Chinese Journal of Applied Chemistry

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Analysis of Petroleum Ether and Ethanol Extractable Species from Rice Straw

GONG Guizhen*, CAO Hong   

  1. (School of Chemical Egineering,Xuzhou Institute of Technology,Xuzhou 221111,China)
  • Received:2013-09-04 Revised:2013-12-06 Published:2014-06-10 Online:2014-06-10

Abstract: Rice straw was extracted with petroleum ether and ethanol by Soxhlet extraction, respectively. Detailed characterizations of the extracts were performed with a gas chromatography/mass spectrometer(GC/MS), Fourier transform infrared(FTIR) spectrometer. The results show that the extraction yields of ethanol and petroleum ether are 8% and 6%, respectively. In total, 40 organic species were identified from extracts, and they can be classified into 7 groups of components:alcohols and phenols(APs), aldehydes, ketones, acids, esters, hydrocarbons(HCs) and organonitrogen compounds(ONs). Esters, HCs and APs are the most abundant compounds in the petroleum ether extactable fraction, the total relative content of which is 91.7%. More HCs, acids, esters, and APs are detected in ethanol extracts, the total relative content is 83.9%. The research is significant in the high value added utilization of straw..

Key words: rice straw, extraction, FTIR, GC/MS analysis

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