文章摘要
Effect of Hydrogen Peroxide Pretreatment of Eucommia Seed Shell on Extraction Rate of EUG
Received:January 04, 2021  Revised:January 04, 2021
DOI：10.12136/j.issn.1000-890X.2021.07.0508
Key Words: EUG；eucommia seed shell；hydrogen peroxide；pretreatment；extraction rate
Author NameAffiliationE-mail
XU Zhenchuan Shenyang University of Chemical Technology 402387904@qq.com 
FANG Qinghong* Shenyang University of Chemical Technology；Key Laboratory for Rubber Elastomer of Liaoning Province fqh80@126.com 
YANG Feng Shenyang University of Chemical Technology；Key Laboratory for Rubber Elastomer of Liaoning Province  
KANG Hailan Shenyang University of Chemical Technology；Key Laboratory for Rubber Elastomer of Liaoning Province  
LIU Guiping Key Laboratory for Rubber Elastomer of Liaoning Province  
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Abstract:
      Using crushed eucommia seed shell as raw materials，the effect of hydrogen peroxide（H2O2） pretreatment of eucommia seed shell on the extraction rate of eucommia ulmoides gum（EUG） was studied through single factor experiment and orthogonal experiment.The results showed that，the best H2O2 pretreatment conditions of eucommia seed shell were as follows：H2O2 mass fraction　0.02，pH value　7，soaking temperature　80 ℃，soaking time　2 h，material-to-liquid ratio[mass of eucommia seed shell（g） to volume of solvent ethanol（mL）]　1∶14.Under these conditions，the extraction rate of EUG reached 29.79%，which was 17.43% higher than that without pretreatment of eucommia seed shell.Moreover，H2O2 pretreatment of eucommia seed shell had no effect on the molecular chain structure and chemical composition of EUG.The EUG obtained by H2O2 pretreatment of eucommia seed shell was pure and free of other macromolecular impurities，and had a relatively large molecular weight under neutral conditions.
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