ray diffraction. The results showed that the moisture absorption ability of inulin was relative strong, which increased with increasing humidity and temperature. When the relative humidity of environment was 98%, the moisture absorption of inulin was 40.5% and 45.0% at 30℃ and 45℃, respectively. The values of critical relative humidity were 75.73%, 87.54% and 87.78% at 25℃, 30℃ and 45℃, respectively. The X-ray diffraction results illustrated that inulin power was an amorphous structure in dry state. The change from amorphous state to semi-crystalline state would happen during the sorption content ranged from 6.50% to 11.25% with a peak of 2θof 9.1°. The crystal inulin increased with increasing humidity when the moisture absorption was higher than 11.25%. 

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

   下载PDF阅读器