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《Journal of Anhui Agricultural Sciences》 2008-07
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Study on the Rapid Determination of Pectin Content in Ramie by Microwave-assisted Extraction

XIONG Zhong-duo et al (Institute of Enviromental Science,Wuhan University of Science and Engingeering,Wuhan,Hubei 430073)  
The content of pectin in ramie was determined by microwaveassisted extraction.And the influences of such factors as ramie diameter,the material-to-solvent ratio,microwave power,microwave irradiation time and extraction times on the extraction effect were studied.The results showed that microwave-assisted extraction was made on ramie under the conditions as the microwave power of 450 W,ramie diameter of 1.0 cm and the liquid-material ratio of 20 ml/g after ramie was soaked for 20 min.After extracting twice continuously with every irradiation time for 6 min,the determination effects of ramie pectin could achieved the standard of GB5889-86.In the test,the extraction time was shortened from 3 h to 12 min,with the relative standard deviation of 2.23%.The content of pectin in microwave-assisted extract liquid was analyzed by using carbazole colorimetry.
【Fund】: 国家“十一五”支撑计划项目(2006BAC02A00)
【CateGory Index】: S563.1
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