Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou City, Jiangxi 344000, China.
J Anal Methods Chem. 2012;2012:302059. doi: 10.1155/2012/302059. Epub 2012 Mar 5.
Microwave-assisted extraction of pectin from lemon peels by using ionic liquid as alternative solvent was investigated. The extracted pectin was detected by Fourier transform infrared spectra. The extraction conditions were optimized through the different experiments in conjunction with the response surface methodology. A pectin yield of 24.68 % was obtained under the optimal parameters: the extraction temperature of 88°C, the extraction time of 9.6 min, and a liquid-solid ratio of 22.7 ml · g(-1). The structure of the pretreated lemon peel samples and the samples after microwave-assisted extraction were characterized by a field emission scanning electron microscope.
采用离子液体作为替代溶剂，通过微波辅助从柠檬皮中提取果胶。通过傅里叶变换红外光谱对提取的果胶进行检测。通过不同实验与响应面法相结合，优化了提取条件。在最佳参数下，提取温度为 88°C，提取时间为 9.6 分钟，液固比为 22.7ml·g(-1)，得到了 24.68%的果胶收率。用场发射扫描电子显微镜对预处理后的柠檬皮样品和微波辅助提取后的样品的结构进行了表征。
